Device to define ice combustion miss and method to this end

FIELD: engines and pumps.

SUBSTANCE: proposed invention relates to devices designed to define the ICE combustion misses and appropriate methods to this end. This invention proposes the device allowing determining the combustion misses. It determines if the difference Nxd360 of rotation fluctuation exceeds, as the difference between rotation fluctuation Nxd at a certain angle CA of the engine crank turn angle and rotation fluctuation Nxd at CA crank turn angle preceding by 360 degrees the preset reference value A1 (stage S150), and if the rotation fluctuation difference Nxd720 and the difference between the rotation fluctuation Nxd at a certain crank turn angle, exceeds the preset reference value B1 (stage S160). The proposed device allows determining the combustion misses provided all the requirements specified in relations Nja2, Nja3 and Nja4 of rotation fluctuation differences proceeding from the rotation fluctuation difference Nxd360 (stage S200) are met as well as those specified in Njb2, Njb3 and Njb4 proceeding from the rotation fluctuation difference Nxd720 (stage S210), when both differences Nxd360 and Nxd720 exceed reference values A1 and B1 (stages S150 and S160).

EFFECT: higher adequacy and accuracy of determination of combustion misses during warming up of catalyst incorporated with exhaust gas control unit with notable ignition delay.

16 cl, 7 dwg

 

The present invention relates to a device for determining misfire for an internal combustion engine and a corresponding method for determining misfire. In particular, the present invention relates to a device for determining misfire, which determines a misfire in a multi-cylinder internal combustion engine, as well as to the appropriate method for determining misfire, which determines the misfire in that the internal combustion engine.

In one of the proposed devices for determining misfire used specific level criterion, which is below the standard level criteria for determining the misfire in the internal combustion engine during warm-up of catalyst included in the control unit exhaust for catalytic conversion of exhaust gases discharged from the internal combustion engine (see, for example, a Newsletter published patent applications in Japan No. 2002-4936). The proposed device detects a misfire in the internal combustion engine during warm-up of catalyst, when the average deviation of the rotational speed of the internal combustion engine exceeds a specific level, which is below the standard level criteria.

According to the first ObjectInstance of the invention a device for determining misfire, determining a misfire in the internal combustion engine with multiple cylinders with variable ignition advance and containing the block determining the angular position of which determines the angular position of a crankshaft of the internal combustion engine; a module for calculating fluctuations of rotation, which sequentially calculates a fluctuation of rotation when the rotation angles of the cranks corresponding to the ignition timing for multiple cylinder internal combustion engine on the basis of specific angular positions of the crankshaft of the internal combustion engine; a module for calculating the difference of the fluctuations of the rotation, which calculates the first difference fluctuations of rotation and the second difference fluctuations of rotation, the first difference of the fluctuations of the rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, calculated at an angle of rotation of the crank prior to each of the respective angles of rotation of the cranks to the specified first angle and the second difference fluctuations of rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, calc is authorized when the angle of rotation of the cranks, prior to each of the respective angles of rotation of the cranks on a preset second angle that is different from the predetermined first angle; and determining module misfire of the engine, which determines the misfire of the internal combustion engine on the basis of the first difference of the fluctuations of rotation and the second difference fluctuations of rotation calculated by the module for calculating the difference fluctuations of rotation, during the period of time from the start of the internal combustion engine to run on the specified condition.

Preferably, the condition is the completion of warming up of the catalyst included in the control unit of the exhaust of the internal combustion engine.

Preferably, the internal combustion engine is driven with a delay of ignition for heating the catalyst included in the control unit of the exhaust of the internal combustion engine.

Preferably, the module for determining the misfire of the engine determines the misfire of the internal combustion engine, when the first difference fluctuations of rotation is not less than the predetermined first value and when the second difference fluctuations of rotation is not less than the predetermined second value which is different from the predetermined first value.

Preferably, the preset first value is less than the predetermined second value.

Preferably, the module for determining the misfire of the engine determines the misfire of the internal combustion engine when a ratio of the first object-difference fluctuations of rotation, which is selected as the first difference of the fluctuations of the rotation component is not less than a preset first value, and the other first-difference fluctuations of rotation different than the first object, the difference between the fluctuations of rotation is in a predetermined first interval ratios identify misfires, and when the ratio of the second object-difference fluctuations of rotation, which is selected as the second difference of the fluctuations of the rotation component is not less than the predetermined second value, and the other difference fluctuations of rotation other than the second object difference fluctuations of rotation is in a predetermined second interval ratios identify misfire that is different from the preset first interval ratios identify misfire.

Preferably, the other of the first difference of the fluctuations of rotation is one of the following differences fluctuations: the third preceding the first difference fluctuations, which is the third before the first object by the difference in the fluctuations of rotation, immediately preceding the first difference of the fluctuations in the rotation immediately before the first object is th difference fluctuations of rotation and directly following the first difference of the fluctuations in the rotation immediately after the first object-difference fluctuations of rotation, and another second difference fluctuations of rotation is one of the following differences fluctuations: the third preceding the second difference fluctuations, which is the third before the second object by the difference in the fluctuations of rotation, immediately preceding the second difference fluctuations of the rotation immediately before the second object by the difference in the fluctuations of rotation and directly followed by the second difference fluctuations of rotation immediately after the second object-difference fluctuations of the rotation.

Preferably, the module for determining the misfire of the engine determines the misfire of the internal combustion engine is provided that the intermediate difference fluctuations of rotation is less than the specified intermediate reference value when the first difference fluctuations of rotation is not less than the predetermined first value and when the second difference fluctuations of rotation is not less than the predetermined second value, the intermediate difference fluctuations of rotation is the difference between the fluctuation of rotation at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks on the phase angle corresponding to the phase of the several cylinders, and the fluctuation of rotation at an angle of rotation of the cranks prior to each of the respective angles of rotation of the crank is in by an amount obtained by multiplying the given phase angle on at least one numerical value selected from among the cylinders, this number minus 1 and this number minus 2.

Preferably, the module for determining the misfire of the engine determines the misfire of the internal combustion engine when all intermediate difference fluctuations of rotation, which is given as the difference of the fluctuations of the rotation angles of rotation of cranks before the multiplication phase angle for the specified number, this number minus 1 and this number minus 2, is less than the specified intermediate reference value.

Preferably, the predetermined first angle is 360 degrees, and set the second angle is 720 degrees.

Preferably, the module for calculating fluctuations of rotation calculates the angular velocity of rotation at each predetermined angle of rotation of a crankshaft of the internal combustion engine, and calculates the fluctuation of rotation as the difference between the angular velocity of rotation in accordance with the installation of ignition for each of the multiple cylinders of the internal combustion engine and the angular velocity of rotation when the previous installation of the ignition timing before the specified angle of the cranks.

Preferably, the module for calculating fluctuations of rotation calculates the angular acceleration of rotation according to the proper installation of ignition for each of the multiple cylinders of the internal combustion engine, as the fluctuation of rotation at an angle of rotation of the cranks corresponding to the ignition.

Preferably, the internal combustion engine mounted on the hybrid vehicle, and operates at the time of actuation, regardless of the operating conditions of the hybrid car.

According to the second object of the present invention created a method for determining misfire, which determines the misfire in the internal combustion engine with multiple cylinders with variable ignition advance, in which: (a) sequentially calculate the fluctuations of the rotation angles of rotation of the cranks corresponding to the ignition timing for multiple cylinder internal combustion engine, based on the identified angular positions of the crankshaft of the internal combustion engine; (b) calculate the first difference fluctuations of rotation and the second difference fluctuations of rotation, the first difference of the fluctuations of the rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks and fluctuation of rotation, calculated at an angle of rotation of the crank prior to each of the respective angles of rotation of the cranks to the specified first angle and the second difference fluctuations of rotation represents p is snasti between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, calculated at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks on a preset second angle that is different from the predetermined first angle; and (C) determine the misfire of the internal combustion engine based on the calculated first difference fluctuations of rotation and the calculated second difference fluctuations of rotation during the time period from the start of the internal combustion engine to run on the specified condition.

Preferably, step (C) determine the misfire of the internal combustion engine during the time period from the start of the internal combustion engine prior to the completion of warming up of the catalyst included in the control unit of the exhaust of the internal combustion engine.

Preferably, step (C) determine the misfire of the internal combustion engine, when the first difference fluctuations of rotation is not less than the predetermined first value and when the second difference fluctuations of rotation is not less than the predetermined second value which is different from the predetermined first value.

Preferably, determine the misfire of the internal combustion engine, which is actuated when run from the delay zagig is ment for heating the catalyst, included in the control unit of the exhaust of the internal combustion engine.

Thus, the device for determining misfire, which was the prototype uses a lower level criterion during warm-up of catalyst. Therefore, it may be a failure in the determination of the misfire. In particular, if the internal combustion engine mounted on a hybrid vehicle with electric drive, it can function with the installation later ignition to accelerate warm-up of catalyst. In this case, the internal combustion engine has a more slow combustion. A simple reduction criterion may consequently lead to inadequate or inaccurate determination of the misfire in the internal combustion engine.

Device for determining the misfire and the appropriate method of determining misfire according to the invention in accordance with this aimed at ensuring the adequate determination of misfire in the internal combustion engine before the completion of warm-up. Device for determining the misfire and the appropriate method of determining misfire according to the invention is also aimed at providing a precise definition of misfire in the engine DNAs is Rennie combustion even during operation of the internal combustion engine for heating the catalyst, included in the control unit exhaust for catalytic conversion of exhaust gases discharged from the internal combustion engine.

To achieve at least part of the above and other related objectives, the device for determining misfire and a corresponding method of detecting misfire in accordance with this invention have a composition, which was described earlier.

This invention is directed to a device for determining misfire, which determines a misfire in a multi-cylinder internal combustion engine with the possibility of changing the ignition timing. Such a device for determining misfire includes: unit determining the angular position of which determines the angular position of a crankshaft of the internal combustion engine; a module for calculating fluctuations of rotation, which sequentially calculates a fluctuation of rotation when the rotation angles of the cranks corresponding to the ignition timing for multiple cylinder internal combustion engine on the basis of specific angular positions of the crankshaft of the internal combustion engine; a module for calculating the difference of the fluctuations of the rotation, which sequentially calculates a first difference between the fluctuations of rotation and the second RA is the surface of the fluctuations of rotation, the first difference fluctuations of rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, calculated at an angle of rotation of the crank prior to each of the respective angles of rotation of the cranks to the specified first angle and the second difference fluctuations of rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, calculated at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks on a preset second angle that is different from the predetermined first angle; and determining module passes ignition engine, which determines the misfire of the internal combustion engine on the basis of the first difference of the fluctuations of rotation and the second difference fluctuations of rotation calculated by the specified module for calculating the difference fluctuations of rotation, during the period of time from the start of the internal combustion engine to run on the specified condition.

A device for determining misfire according to the invention sequentially calculates the fluctuations of the rotation angles of rotation of the cranks, the corresponding R is Opredelenie ignition for multiple cylinder internal combustion engine, on the basis of the angular positions of the crankshaft of the internal combustion engine. A device for determining misfire then calculates the first difference fluctuations of rotation and the second difference fluctuations of rotation. The first difference fluctuations of rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, calculated at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks to set the first corner. The second difference fluctuations of rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, calculated at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks on a preset second angle that is different from the predetermined first angle. A device for determining misfire determines the misfire of the internal combustion engine based on the calculated first difference fluctuations of rotation and the calculated second difference fluctuations of rotation during the time period from the start of the internal combustion engine to perform the specified conditions. Namely, the device fordetermination misfire uses the difference fluctuations of rotation, defined for fluctuations in the rotation at different preceding the angles of rotation of the cranks. Such a device provides an adequate definition of a misfire of the internal combustion engine during the time period from the start of the internal combustion engine to perform the specified conditions. "Specified condition" may be the completion of warming up of the catalyst included in the control unit of the exhaust of the internal combustion engine. This device provides adequate and accurate determination of the misfire in the internal combustion engine even during operation of the internal combustion engine for heating the catalyst included in the control unit of the exhaust. "The internal combustion engine may operate at startup, install late ignition for heating the catalyst included in the control unit of the exhaust of the internal combustion engine. This device provides adequate and accurate determination of the misfire in the internal combustion engine even during operation of the internal combustion engine with setting a late ignition for heating the catalyst included in the control unit exhaust.

In the device for determining misfire according to the invention, for example, the module for the op is adelene misfire of the engine can determine the misfire of the internal combustion engine, when the first difference fluctuations of rotation is not less than the predetermined first value and when the second difference fluctuations of rotation is not less than the predetermined second value which is different from the predetermined first value. In this case, a given first value may be less than the predetermined second value.

In the device for determining misfire according to the invention, which determines the misfire of the internal combustion engine, when the first difference fluctuations of rotation is not less than the predetermined first value and when the second difference fluctuations of rotation is not less than the predetermined second value, the module for determining the misfire of the engine can determine the misfire of the internal combustion engine when a ratio of the first object-difference fluctuations of rotation, which is selected as the first difference of the fluctuations of the rotation component is not less than a preset first value, and the other first-difference fluctuations of rotation different than the first object, the difference between the fluctuations of rotation is in a predetermined first interval ratios identify gaps ignition, and when the ratio of the second object-difference fluctuations of rotation, which is selected as the second difference of the fluctuations of the rotation component is not less than the predetermined second value, and the other difference fluctuations of rotation, the other is eating the second object difference fluctuations of rotation, is in a predetermined second interval ratios identify misfire that is different from the preset first interval ratios identify misfire. In this case another first difference fluctuations of rotation can be one of the following differences fluctuations: the third preceding the first difference fluctuations before the first object by the difference in the fluctuations of rotation, immediately preceding the first difference of the fluctuations in the rotation immediately before the first object by the difference in the fluctuations of rotation and directly following the first difference of the fluctuations in the rotation immediately after the first object-difference fluctuations of rotation. And another second difference fluctuations of rotation can be one of the following differences fluctuations: the third preceding the second difference fluctuations before the second object by the difference in the fluctuations of rotation, immediately preceding the second difference fluctuations of the rotation immediately before the second object by the difference in the fluctuations of rotation and directly followed by the second difference fluctuations of rotation immediately after the second object-difference fluctuations of rotation. This device provides adequate and accurate determination of the misfire in the internal combustion engine.

In one preferred the equipment of embodiments of the device for determining the misfire according to the invention, which determines the misfire of the internal combustion engine, when the first difference fluctuations of rotation is not less than the predetermined first value and when the second difference fluctuations of rotation is not less than the predetermined second value, the module for determining the misfire of the engine can determine the misfire of the internal combustion engine is provided that the intermediate difference fluctuations of rotation is less than the specified intermediate reference value when the first difference fluctuations of rotation is not less than the predetermined first value and when the second difference fluctuations of rotation is not less than the predetermined second value. Intermediate the difference fluctuations of rotation is the difference between the fluctuation of rotation at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks on the phase angle corresponding to the phase of the several cylinders, and the fluctuation of rotation at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks on the value obtained by multiplying the given phase angle on at least one numerical value selected from among the cylinders, this number minus 1 and this number minus 2. This device provides an adequate definition of a misfire in the internal combustion engine. In this case, the mod is eh to determine the misfire of the engine can also determine the misfire of the internal combustion engine in the case when all intermediate difference fluctuations of rotation, which is given as the difference of the fluctuations of the rotation angles of rotation of cranks before the multiplication phase angle for the specified number, this number minus 1 and this number minus 2, is less than the specified intermediate benchmark. This device provides a more adequate definition of a misfire in the internal combustion engine.

In the device for determining misfire according to the invention specified first angle and a preset second angle can be 360 degrees and 720 degrees, respectively. However, the first angle and the second angle are not restricted to these values and may be set arbitrarily.

In one of the preferred embodiments of the device for determining the misfire according to the invention, the module for calculating fluctuations of rotation can calculate the angular velocity of rotation at each predetermined angle of rotation of a crankshaft of the internal combustion engine and to calculate the fluctuation of rotation as the difference between the angular velocity of rotation in accordance with the installation of ignition for each of the multiple cylinders of the internal combustion engine and the angular velocity of rotation when the previous installation of ignition before the specified angle of the cranks. In addition, the module for calc is of fluctuations of rotation can be calculated angular acceleration of rotation, corresponding to the installation of ignition for each of the multiple cylinders of the internal combustion engine, as the fluctuation of rotation at an angle of arrangement of the cranks corresponding to the ignition.

A device for determining misfire according to the invention can be used to determine the misfire of the internal combustion engine mounted on the hybrid vehicle, and operates at the time of actuation, regardless of the operating conditions of the hybrid car.

In the method for determining misfire according to the invention sequentially count of fluctuations of the rotation angles of rotation of the cranks corresponding to the ignition timing for multiple cylinder internal combustion engine, based on the angular positions of the crankshaft of the internal combustion engine. In the method for determining misfire then calculate the first difference fluctuations of rotation and the second difference fluctuations of rotation. The first difference fluctuations of rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, calculated at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks is and set the first corner. The second difference fluctuations of rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, calculated at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks on a preset second angle that is different from the predetermined first angle. The method for determining the misfire determines the misfire of the internal combustion engine based on the calculated first difference fluctuations of rotation and the calculated second difference fluctuations of rotation during the time period from the start of the internal combustion engine to perform the specified conditions. Namely, the method for determining the misfire uses the difference fluctuations of rotation defined for fluctuations in the rotation at different preceding the angles of rotation of the cranks. This method provides an adequate definition of a misfire of the internal combustion engine during the time period from the start of the internal combustion engine to perform the specified conditions. "Specified condition" may be the completion of warming up of the catalyst included in the control unit of the exhaust of the internal combustion engine. This method provides adequate and accurate definition of what rouskov ignition in the internal combustion engine even during operation of the internal combustion engine for heating the catalyst, included in the control unit of the exhaust. "The internal combustion engine may operate at startup, install late ignition for heating the catalyst included in the control unit of the exhaust of the internal combustion engine. This device provides adequate and accurate determination of the misfire in the internal combustion engine even during operation of the internal combustion engine with setting a late ignition for heating the catalyst included in the control unit exhaust.

In one of the preferred embodiments of the method for determining misfire according to the invention in step (C) determine the misfire of the internal combustion engine during the time period from the start of the internal combustion engine prior to the completion of warming up of the catalyst included in the control unit of the exhaust of the internal combustion engine. In another preferred embodiment, the method for determining misfire according to the invention in step (C) determine the misfire of the internal combustion engine, when the first difference fluctuations of rotation is not less than the predetermined first value and when the second difference fluctuations of rotation is not less than the predetermined second value which is different is raised from the predetermined first value. Set the first value may be less than the predetermined second value.

Hereinafter the present invention will be described in more detail with reference to the accompanying drawings, on which:

Figure 1 schematically illustrates the configuration of a hybrid vehicle 20 equipped with a device for determining misfire for an internal combustion engine according to one embodiments of the invention;

Figure 2 schematically illustrates the structure of the electronic unit 24 controls the engine, functioning as a device for determining the misfire and the engine 22 is driven and controlled data electronic control unit 24 controlling the motor;

3 is a flowchart illustrating a procedure for detecting misfire of the engine during warm-up, perform the electronic unit 24 motor control in this embodiment;

Figure 4 is a graph showing changes with time difference fluctuations rotation Nxd360 in the case of a misfire;

Figure 5 is a graph showing changes with time difference fluctuations rotation Nxd720 in the case of a misfire;

6 is a flowchart illustrating a procedure for detecting misfire of the engine during warm-up, perform the electronic unit 24 from the management engine in another embodiment of the invention; and

Fig.7 is a graph showing changes with time fluctuations of rotation Nxd(n) in the case of a misfire.

Some embodiments of the present invention are described below as preferred embodiments with reference to the accompanying drawings. Figure 1 schematically illustrates the configuration of a hybrid vehicle 20 equipped with a device for determining misfire for an internal combustion engine according to one embodiments of the invention. Figure 2 schematically illustrates the structure of the electronic unit 24 controls the engine, functioning as a device for determining the misfire and the engine 22 is driven and controlled data electronic control unit 24 controls the engine. As shown in figure 1, the hybrid vehicle 20 according to this variant implementation includes the engine 22, which is driven and controlled by the electronic unit 24 controls the engine (shown in the drawing as an electronic control unit (ECU) of the engine), the planetary gear mechanism 30, which has led, connected with a crankshaft 26 or an output shaft of the engine 22 and a crown gear connected to the drive shaft, which is connected with the driving axle 69A and 69b, the motor MG1, which is connected with lachney gear of the planetary gear mechanism 30 and is driven and controlled by the electronic control unit 40 motor shown in the drawing as an electronic control unit (ECU) of the motor) through an inverter 41, a motor MG2 that is connected with a drive shaft connected with the driving axle 69A and 69b, and is driven and controlled by the electronic unit 40 controls the motor via the inverter 42, the battery 50, which is configured to input and output electric power from the electric motors MG1 and MG2 and to them via the inverters 41 and 42, and the electronic system 70 controls a hybrid vehicle, which generally controls the operation of the hybrid vehicle 20. The electronic system 70 controls the hybrid vehicle constructed as a microprocessor including a Central processing unit (CPU) 72, a ROM 74 in which is recorded a program for processing data, a RAM 76 that temporarily stores data, input ports and output (not shown) and a communication port (not shown). The electronic system 70 controls a hybrid vehicle receives through its input port data about the position of the shift mechanism of the SP or the position of the lever 81 gear at the moment from the sensor 82, the position of the gear shift, the opening degree of the throttle Acc or on pressing degree driver pedal 83 accelerator sensor 84, the position of the accelerator pedal, the position of the brake pedal BP or pressing degree of the driver's brake pedal 85 from the sensor 86 to the provisions of the Oia brake pedal and the speed V of the vehicle from sensor 88 vehicle speed. The electronic system 70 controls a hybrid car connected with the electronic unit 24 controls the motor and the electronic control unit 40 of the motor control through the communication port for transmission of various control signals and data in the electronic unit 24 controls the engine and the electronic unit 40 motor control and from these blocks.

The engine 22 is an internal combustion engine with a single-row arrangement of six cylinders, which consume a hydrocarbon fuel, such as gasoline or diesel fuel, for power distribution. As shown in figure 2, the air cleaned by the air filter 122 and received via a throttle valve 124, is mixed with finely sprayed fuel injected through the valve 126 for the injection of fuel, with the formation of the fuel-air mixture. The air-fuel mixture introduced into the combustion chamber through the intake valve 128. Entered the air-fuel mixture is ignited by the spark generated by the spark plug 130 for combustion instant way. The reciprocating movement of the piston 132 under the influence of the energy of combustion is converted into rotational motion of the crankshaft 26. Exhaust gases from the engine 22 through the control unit exhaust 134 (filled three-component catalyst for transformation is toxic components, contained in the exhaust gases, namely carbon monoxide (CO), hydrocarbons (HC) and oxides of nitrogen (NOx), into harmless components, and then released to the outside atmosphere. In the engine 22 according to this variant implementation of the pistons 122 corresponding to six cylinders attached to the crankshaft 26 thus, to move the setting of the ignition timing in the respective cylinders in accordance with the rotation angle SA of cranks at 120 degrees.

The electronic unit 24 controls the motor that controls the engine 22, is constructed as a microprocessor including a Central processing unit (CPU) 24, a ROM 24b, in which is recorded a program for processing data, the RAM 24C, which temporarily stores data, a flash memory (not shown), input ports and output (not shown) and a communication port (not shown). The electronic unit 24 controls the engine receives through its input port signals from various sensors that measure and determine the conditions of operation of the engine 22. The signals in the electronic unit 24 controlling the motor includes a rotation angle SA of the cranks from the sensor 140 of the angle of rotation of the cranks, defined as the angle of rotation of the crankshaft 26, the temperature Tw of cooling water from the sensor 142 water temperature, measured as the temperature of cooling water in motion is the motor 22, the position of the Cam sensor 144 position of the Cam, defined as the angular position of the shaft, the opening and closing of the intake valve 128 and an exhaust valve for inlet and outlet gas in the combustion chamber and from it, the throttle valve from the sensor 146 throttle valve, defined as the degree of opening or the throttle valve 124, the flow of intake air Ga from the sensor 148 vacuum, measured as the load of the engine 22, the ratio AF quantity of air to the fuel quantity from the sensor a the ratio of air to fuel, posted to the control unit exhaust 134 in the direction of flow of the stream and the concentration of the oxygen sensor 135b oxygen, placed after the control unit exhaust 134 in the direction of flow of the stream. The sensor 40 of the angle of rotation of the crank is a magnetoresistive rotation sensor having a magnetoresistive element (MRE), which are located at the positions facing to the magnetic rotor (not shown)mounted on the crankshaft 26. The sensor 140 of the angle of rotation of the crank produces a pulse each time a predetermined angular position (for example, when the angle SA of rotation of the crank every 10 degrees). In this embodiment, the electronic unit 24 of the control motor is elem uses the pulses from the output of the sensor 140 of the angle of rotation of the cranks to determine the angle SA of rotation of the cranks and calculation speed N of rotation of the engine 22. From the electronic unit 24 controls the engine coming through the port output various control signals and drive signals for driving the engine 22 and control them, for example, drive signals to the valve 126 for fuel injection, drive signals to the motor 136 throttle valve for adjusting the position of the throttle valve 124, control signals to the coil 138 ignition, combined with the igniter, and control signals to the mechanism 150 regulate the timing to change the moments of opening and closing of the inlet valve 128. As described above, the electronic unit 24 motor control connected to the electronic system 70 controls a hybrid vehicle. The electronic unit 24 controlling the motor receives control signals from the electronic system 70 controls the hybrid vehicle actuation and control of the engine 22 while output data relating to the operating conditions of the engine 22, and feed them into the electronic system 70 controls a hybrid vehicle in accordance with the requirements.

The description regards the operations of the hybrid vehicle 20 according to a variant implementation, with the above configuration, mainly a series of operations for determining the misfire of the engine 22 electronic control unit 24 controls the engine is in warm-up time of the catalyst in the unit control exhaust 134 after starting the engine 22.

3 is a flowchart illustrating a procedure for detecting misfire of the engine during warm-up, perform electronic control unit 24 controls the engine. Hybrid vehicle 20 according to this variant has the capability of movement in the drive mode from the motor, in which the output power comes from the electric motor MG2 in accordance with the state of charge (SOC) of the battery 50 and the power required from the actuator. The engine 22, respectively, is driven with a significant delay ignition immediately after starting to accelerate warm-up of catalyst included in block 134 control exhaust.

During the execution of procedures for determining the misfire of the engine during warm-up, the CPU 24A of the electronic unit 24 controls the engine first receives the data required for determining the misfire of the engine, for example, the angle SA of rotation of the cranks from the sensor 140 of the rotation angle of the crank (step S100), and calculates the speed N of the crankshaft 26 at each corner of SA of rotation of the cranks 60 degrees on the basis of the input angle SA of rotation of the cranks (step S110). The speed N of rotation at every angle SA of rotation of the cranks 60 degrees calculated from the interval between pulse at a certain angle CA at the Orot of cranks and the pulse at the position of 10 degrees front angle SA of rotation of the cranks. The CPU 24A then calculates the fluctuation Nxd rotation at an angle SA of rotation of the cranks at every 120 degrees in accordance with the setting of the ignition timing for each of the six cylinders of the engine 22 as the difference between the speed N of rotation at an angle SA of rotation of the cranks at every 60 degrees (step S120). The CPU 24A then calculates the difference between the calculated fluctuation Nxd rotation at a certain angle SA of rotation of the cranks and the calculated fluctuation Nxd rotation when the previous 360 degrees angle SA of rotation of the cranks as the difference fluctuations rotation Nxd360 (step S130) and the difference between the calculated fluctuation Nxd rotation at a certain angle SA of rotation of the cranks and the calculated fluctuation Nxd rotation during the previous 720 degrees angle SA of rotation of the cranks as the difference fluctuations Nxd720 rotation (step 3140). Fluctuation Nxd rotation count at an angle SA of rotation of the cranks every 120 degrees. Fluctuation Nxd rotation when the previous 360 degrees angle SA of rotation of the cranks is respectively fluctuation of rotation of the third preceding angle SA of rotation of the cranks, and the fluctuation Nxd rotation during the previous 720 degrees angle SA of rotation of the cranks is a fluctuation of rotation when the sixth preceding angle SA of rotation of the cranks On the block diagram, figure 3 data fluctuations of rotation expressed as Nxd(n), Nxd(n-3), Nxd(n-6).

The calculated difference Nxd360 fluctuations of rotation is compared with a preset first reference value A1 for determining misfire for 360 degrees (step S150), while the calculated difference Nxd720 fluctuations of rotation is compared with a preset first reference value V1 for determining misfire for 720 degrees (step S160). The first reference value A1 for determining misfire for 360 degrees and the first reference value V1 for determining misfire for 720 degrees is determined experimentally or otherwise so that they are less differences Nxd360 and Nxd720 fluctuations of rotation corresponding to the setting of the ignition timing of the cylinder to pass ignition, however, more differences Nxd360 and Nxd720 fluctuations of rotation corresponding to the setting of the ignition timing of the cylinder with the ignition in the event of a misfire during operation of the engine 22 with a significant delay in the ignition to warm up the catalyst included in the unit 134 controls the release of exhaust gases. In the engine 22 according to this variant, the first reference value A1 misfire for 360 degree slightly smaller than the first reference value V1 misfire for 720 degrees. If the calculated difference Nxd360 fluctuations of rotation does not exceed a predetermined first reference value A1 for the determining the misfire for 360 degrees or if the calculated difference Nxd720 fluctuations of rotation does not exceed a predetermined first reference value V1 for determining misfire for 720 degrees, then, the CPU 24A identifies it as the absence of misfire in and out of the procedures for determining the misfire of the engine during warm-up.

If the calculated difference Nxd360 fluctuations of rotation exceeds the first reference value A1 for determining misfire for 360 degrees and if the calculated difference Nxd720 fluctuations of rotation exceeds the first reference value V1 for determining misfire for 720 degrees, the cylinder having an excessive difference Nxd360 and Nxd720 fluctuations of rotation is defined as a cylinder misfire, having a third sequence number of the ignition (step S170). The CPU 24A then calculates the ratio Nja2, Nja3, and Nja4 difference fluctuations of rotation (step S180). The ratio Nja2 difference fluctuations of rotation is obtained by dividing the third preceding difference Nxd360(0) fluctuations of rotation for the cylinder, which is the third in front of the cylinder with the misfire, the difference Nxd360(3) fluctuations of rotation for the cylinder with the misfire. The ratio Nja3 difference fluctuations of rotation is the quotient of the directly previous difference Nxd360(2) fluctuations of rotation for the cylinder, located directly in front of the cylinder with the misfire, the difference Nxd360(3) fluctuations of rotation for the cylinder with the PCC is a bench ignition. The ratio Nja4 difference fluctuations of rotation is the quotient of the following difference Nxd360(4) fluctuations of rotation for the cylinder that is located immediately after the cylinder with the misfire, the difference Nxd360(3) fluctuations of rotation for the cylinder with the misfire. The CPU 24 also calculates the ratio Njb2, Njb3, and Njb4 difference fluctuations of rotation (step S190). The ratio Njb2 difference fluctuations of rotation is obtained by dividing the third preceding difference Nxd720(0) fluctuations of rotation for the cylinder, which is the third in front of the cylinder with the misfire, the difference Nxd720(3) fluctuations of rotation for the cylinder with the misfire. The ratio Njb3 difference fluctuations of rotation is the quotient of the directly previous difference Nxd720(2) fluctuations of rotation for the cylinder, located directly in front of the cylinder with the misfire, the difference Nxd720(3) fluctuations of rotation for the cylinder with the misfire. The ratio Njb4 difference fluctuations of rotation is the quotient of the following difference Nxd720(4) fluctuations of rotation for the cylinder that is located immediately after the cylinder with the misfire, the difference Nxd720(3) fluctuations of rotation for the cylinder with the misfire.

The CPU 24A sequentially determines whether the calculated ratio Nja2 the differential the fluctuations of rotation between predetermined second reference values A21 and A22 for determining misfire for 360 degrees, if the calculated ratio Nja3 difference fluctuations rotation between predetermined third reference values A31 and A32 to determine misfire for 360 degrees and is calculated ratio Nja4 difference fluctuations rotation between predetermined fourth reference value A41 and a to determine misfire for 360 degrees (step S200). The CPU 24A also sequentially determines whether the calculated ratio Njb2 difference fluctuations rotation between predetermined second reference values of B21 and B22 for determining misfire for 720 degrees, if the calculated ratio Njb3 difference fluctuations rotation between predetermined third reference value V and V32 for determining misfire for 720 degrees and is calculated ratio Njb4 difference fluctuations rotation between predetermined fourth reference values B41 content and V to determine misfire for 720 degrees (step S210). Set second reference values A21 and A22 for determining misfire for 360 degrees, preset third reference values A31 and A32 to determine misfire for 360 degrees and set the fourth reference value A41 and a to identify gaps ignition is for 360 degree set of experimental or otherwise, so they were respectively less than and greater ratio Nja2 differences fluctuations in rotation, were respectively less than and greater ratio Nja3 differences fluctuations in rotation and were respectively less than and greater ratio Nja4 difference fluctuations of rotation in the case of a misfire during operation of the engine 22 with a significant delay in the ignition to warm up the catalyst included in the unit 134 controls the release of exhaust gases. Set second reference value B21 and B22 for determining misfire for 720 degrees, preset third reference value V and V32 for determining misfire for 720 degrees and set the fourth reference values B41 content and V to determine misfire for 720 degrees set in experimental or otherwise, that they were respectively less than and greater ratio Njb2 differences fluctuations in rotation, were respectively less than and greater ratio Njb3 differences fluctuations in rotation and were respectively less than and greater ratio Njb4 difference fluctuations of rotation in the case of a misfire during operation of the engine 22 with a significant delay in the ignition to warm up catalyst included in block 134 control the release of exhaust gases. If the ratio Nja2 difference fluctuations of rotation is between the second set the reference values A21 and A22 for determining misfire for 360 degrees, the ratio Nja3 difference fluctuations of rotation is between the predetermined third reference values A31 and A32 to determine misfire for 360 degrees, and the ratio Nja4 difference fluctuations of rotation is between the predetermined fourth reference value A41 and a to determine misfire for 360 degrees, and if the ratio Njb2 difference fluctuations of rotation is between the predetermined second reference values of B21 and B22 for determining misfire for 720 degrees, the ratio of the Njb3 difference fluctuations of rotation is between the predetermined third reference value V and V32 for determining misfire for 720 degrees and the ratio Njb4 difference fluctuations of rotation is between the predetermined fourth reference values B41 content and V to determine misfire for 720 degrees, the CPU 24A outputs a signal about the presence of misfire (step S220), and exits the procedure to determine the misfire of the engine during warm-up. If any of the ratios Nja2, Nja3, and Nja4 difference fluctuations of rotation is outside the interval between the predetermined second reference values A21 and A22 for determining misfire for 360 degrees, outside the interval between the predetermined third reference value is A31 and A32 to determine misfire for 360 degrees or outside the interval between the predetermined fourth reference value A41 and a to determine misfire for 360 degrees, or if any of the ratios Njb2, Njb3, and Njb4 difference fluctuations of rotation is outside the interval between the predetermined second reference values of B21 and B22 for determining misfire for 720 degrees, outside the interval between the predetermined third reference value V and V32 for determining misfire for 720 degrees or outside the interval between the predetermined fourth reference values B41 content and V to determine misfire for 720 degrees, the CPU 24A identifies it as the absence of misfire in and out of the procedures for determining the misfire of the engine during warm-up.

Figure 4 is a graph showing changes with time of the difference Nxd360 fluctuations of rotation in the case of a misfire. Figure 5 is a graph showing changes with time of the difference Nxd720 fluctuations of rotation in the case of a misfire. Relatively slow combustion when the engine 22 with a significant delay in the ignition to warm up the catalyst included in the unit 134 controls the release of exhaust gases causes a change in the fluctuations of rotation and changing the profile difference fluctuations of rotation. May be, respectively, a small difference between the difference Nxd360 fluctuations of rotation and the difference Nxd720 fluctuations of rotation. However, regardless of small differences IU the control difference Nxd360 fluctuations of rotation and the difference Nxd720 fluctuations rotation difference fluctuations of rotation of the cylinder with the misfire much more of a difference fluctuations of rotation of the cylinder with the presence of ignition. As shown in the drawings, in the case of a misfire the difference Nxd360 fluctuations rotation in only one specific cylinder in one cycle clearly exceeds the first reference value A1 for determining misfire for 360 degrees, while the difference Nxd720 fluctuations of rotation in this particular cylinder is clearly exceeds the first reference value V1 for determining misfire for 720 degrees. To eliminate the possibility of incorrect identification, the procedure according to this variant implementation determines the misfire of the engine based on the ratios Nja2, Nja3, and Nja4 difference fluctuations of rotation for the difference Nxd360 fluctuations of the spins and parities Njb2, Njb3, and Njb4 difference fluctuations of rotation for the difference Nxd720 fluctuations of rotation, in addition to the comparison results, where the difference Nxd360 fluctuations of rotation in a cylinder exceeds the first reference value A1 for determining misfire for 360 degrees, and the difference Nxd720 fluctuations of rotation in a cylinder exceeds the first reference value V1 for determining misfire for 720 degrees. Method of detecting misfire of the engine during the warm-up according to this variant implementation provides adequate and accurate determination of the misfire of the engine during which regrev catalyst unit 134 controls the release of exhaust gases with a significant delay in the ignition in the engine 22.

As described above, the device for determining the misfire in accordance with this variant implementation, mounted on the hybrid vehicle 20 determines the misfire of the engine based on the satisfaction of specified conditions in relation to the difference Nxd360 fluctuations of rotation, calculated as the difference in comparison with the fluctuation Nxd rotation when the previous 360 degrees angle SA of rotation of the cranks, and the ratio of the difference between Nxd720 fluctuations of rotation, calculated as the difference in comparison with the fluctuation Nxd rotation during the previous 720 degrees angle SA of rotation of the cranks. This device provides a more adequate and accurate determination of the misfire of the engine during warm-up of catalyst included in block 134 control exhaust, with a significant delay in the ignition in the engine 22 in comparison with the definition of misfire of the engine based only difference Nxd360 fluctuations of rotation or with the definition of misfire of the engine based only difference Nxd.720 fluctuations of rotation. A device for determining misfire under this option, the implementation determines the misfire of the engine based on the ratios Nja2, Nja3, and Nja4 difference fluctuations of rotation for the difference fluctuations rotation Nxd.360 and ratios Njb2, Njb3, and Njb4 differences FL is choice rotation for the difference Nxd.720 fluctuations of rotation, in addition to the comparison results, where the difference Nxd360 fluctuations of rotation in a cylinder exceeds the first reference value A1 for determining misfire for 360 degrees, and the difference Nxd720 fluctuations of rotation in a cylinder exceeds the first reference value V1 for determining misfire for 720 degrees. This system helps to improve the adequacy and accuracy of misfire of the engine.

A device for determining misfire under this variant implementation, mounted on the hybrid vehicle 20 determines the misfire of the engine based on a ratio Nja2, Nja3, and Nja4 difference fluctuations of rotation for the difference Nxd360 fluctuations of the spins and parities Njb2, Njb3, and Njb4 difference fluctuations of rotation for the difference Nxd720 fluctuations of rotation, in addition to the comparison results, where the difference Nxd360 fluctuations of rotation in a cylinder exceeds the first reference value A1 for determining misfire for 360 degrees, and the difference Nxd720 fluctuations of rotation in a cylinder exceeds the first reference value V1 for determining misfire for 720 degrees. One possible modification may determine the misfire of the engine based on the ratios Nja2, Nja3, and Nja4 differences FL is choice rotation for the difference Nxd360 fluctuations of the spins and parities Njb2, Njb3 and Njb4 difference fluctuations of rotation for the difference Nxd720 fluctuations of rotation, in addition to the comparison results, where the difference Nxd360 fluctuations of rotation in a cylinder exceeds the first reference value A1 for determining misfire for 360 degrees, and the difference Nxd720 fluctuations of rotation in a cylinder exceeds the first reference value V1 for determining misfire for 720 degrees. Another possible modification may determine the misfire of the engine based on these comparison results, where the difference Nxd360 fluctuations of rotation in a cylinder exceeds the first reference value A1 for determining misfire for 360 degrees, and the difference Nxd720 fluctuations of rotation in a cylinder exceeds the first reference value V1 for determining misfire for 720 degrees. Mandatory are not all of the correlations Nja2, Nja3, and Nja4 difference fluctuations of rotation for the difference Nxd360 fluctuations of rotation, and can be used only a part of such ratios Nja2, Nja3, and Nja4 differences fluctuations in rotation as part of the basis for determining the misfire of the engine. Similarly, mandatory are not all of the correlations Njb2, Njb3, and Njb4 difference fluctuations of rotation for the difference Nxd720 fluctuations of rotation, and can be is used only part of such ratios Njb2, Njb3 and Njb4 differences fluctuations in rotation as part of the basis for determining the misfire of the engine. As part of the basis for determining the misfire of the engine ratio Nja2, Nja3, and Nja4 difference fluctuations of rotation for the difference Nxd360 fluctuations of rotation and the ratio Njb2, Njb3, and Njb4 difference fluctuations of rotation for the difference Nxd720 fluctuations of rotation can be replaced with other ratios of the differences between the fluctuations of rotation for the difference Nxd360 fluctuations rotation and other ratios of the differences between the fluctuations of rotation for the difference Nxd720 fluctuations of the rotation.

A device for determining misfire under this variant implementation, mounted on the hybrid vehicle 20 determines the misfire of the engine during warm-up of catalyst in block 134 control exhaust with a significant delay in the ignition in the engine 22 based on the satisfaction of specified conditions in relation to the difference Nxd360 fluctuations of rotation, calculated as the difference in comparison with the fluctuation Nxd rotation when the previous 360 degrees angle SA of rotation of the cranks, and the ratio of the difference between Nxd720 fluctuations of rotation, calculated as the difference in comparison with the fluctuation Nxd rotation during the previous 720 degrees angle SA of the cranks. However, the difference Nxd360 and Nxd720 fluctuations of the treatment are not restrictive. Any two different-difference fluctuations of rotation, calculated as the difference compared with the fluctuation Nxd rotation in all different previous angles CA rotate the cranks can be used to determine the misfire of the engine 22 during the warm-up catalytic Converter.

A device for determining misfire under this variant implementation, mounted on the hybrid vehicle 20, calculates the fluctuation Nxd rotation at an angle SA of rotation of the cranks at every 120 degrees in accordance with the setting of the ignition timing for each of the six cylinders of the engine 22 as the difference between the speed N of rotation at an angle SA of rotation of the cranks at every 60 degrees. Fluctuation Nxd rotation can be alternatively computed as the difference between the speed N of rotation at an angle SA of rotation of the cranks on each different angle, different from the above. Fluctuation Nxd rotation can be otherwise defined as angular acceleration of rotation at an angle SA of rotation of the cranks at every 120 degrees in accordance with the setting of the ignition timing for each of the six cylinders of the engine 22.

A device for determining misfire under this variant implementation, mounted on the hybrid vehicle 20 determines a misfire in the engine 22 internal CDF the project with in-line arrangement of six cylinders. The method according to this variant implementation is applicable to the determination of misfire in the engine having any number of cylinders.

Another device for determining the misfire mounted on the hybrid vehicle 20B, described below as a second variant implementation of the present invention.

Hardware-in hybrid vehicle 20B according to the second variant implementation is the same as in the hybrid vehicle 20 according to the first variant implementation, shown in figures 1 and 2 and therefore will not be described here separately. Hybrid vehicle 20B according to the second variant implementation performs a procedure for detecting misfire of the engine during warm-up, presented in the form of the block diagram of figure 6, instead of the procedures for determining the misfire of the engine during warm-up, presented in the form of a flowchart in figure 3. The procedure for determining the misfire of the engine during warm-up at 6 is the same as the procedure for detecting misfire of the engine during the warm-up time figure 3, except for the additional steps S162 and S164 after processing of steps S160. The following description mainly refers to the procedures for determining the misfire of the engine during the warm-up according to the second variant Khujand the exercise of, different from the procedures for determining the misfire of the engine during the warm-up according to the first variant of implementation explained above.

During the procedure of determination of the misfire of the engine during the warm-up according to the second variant implementation, the CPU 24A of the electronic unit 24 controls the engine first receives the data required for determining the misfire of the engine, for example, the angle SA of rotation of the cranks from the sensor 140 of the rotation angle of the crank (step S100), and calculates the speed N of the crankshaft 26 at each corner of SA of rotation of the cranks 60 degrees on the basis of the input angle SA of rotation of the cranks (step S110). The CPU 24A then calculates the fluctuation Nxd rotation at an angle SA of rotation of the cranks at every 120 degrees in accordance with the setting of the ignition timing for each of the six cylinders of the engine 22 as the difference between the speed N of rotation at an angle SA of rotation of the cranks at every 60 degrees (step S120). The CPU 24A then calculates the difference between the calculated fluctuation Nxd rotation at a certain angle SA of rotation of the cranks and the calculated fluctuation Nxd rotation when the previous 360 degrees angle SA of rotation of the cranks as the difference fluctuations Nxd360 rotation (step S130) and the difference between calc is authorized fluctuation Nxd rotation at a certain angle SA of rotation of the cranks and the calculated fluctuation Nxd rotation during the previous 720 degrees angle SA of rotation of the cranks as the difference Nxd720 fluctuations of rotation (step S140). The calculated difference Nxd360 fluctuations of rotation is compared with a preset first reference value A1 for determining misfire for 360 degrees (step S150), while the calculated difference Nxd720 fluctuations of rotation is compared with a preset first reference value V1 for determining misfire for 720 degrees (step S160). If the calculated difference Nxd360 fluctuations of rotation does not exceed a predetermined first reference value A1 for determining misfire for 360 degrees, or if the calculated difference Nxd720 fluctuations of rotation does not exceed a predetermined first reference value V1 for determining misfire for 720 degrees, the CPU 24A identifies it as the absence of misfire in and out of the procedures for determining the misfire of the engine during warm-up at 6.

If the calculated difference Nxd360 fluctuations of rotation exceeds the first reference value A1 for determining misfire for 360 degrees, or if the calculated difference Nxd720 fluctuations of rotation exceeds the first reference value V1 for determining misfire for 720 degrees, the intermediate difference fluctuations of rotation from the Nm(1) Nm to(4) are calculated as the difference between the fluctuation Nxd(n-1) rotation during the preceding 120 degrees angle SA of krivos the surface and fluctuation Nxd(n-2), Nxd(n-3), Nxd(n-4) and Nxd(n-5) rotation with each other prior to 240 degrees, angle SA of rotation of the cranks, the other, the previous 360 degrees, angle SA of rotation of the cranks and the other prior to 540 degrees, angle SA of rotation of the cranks (step 3162). The CPU 24A then determines whether all of the calculated intermediate difference with Nm(1) Nm(4) fluctuations of rotation is less than the specified intermediate reference value C1 for determining misfire (step S164). Fluctuation Nxd(n-1) rotation refers to the immediately preceding cylinder with the ignition just before a specific cylinder, which has a fluctuation Nxd(n) rotation and presumably has a misfire on the basis of the difference Nxd360 fluctuations of rotation and the difference Nxd720 fluctuations of rotation. Fluctuation Nxd(n-2), Nxd(n-3), Nxd(n-4) and Nxd(n-5) rotation respectively belong to the first preceding cylinder, the second preceding cylinder, the third preceding cylinder and the fourth preceding cylinder which is ignited for one cylinder, two cylinder, three cylinder and the four cylinder before the immediately preceding cylinder with the ignition. As shown in Fig.7, the intermediate difference fluctuations rotation with Nm(1) Nm(4) represent the difference between the fluctuation Nxd(n-2), Nxd(n-3), Nxd(n-4) and Nxd(n-5) rotation and fluctuation Nxd(n-1) rotation is. Namely, the intermediate difference fluctuations rotation with Nm(1) Nm(4) represent the difference between the fluctuation of rotation for the immediately preceding cylinder, which assume a normal ignition (i.e. assume the absence of misfire), and fluctuations in the rotation for other preceding cylinders placed before the immediately preceding cylinder. Cylinders with normal ignition have similar fluctuations in rotation, so that a very small difference between the fluctuations of rotation of the cylinder with the normal ignition. Intermediate-difference fluctuations rotation with Nm(1) Nm(4) respectively have small values. The procedure according to the second variant implementation defines an intermediate reference value C1 for determining misfire by taking into account these conditions. The intermediate reference value C1 for determining the misfire is set to be larger than the standard difference between the fluctuations of rotation of the cylinder without misfire or normally ignited cylinders.

If all intermediate difference fluctuations rotation with Nm(1) Nm(4) is less than the specified intermediate reference value C1 for determining misfire, cylinder, with the difference Nxd360 and Nxd720 fluctuations of the enemy is to be placed, accordingly exceeding the first reference value A1 for determining misfire for 360 degrees and the first reference value V1 for determining misfire for 720 degrees, defined as a cylinder misfire, having a third sequence number of the ignition (step 3170). The CPU 24A then computes the ratio Nja2, Nja3, and Nja4 difference fluctuations of rotation (step S180) and the ratio Njb2, Njb3, and Njb4 difference fluctuations of rotation (step S190), and determines the misfire of the engine based on the calculated ratios Nja2, Nja3, and Nja4 difference fluctuations of rotation and the calculated ratios Njb2, Njb3, and Njb4 difference fluctuations of rotation (steps S200 through S220) in the same manner as in the case of procedures for determining the misfire of the engine during the warm-up according to the first variant implementation. On the other hand, if any of the intermediate differences fluctuations in rotation with Nm(1) Nm(4) not less than the specified intermediate reference value C1 for determining misfire, the CPU 24A identifies the absence of misfire in and out of the procedures for determining the misfire of the engine during the warm-up according to Fig.6 without determining misfire on the basis of the calculated ratios Nja2, Nja3, and Nja4 difference fluctuations of rotation and the calculated ratios Njb2, Nb3 and Njb4 difference fluctuations of the rotation.

As described above, the device for determining misfire according to the second variant implementation, mounted on the hybrid vehicle 20B, first determines whether or not the specified conditions in relation to the difference Nxd360 fluctuations of rotation, calculated as the difference in comparison with the fluctuation Nxd rotation when the previous 360 degrees angle SA of rotation of the cranks, and the ratio of the difference between Nxd720 fluctuations of rotation, calculated as the difference in comparison with the fluctuation Nxd rotation during the previous 720 degrees angle SA of rotation of the cranks. Upon satisfaction of the specified conditions the device for determining misfire according to the second variant implementation calculates the running-difference fluctuations rotation with Nm(1) Nm(4). Intermediate-difference fluctuations rotation with Nm(1) Nm(4) represent the difference between the fluctuation Nxd(n-2), Nxd(n-3), Nxd(n-4) and Nxd(n-5) rotation and fluctuation Nxd(n-1) rotation. Fluctuation Nxd(n-1) rotation refers to the immediately preceding cylinder with the ignition just before a specific cylinder, which has a fluctuation Nxd(n) rotation and presumably has a misfire on the basis of the difference Nxd360 fluctuations of rotation and the difference Nxd720 fluctuations of rotation. Fluctuation Nxd(n-2), Nxd(n-3), Nxd(n-4) and Nxd(n-5) rotation respectively refer to the first the previous cylinder, the second preceding cylinder, the third preceding cylinder and the fourth preceding cylinder which is ignited for one cylinder, two cylinder, three cylinder and the four cylinder before the immediately preceding cylinder with the ignition. A device for determining misfire according to the second variant of implementation determines the misfire of the engine when all the intermediate difference fluctuations rotation with Nm(1) Nm(4) is less than the intermediate reference value C1 for determining misfire, which is set larger than the standard difference between the fluctuations of rotation of the cylinder without misfire or normally ignited cylinders. This device provides a more adequate and accurate determination of the misfire of the engine during warm-up of catalyst included in block 134 control exhaust, with a significant delay in the ignition in the engine 22. A device for determining misfire according to the second variant of implementation determines the misfire of the engine based on the ratios Nja2, Nja3, and Nja4 difference fluctuations of rotation for the difference Nxd360 fluctuations of the spins and parities Njb2, Njb3, and Njb4 difference fluctuations of rotation for the difference Nxd720 fluctuations of rotation, in addition to the results of the comparisons for RA is ing Nxd360 fluctuations of rotation and the difference Nxd720 fluctuations of rotation and the comparison results with respect to intermediate varieties fluctuations of rotation Nm(l) no Nm(4). This system helps to improve the adequacy and accuracy of misfire of the engine.

A device for determining misfire according to the second variant implementation, mounted on the hybrid vehicle 20B, calculates the running-difference fluctuations rotation with Nm(1) Nm(4) as the difference fluctuation Nxd(n-2), Nxd(n-3), Nxd(n-4) and Nxd(n-5) rotational fluctuation Nxd(n-1) rotation. Fluctuation Nxd(n-1) rotation refers to the immediately preceding cylinder with the ignition just before a specific cylinder, which has a fluctuation Nxd(n) rotation and presumably has a misfire on the basis of the difference Nxd360 fluctuations of rotation and the difference Nxd720 fluctuations of rotation. Fluctuation Nxd(n-2), Nxd(n-3), Nxd(n-4) and Nxd(n-5) rotation respectively belong to the first preceding cylinder, the second preceding cylinder, the third preceding cylinder and the fourth preceding cylinder which is ignited for one cylinder, two cylinder, three cylinder and the four cylinder before the immediately preceding cylinder with the ignition. A device for determining misfire according to the second variant of implementation determines the misfire of the engine under the condition that all four intermediate-difference fluctuations rotation with Nm(1) Nm(4) is less than the specified intermediate the reference value C1 for determining misfire. However, all of the four intermediate differences fluctuations in rotation with Nm(1) Nm(4) are not necessarily required. One modified procedure may count three intermediate difference fluctuations of rotation or less of the four intermediate differences fluctuations in rotation with Nm(1) Nm(4) and to determine the misfire of the engine if all the computed intermediate difference fluctuations of rotation is less than the specified intermediate reference value C1 for determining misfire.

Hybrid vehicle 20B according to the second variant implementation is the quality of the engine 22 is an internal combustion engine with a single-row arrangement of six cylinders. The procedure according to the second variant of implementation respectively calculates four intermediate-difference fluctuations rotation with Nm(1) Nm(4). The method according to the second variant implementation is applicable to any engine having three or more cylinders, and calculates (the number of cylinders minus 2) intermediate-difference fluctuations of the rotation.

The above-described embodiments of relate to a device for determining misfire, ustanovlennya on the hybrid vehicle 20 equipped with the engine 22, the planetary gear mechanism 30 and the two motors MG1 and MG2. The method according to the invention can be implemented is tulen through the device for determining misfire, installed on any hybrid cars other configurations, and by a device for determining misfire installed on any of the cars other configurations. Other applications of this invention include a device for determining misfire installed on any mobile device other than cars, and a device for determining misfire installed in stationary equipment.

The above-described embodiments of relate to a device for determining the misfire of the engine 22 mounted on the hybrid vehicle 20. The method according to the invention are also realized by an appropriate method of determining the misfire of the engine 22 mounted on the hybrid vehicle 20, as well as by a method for determining the misfire of the engine installed on any of the cars other configurations.

An implementation option and its modified examples discussed above, should be considered in all aspects as illustrative and non-limiting. There may be other modifications, changes and transformations without deviating from the essence and scope of protection of this invention.

The method according to the present invention is preferably suitable for use in areas ol the industry for the manufacture of internal combustion engines and devices for determining misfire for internal combustion engines and in other relevant industries.

1. Device for determining the misfire determining a misfire in the internal combustion engine with multiple cylinders with variable ignition advance and containing:
the block determining the angular position of which determines the angular position of a crankshaft of the internal combustion engine;
a module for calculating the fluctuation of the rotation, which sequentially calculates a fluctuation of rotation and the angles of rotation of the cranks corresponding to the ignition timing for multiple cylinder internal combustion engine on the basis of specific angular positions of the crankshaft of the internal combustion engine;
a module for calculating the difference of the fluctuations of the rotation, which calculates the first difference fluctuations of rotation and the second difference fluctuations of rotation, the first difference of the fluctuations of the rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, calculated at an angle of rotation of the crank prior to each of the respective angles of rotation of the cranks to the specified first angle and the second difference fluctuations of rotation is the difference between each of the fluctuations of rotation, sequentially calculated during match what their angles of rotation of the cranks, and fluctuation of rotation, calculated at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks on a preset second angle that is different from the predetermined first angle; and
the detection of misfire of the engine, which determines the misfire of the internal combustion engine on the basis of the first difference of the fluctuations of rotation and the second difference fluctuations of rotation calculated by the module for calculating the difference fluctuations of rotation, during the period of time from the start of the internal combustion engine to run on the specified condition.

2. The device according to claim 1, in which the specified condition is the completion of warming up of the catalyst included in the control unit of the exhaust of the internal combustion engine.

3. The device according to claim 1, in which the internal combustion engine is driven with a delay of ignition for heating the catalyst included in the control unit of the exhaust of the internal combustion engine.

4. The device according to claim 1, wherein the module for determining the misfire of the engine determines the misfire of the internal combustion engine, when the first difference fluctuations of rotation is not less than the predetermined first value and when the second difference fluctuations of rotation is not less than a given second is elicina, which is different from the predetermined first value.

5. The device according to claim 4, in which the preset first value is less than the predetermined second value.

6. The device according to claim 4, in which the module for determining the misfire of the engine determines the misfire of the internal combustion engine when a ratio of the first object-difference fluctuations of rotation, which is selected as the first difference of the fluctuations of the rotation component is not less than a preset first value, and the other first-difference fluctuations of rotation different than the first object, the difference between the fluctuations of rotation is in a predetermined first interval ratios identify misfires, and when the ratio of the second object-difference fluctuations of rotation, which is selected as the second difference of the fluctuations of the rotation component is not less than the predetermined second value, and the other difference fluctuations of rotation of the other than the second object difference fluctuations of rotation is in a predetermined second interval ratios identify misfire that is different from the preset first interval ratios identify misfire.

7. The device according to claim 6, in which another first difference fluctuations of rotation is one of the following differences fluctuations: the third preceding the first difference fluctuations, which rubs the her before the first object by the difference in the fluctuations of rotation, immediately preceding the first difference of the fluctuations in the rotation immediately before the first object by the difference in the fluctuations of rotation and directly following the first difference of the fluctuations in the rotation immediately after the first object-difference fluctuations of rotation, and another second difference fluctuations of rotation is one of the following differences fluctuations: the third before the second, the difference fluctuations, which is the third before the second object by the difference in the fluctuations of rotation, immediately preceding the second difference fluctuations of the rotation immediately before the second object by the difference in the fluctuations of rotation and directly followed by the second difference fluctuations of rotation immediately after the second object-difference fluctuations of the rotation.

8. The device according to claim 4, in which the module for determining the misfire of the engine determines the misfire of the internal combustion engine is provided that the intermediate difference fluctuations of rotation is less than the specified intermediate reference value when the first difference fluctuations of rotation is not less than the predetermined first value and when the second difference fluctuations of rotation is not less than the predetermined second value, the intermediate difference fluctuations of rotation is the difference between fluctuat is her rotation at an angle of rotation of the cranks, prior to each of the respective angles of rotation of the cranks on the phase angle corresponding to the phase of the several cylinders, and the fluctuation of rotation at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks on the value obtained by multiplying the given phase angle on at least one numerical value selected from among the cylinders, this number minus 1 and this number minus 2.

9. The device according to claim 8, in which the module for determining the misfire of the engine determines the misfire of the internal combustion engine when all intermediate difference fluctuations of rotation, which is given as the difference of the fluctuations of the rotation angles of rotation of cranks before the multiplication phase angle for the specified number, this number minus 1 and this number minus 2, is less than the specified intermediate reference value.

10. The device according to claim 1, wherein the specified first angle is 360, and a preset second angle is 720.

11. The device according to claim 1, wherein the module for calculating the fluctuation of the rotation calculates the angular velocity of rotation at each predetermined angle of rotation of a crankshaft of the internal combustion engine, and calculates the fluctuation of rotation as the difference between the angular velocity of rotation in accordance with the installation of ignition for each of a number of the x cylinders of the internal combustion engine and the angular velocity of rotation when the previous installation of the ignition timing before the specified angle of the cranks.

12. The device according to claim 1, wherein the module for calculating the fluctuation of the rotation calculates the angular acceleration of rotation corresponding to the installation of ignition for each of the multiple cylinders of the internal combustion engine, as the fluctuation of rotation at an angle of rotation of the cranks corresponding to the ignition.

13. The device according to claim 1, in which the internal combustion engine mounted on the hybrid vehicle, and operates at the moment of actuation regardless of the operating conditions of the hybrid car.

14. The method for determining the misfire, which determines the misfire in the internal combustion engine with multiple cylinders with variable ignition advance, in which:
(a) sequentially calculate the fluctuation of the rotation angles of rotation of the cranks corresponding to the ignition timing for multiple cylinder internal combustion engine, based on the identified angular positions of the crankshaft of the internal combustion engine;
(b) calculate the first difference fluctuations of rotation and the second difference fluctuations of rotation, the first difference of the fluctuations of the rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, vicilin is th at an angle of rotation of the crank, prior to each of the respective angles of rotation of the cranks to the specified first angle and the second difference fluctuations of rotation is the difference between each of the fluctuations of rotation, sequentially calculated at the respective angles of rotation of the cranks, and the fluctuation of rotation, calculated at an angle of rotation of the cranks prior to each of the respective angles of rotation of the cranks on a preset second angle that is different from the predetermined first angle; and
(c) determine the misfire of the internal combustion engine based on the calculated first difference fluctuations of rotation and the calculated second difference fluctuations of rotation during the time period from the start of the internal combustion engine to run on the specified condition.

15. The method according to 14, wherein in step (C) determine the misfire of the internal combustion engine during the time period from the start of the internal combustion engine prior to the completion of warming up of the catalyst included in the control unit of the exhaust of the internal combustion engine.

16. The method according to 14, wherein in step (C) determine the misfire of the internal combustion engine, when the first difference fluctuations of rotation is not less than the predetermined first value and when the second difference fluctuations of rotation does not lower the e predetermined second value, which is different from the predetermined first value.

17. The method according to 14, which determines the misfire of the internal combustion engine, which is driven at startup delay ignition for heating the catalyst included in the control unit of the exhaust of the internal combustion engine.
Priority items:

24.02.2005 according to claims 1-7, 10-17;

07.09.2005 on PP, 9.



 

Same patents:

FIELD: motors and pumps.

SUBSTANCE: invention relates to engine engineering and particularly to methods used to control internal combustion engines (ICE) operation with distributed fuel injection. According to the invention the above mentioned method allows for increasing accuracy of ICE operation control when phase sensor is unavailable due to phased injection start attribution to engine start mode. Method of ICE operation control includes ICE start mode, after-start mode of ICE operation and phase determination of ICE operation duty cycle. ICE is provided with electronic control system including crank shaft position sensor, microcomputer-based controller, fuel injectors and inductor coils. The described method provides for selecting ICE cylinder, conducting test fuel injection into the selected cylinder, igniting air and fuel mixture in the selected cylinder and determining working stroke of the selected cylinder and working duty cycle phase based on engine reaction. The working duty cycle phase is determined in ICE start modes. For this purpose ICE crank shaft is brought to rotation by starter. Then fuel is injected in testing mode into the selected ICE cylinder, which is next in engine operation sequence. Consequently air and fuel mixture is ignited in the above cylinders. Fuel is injected into the remaining cylinders after the phase of ICE working duty cycle is determined while ICE is transmitted into the after-start operation mode.

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2 cl, 9 dwg

FIELD: engines and pumps.

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FIELD: physics, measurement.

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8 cl, 18 dwg

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24 cl, 1 dwg

FIELD: engines and pumps.

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1 dwg

FIELD: engine and pumps; blasting.

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FIELD: physics, measuring.

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FIELD: physics, trials.

SUBSTANCE: invention concerns trials of impeller machines, in particular, turbochargers for pressurisation of internal combustion engines, and can find wide application at trials. The turbocharger trial method consists that gas is injected on an inlet in the turbine, on an inlet in the compressor given in gyration by the turbine, - surrounding or pressure air, determine their rate of flux and pressure. In addition measure a curl rotation frequency of the turbocharger, the gas rate of flux on an inlet in the turbine or the heavy air rate of flux on an inlet in the compressor change under the sinusoidal law, then spot time of retardation of the peak pressure for an exit from the compressor and a rotation frequency of the turbocharger concerning the peak pressure on an inlet in the turbine or spot time of retardation of the peak pressure for an exit from the turbine and a rotation frequency of the turbocharger concerning the peak pressure of a heavy air on an inlet in the turbine, or determine time of retardation of the peak rate of flux of a heavy air for an inlet in the compressor and rotation frequencies turbochanger concerning the peak pressure on an inlet in the turbine, or spot time of retardation of the peak rate of flux of gas for an inlet in the turbine and curl rotation frequencies of the turbocharger concerning the peak pressure of a heavy air on an inlet in the compressor and on their time of retardation judge turbocharger state.

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FIELD: physics, tests.

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The invention relates to a method and device control arithmetic logic module (ALM) in the vehicle

The invention relates to the field of automatic system of temperature regulation in cooling systems of power plants vehicles

The invention relates to the use of internal combustion engines in cars and machinery units for various purposes, in particular, is intended for use in vehicles equipped with a gearbox with step change of the gear ratio and variable-speed drive with stepless speed control

The invention relates to automatic control of internal combustion engines

FIELD: engines and pumps.

SUBSTANCE: proposed invention relates to devices designed to define the ICE combustion misses and appropriate methods to this end. This invention proposes the device allowing determining the combustion misses. It determines if the difference Nxd360 of rotation fluctuation exceeds, as the difference between rotation fluctuation Nxd at a certain angle CA of the engine crank turn angle and rotation fluctuation Nxd at CA crank turn angle preceding by 360 degrees the preset reference value A1 (stage S150), and if the rotation fluctuation difference Nxd720 and the difference between the rotation fluctuation Nxd at a certain crank turn angle, exceeds the preset reference value B1 (stage S160). The proposed device allows determining the combustion misses provided all the requirements specified in relations Nja2, Nja3 and Nja4 of rotation fluctuation differences proceeding from the rotation fluctuation difference Nxd360 (stage S200) are met as well as those specified in Njb2, Njb3 and Njb4 proceeding from the rotation fluctuation difference Nxd720 (stage S210), when both differences Nxd360 and Nxd720 exceed reference values A1 and B1 (stages S150 and S160).

EFFECT: higher adequacy and accuracy of determination of combustion misses during warming up of catalyst incorporated with exhaust gas control unit with notable ignition delay.

16 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: automatic combined microprocessor-based temperature controller incorporated with the vehicle power plant comprises AC current source, control element with temperature pickup, two identical induction motors with phase rotors and stator windings connected to electric power source. Rotor windings are connected in series via resistors; rotor and stator shafts are linked up with cooling fan shaft. Rotary stator of one of the induction motors is linked up with control element. Proposed device additionally comprises power plant output pickup, ambient cooling air temperature pickup and stator turn angle pickup connected to microprocessor controller inputs. Induction motor stator turning mechanism is connected to one of the controller outputs. Saturation throttle operating windings (magnetic amplifiers) are connected parallel to resistors that connect induction motor rotor windings, control windings of the former being connected to the second output of microprocessor controller via control unit. In compliance with another version of the temperature controller, induction motor rotor windings are connected in series via emitter-collector junctions of the transistors with their bases and emitters connected to aforesaid second output of microprocessor controller control transistor control unit.

EFFECT: automatic combined microprocessor-based temperature controller incorporated with the vehicle power plant.

2 cl, 5 dwg

FIELD: automotive industry.

SUBSTANCE: invention relates to automotive control instrumentation. Proposed control instrument controls the device incorporated with the vehicle to generate setting for vehicle device, control the latter using said setting and settle conflicts between several settings for one device. In the case of conflict, at least one of two settings is expressed in units other than those of another setting. Control instrument converts physical magnitudes of settings to unify units. Prior to converting physical magnitude of setting, the latter is memorised by control instrument. Conflict settled and setting required inverse conversion of physical magnitude, control instrument outputs memorised setting to make a device setting. Said device can made a vehicle traction force source. In setting generation, first and second settings are generated. First setting is base don driver manipulations (S100). Second setting is not based on driver manipulations. When engine makes the vehicle traction force source, first setting "a" is expressed in torque units (S200). Second setting "A" is expressed in traction force units (S400). On converting physical magnitudes, conversion into units of traction forces (S500) is carried out. First setting "a" (S300) is memorised. If first setting is selected after conflict settling (no S600), memorised first setting "a" (S900) is set for the engine.

EFFECT: better vehicle controllability.

3 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to ICE spark failure identifier, vehicle with such identifier and method to identify ICE spark failure. ICE spark failure identifier comprises: turn position determination assembly, assembly to calculate rpm at singular turn angle or assembly to calculate angular speed at singular turn angles and assembly to identify spark failures. Assembly to identify spark failures reveals if ICE cylinders are subjected to spark failure conditions by procedures intended for identification of ICE spark failures. Procedures intended for identification of ICE spark failures comprise first and second procedures. First procedures are used in case ICE drive point (rpm Ne and torque Te) does not belong in rear section resonance region (s120). Second procedures are used in case ICE drive point (rpm Ne and torque Te) belong in rear section resonance region (s130). First procedures proceed from rpm irregularity at singular turn angle or angular speed irregularity at singular turn angles. Second procedures proceed from rpm irregularity at singular turn angle or angular speed irregularity at singular turn angles after filtration. Filtration is performed by HF filters. Vehicle comprises multi-cylinder ICE, rear part and spark failure identifier. Rear part is mounted on semi-axle side via damper. Spark failures are revealed by first or second procedure for rpm at singular turn angles.

EFFECT: higher accuracy and validity of determination.

35 cl, 20 dwg

FIELD: engines and pumps.

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EFFECT: higher fuel efficiency.

3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed system comprises fuel pump, fuel tank, thermal machine control component, booster valve, safety valve and booster valve. Said system additionally incorporates: first fuel metre to measure fuel temperature at high-pressure pumps inlets, second metre to measure output of thermal machine, third metre to measure temperature of fuel bled from fuel tank by fuel pump, two-way bypass valve arranged between fuel gas heater and exhaust manifold, first, second and third setpoint adjusters and first, second and third comparators. Third comparator is connected with third metre and third setpoint adjuster. Second comparator is connected with second metre and second setpoint adjuster. First comparator is connected with first metre. First setpoint adjuster, second and third comparators and two-way bypass valve drive. First metre, first setpoint adjuster, and two-valve bypass valve with drive make temperature controller that regulates temperature in compliance of current temperature deviation from preset temperature. Second metre, second setpoint adjuster, and two-valve bypass valve with drive make temperature controller that regulates temperature in compliance with thermal machine power output disturbance (first disturbance). Third metre, third setpoint adjuster, third comparator and two-valve bypass valve with drive make temperature controller that regulates temperature in compliance with current temperature of fuel bled from fuel tank (second disturbance). Functions of first, second and third setpoint adjusters, first, second and third comparators are fulfilled by microprocessor controller that ensure required static and dynamic operating parametres of proposed system in compliance with programmed algorithms.

EFFECT: higher fuel efficiency.

3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed engine comprises mechanism (B) to provide for variable synchronisation and control the opening of inlet valve 7 and mechanism (A) to provide for variable compression ratio and vary mechanical compression ratio. To produce required output torque at increasing atmospheric pressure, the moment of inlet valve opening is set to approximate to that of passing intake stroke DTC and mechanical compression ratio is decreased.

EFFECT: possibility to control temperature at intake stroke termination.

19 cl, 18 dwg

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