Control device for internal combustion engine

FIELD: engines and pumps.

SUBSTANCE: internal combustion engine control device is suggested, in which the electronic control unit is made with possibility to switch the control algorithms to calculate the command values for the actuator between the first control algorithm and the second control algorithm, and also to calculate the value received by summation the second control algorithm component value, varying in accordance with the deviation, calculated in the current control cycle, with the command value, calculated under the previous control cycle in accordance with the first control algorithm, as the value for the command value, calculated in the current control cycle, in the first control cycle after switching from the first control algorithm to the second control algorithm. Values of the component, varying in accordance with the deviation includes the I-component I-control updating value of calculated under the previous control cycle.

EFFECT: suppression of the sudden command value change for the actuator due to switching of the control algorithm, not resulting the controllability reduction relatively to the control value.

6 cl, 15 dwg

 



 

Same patents:

FIELD: motors and pumps.

SUBSTANCE: in control device for internal combustion engines the pressure sensor (34) inside the cylinder is intended for measurement of pressure P in the cylinder of the internal combustion engine (10). When consecutive or almost consecutive premature ignition is detected by the pressure sensor in the cylinder (34) the control unit hinders the control of suppression of consecutive occurrence of premature ignition when Pmax during premature ignition is low, in comparison with when Pmax during premature ignition is high.

EFFECT: ensuring balance between prevention of excessive rise of the piston temperature and prevention of deterioration of various operational characteristics of internal combustion engines as a result of control applied for suppression of abnormal combustion even when abnormal combustion happens consistently or almost consistently during a series of cycles.

5 cl, 11 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used in automotive vehicles equipped with ICEs. ICE device comprises vehicle motion external conditions detection unit, vehicle speed computation unit, target output characteristic setting unit and output characteristic variation unit. Said vehicle motion external conditions detection unit can detect vehicle external on-rod motion conditions. Said vehicle speed computation unit computes vehicle speed under detected motion external conditions. Said target output characteristic setting unit can decrease ICE output parameter corresponding to accelerator position variation as vehicle speed difference between recommended vehicle speed and a actual speed. Besides, it can set target ICE output characteristic acceptable for constant motion at recommended vehicle speed when difference between recommended speed and actual speed equals zero. Said output characteristic variation unit can vary ICE output characteristic to target output characteristic. Invention discloses the ICE output characteristic control device implementation.

EFFECT: normal fuel consumption irrespective of different driving techniques.

13 cl, 25 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to automotive industry. EGR system diagnostics in diesel consists in determination of gas temperature and pressure in intake and discharge pipes to construct the model for determination of temperature decrease y=ΔT in EGR coolant by engine control unit. Note here that said model vector parameter θ and input vector x. Engine control unit is used to calibrate the model calibration for estimation of system shift h0 and calculation of the set of primary discrepancies ε (θ0, x, ΔT), starting from model formula and with application of calibration phase results. Calculation of the set of perfected discrepancies εN0) is executed by mathematical formula subject to the quantity of specimens subjected to diagnostics tests. Engine control unit is used to calculate the diagnostics index S by mathematical formula incorporating correlation matrix R0 calculated for sound system. Said diagnostics index S is used for evaluation of EGR coolant efficiency.

EFFECT: ruled out temperature gages in EGR coolant.

6 cl, 3 dwg, 1 tbl

FIELD: engines and pumps.

SUBSTANCE: invention relates to internal combustion engine start control systems. The internal combustion engine has a throttle for control of volume of suction air and performs starting by means of cranking. The starter switch detects initiation of cranking, and the sensor of cranked shaft rotation angle determines rpm of the engine. The controller actuates a throttle in the closed position along with initiation of cranking. The controller can get both negative pressure at the inlet for fuel evaporation stimulation, and the suction air volume necessary to maintain idle rpm, by means of counting of number of steps or rpm of the internal combustion engine from initiation of cranking and throttle opening from the closed position when the counted number reaches the pre-set value.

EFFECT: ensuring of throttle regulation by creation of negative pressure at the inlet at simultaneous feeding of the respective volume of suction air.

7 cl, 11 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used in internal combustion engines, particularly, in selective catalytic recover systems. Invention relates to fluid feed system wherein fluid is fed via delivery device (230) to container (205), particularly, to at least one consuming point (250). This process consists in determination of air presence at the inlet of delivery device (230). In case air presence is revealed, delivery device (230) output is decreased as compared to normal operating conditions. Invention discloses fluid feed system, carrier with fluid feed system and machine readable carrier.

EFFECT: decreased amount of undesirable exhaust gases in selective catalytic reduction system.

23 cl, 5 dwg

FIELD: transport.

SUBSTANCE: set of inventions relates to vehicle engine control. Engine control device limits crank angle value updating based on signal from crankshaft rotation detector during time period from the moment when starter gear movement actuator is made operational till the moment when starter gear rotating drive is made operational. Also, control device updates crank angle after starter and crankshaft gears engagement is completed. Proposed invention also relates to engine starting device comprising starter and above mentioned control device, as well as to method of control according to above mentioned control device and vehicle.

EFFECT: prevention of erratic crank angle determination due to noise occurrence in rotation angle sensor.

12 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used in internal combustion engines. ICE effective power controller comprises detector of requests for braking designed to reveal is braking request is executed and controller. Controller is programmed to limit ICE effective power when braking request job is executed and to inhibit the limitation of said power during the preset time interval of limitation disabling when braking request job terminates. Besides, it is designed to decreased limitation inhibit time when preset definite condition is satisfied. Invention covers also the ICE effective power control process.

EFFECT: carrier braking by brake pedal depression in case accelerator pedal fails.

5 cl, 8 dwg

FIELD: transport.

SUBSTANCE: invention can be used in automotive vehicles equipped with ICEs. Control device is mounted at carrier. Said carrier comprises engine to run on first fuel and second fuel, second fuel being characterised by smaller emission. Device comprises fuel changing components to select between first and second fuel to be fed into engine. It comprises catalyst arranged in engine exhaust system and catalyst wear detector. Control device is designed to control catalyst wear when carrier operating range corresponds to that suitable for wear detection when fuel changing device feeds first fuel to the engine.

EFFECT: control device controls catalyst wear after carrier operating range corresponds to that suitable for wear detection when fuel changing device feeds second fuel to the engine.

7 cl, 4 dwg

FIELD: transport.

SUBSTANCE: proposed device serves to detect flow rate meter (11) malfunction when deviation factor, i.e. deviation of estimated sucked air volume deviation relative to actual volume measured by air flow rate meter (11) exceeds reference magnitude for determination of malfunction proceeding from ICE (1) rpm. As engine rpm decreases, upper extreme criterion of diagnostics increases while lower one decreases to narrow the range of defining of air flow meter defect availability Therefore, said diagnostics can be executed over the entire ICE (1) rpm range without deteriorating the performances of off-gas exhaust system which can be caused by flaws in air flow meter (11).

EFFECT: flaw detection at low volumes of sucked air.

7 cl, 4 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to ICEs. Proposed device serves to detect flow rate meter malfunction when deviation factor, i.e. deviation of estimated sucked air volume deviation relative to actual volume measured by air flow rate meter exceeds reference magnitude for determination of malfunction proceeding from ICE rpm. Proposed device defines normal operation of air flow rate meter when engine rpm exceeds or equals preset rpm provided the deviation is smaller than or equals reference value. It maintains, besides, the current result of determination when ICE rpm is smaller than predefined magnitude under particular conditions. This allows determination, proceeding engine rpm, if air flow rate meter operation is normal or is current result of determination is invariable.

EFFECT: higher accuracy of diagnostics.

4 cl, 4 dwg

FIELD: transport.

SUBSTANCE: invention relates to operation of diesel particle filters. Method of control over particle filter (15) of diesel (11) with carbon-black pickup (18) arranged at diesel particle filter (15) outlet (19). Note here that said carbon-black pickup (18) operates in compliance with the sequence of carbon-black filling phases divided by regeneration phases. This process comprises the stage whereat filter (15) boundary efficiency (Ebdl) is set. During regeneration phase readings of the counter that displays the level of pickup (18) filling with carbon-black are reset. Counter readings (I) are iteratively increased during the next filter filling stage unless readings (I) reach the counter preset threshold readings (lth). Filter (15) efficiency DPF is considered inadmissible in case the next regeneration phase of pickup (18) starts when counter readings (I) are lower than said preset threshold magnitudes (Ith).

EFFECT: reliable evaluation of diesel particle filter under real road conditions.

14 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: invention can be used in diesel engines. The diesel engine contains a particulate filter (13) installed in a discharge line (9) of the engine and an electronic control unit (3) for control of fuel nozzles (2) associated with engine cylinders. The electronic control unit (3) is configured for triggering, when the quantity of the particles accumulated in the filter (13), exceeding the threshold value is detected or assessed, of the method of control of nozzles (2) which identifies automatic recovery of the filter (13) by means of increase of temperature of exhaust gases sent to the filter (13), sufficient for burning out of particles in the filter. The electronic control unit (3) is configured for actuating of alarm condition, prohibiting the mode of automatic recovery and at the same time permitting the recovery mode by request which can be actuated manually by a driver when the electronic control unit (3) reveals a value lower, than a pre-set threshold value of the parameter identifying the quality of lubricant oil of the engine. The engine is fitted with manual controls for actuating of the mode of recovery by request. The electronic control unit (3) is configured for actuating of alarm condition also when the electronic control unit (3) detects the excess of the pre-set threshold value of amount of adverse events in which the stage of automatic recovery is interrupted before its end. The electronic control unit (3) is configured so that in case of detection of amount of adverse events with higher value, than threshold one, the condition alarm with prohibition of the automatic recovery mode and permission of the mode of recovery by request was actuated only in case when the electronic control unit also detects resistance to a flow of exhaust gases through the particulate filter, higher, than the threshold value. The quality of lubricant oil the engine is estimated by means of pre-set algorithm on the basis of value of the parameter defining the oil quality. The diesel engine control method is described.

EFFECT: decrease of impact of injected fuel on lubricant oil.

11 cl, 4 dwg

FIELD: technological processes.

SUBSTANCE: invention relates to regeneration of a particulate filter. The method of regeneration of a particulate filter (202), related to the burning process, where the filter is made as capable of treatment of exhaust gases arising in process of burning in an internal combustion engine (101), at the same time the method includes in process of the specified regeneration control of the specified engine (101) according to the first mode and the second mode, and in the first mode the engine (101) is controlled so that high temperature of exhaust gases is generated. The method additionally includes determination of temperature of the specified particulate filter (202) and control of the specified filter (101) according to the specified first mode, when the specified determined temperature is below the first value. The invention also relates to the system and a vehicle (100).

EFFECT: provision of effective regeneration of a particulate filter.

20 cl, 6 dwg

FIELD: transport.

SUBSTANCE: invention relates to method relevant to SCR system for engine exhaust gases purification. Proposed invention consists in the following: method relates to SCR system for engine exhaust gases purification (150), which system contains batcher (250) placed in thermal contact with engine exhaust system and designed to feed chemical reducing agent to exhaust pipe (240) of exhaust system and includes phase of determination (s340) if there is undesired level of batcher (250) temperature. The method also includes phase (s360) of exhaust pipe (240) temperature limiting if undesired level of temperature is detected. Also, the proposed invention relates to computer software product containing program code (P) for computer (200; 210; 400) designed for implementation of the method according to the invention. The invention also relates to device and vehicle (100) equipped with the proposed device.

EFFECT: improved efficiency of SRC system.

17 cl, 5 dwg

FIELD: transport.

SUBSTANCE: invention relates to automotive industry and can be used for control over ICEs for carriers to be operated at difficult regions. Claim describes the characteristic (2, 3, 4) of the dependence of maximum permissible torque on ICE shaft rpm. Said ICE has control unit to adjust output torque and engine rpm so that they do not fall beyond aforesaid dependence set by at least one interval (n0-n1) of torque increase, range (n0-n1) constant outputs and range (n2-n3) of torque linear decrease. Torque linear decrease range is set so that engine rpm decrease at engine high output while at low output engine rpm increase.

EFFECT: fuel saving at sufficient engine controllability.

9 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to ICE exhaust gas system with at least one catcher of solid particles and at least one catalytic neutraliser. Processing of exhaust gas comprises at least the steps that follow. (a) ICE processes are controlled with the help of the system of lambda control over controlled magnitude (5). (b) Necessity in solid particle catcher recovery is defined. (c) Amount of oxygen required for solid particle catcher recover defined.(d) Lambda-adjustment system is used to set the controlled magnitude to value consistent with required amount of oxygen defined at previous step and maintained during the solid particle catcher recovery period. Invention covers also the carrier with forced-ignition ICE suitable for implementation of above described process.

EFFECT: perfected operation.

9 cl, 5 dwg

FIELD: transport.

SUBSTANCE: invention relates to control method for internal combustion engine connected with torque convertor having interlock function and can be used in vehicles. Claim describes control method and assembly providing control of internal combustion engine connected with torque convertor. Torque convertor can work in torque convertor mode or interlock mode. Steps of control include current operation mode determination - torque convertor or interlocked - and selection of engine speed control according to operator input action in torque convertor mode, and selection of output power control and (or) output engine torque control according to operator input action on accelerator assembly in interlocking mode.

EFFECT: invention also relates to vehicle power transmission including such control assembly and to a vehicle including such power transmission.

22 cl, 7 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to control methods of propulsion plant operation including four-stroke internal combustion engine. Technical result concludes in improvement of engine temperature mode control and waste gas temperature control. Described is a control method of internal combustion engine operation with at least one cylinder and operating by four-stroke cycle. The engine has at least one controlled inlet for control of combustion chamber connection to intake path. Outlet is controlled thus providing its primary phase of opening mostly during intake stroke.

EFFECT: control method includes inlet control program providing its auxiliary phase opening during operating cycle stroke.

15 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed control system comprises ignition system with N-channel distributor wherein N is the number of cylinders, liquid fuel feed system (LFFS) and gas fuel feed system (GFFS). Fuel changeover is performed by fuel changeover switch. LFFS is composed of carb feed system with first idling economiser and electronic control. GFFS comprises gas cylinder with feed control valve, differential gas control valve and N-fast-action solenoid valves. Control is performed by integral microprocessor control unit. Said control system comprises has temperature gage, absolute pressure gage, waste gas composition transducer, coolant temperature transducer and spark formation moment gage. Control system forms optimum composition of fuel-air mix and advance angle at all ICE operating conditions at using both liquid and gas fuels.

EFFECT: higher operating efficiency.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: in cold starting and/or hearting at idling, ICE 1 is started at preset operating parameters. In compliance with this invention, amount of nitrogen oxides accumulated in SC-catalyst 8 is estimated to activate engine cold starting in case estimation displays nitrogen oxide amount exceeding preset tolerance.

EFFECT: better fuel heat release, reliable starting at very low temperatures.

20 cl, 5 dwg

FIELD: mechanical engineering; transport engineering; engines.

SUBSTANCE: according to proposed method of control of vehicle engine unit having at least one regulated parameter, said parameter is regulated depending on at least one preset value of output parameter of engine unit. Said value is chosen from several preset values. At first stage, preset values which do not depend on engine unit are used first preset value. At second stage, basing of this preset value and at least one preset value depending on engine, second preset value is formed which acts onto at least one regulated parameter. Vehicle engine unit control device has at least one control unit with at least one microcomputer which puts out, depending on at least one preset value of output parameter of engine unit, at least one control action to change regulated parameter. First part contains programs which do not depend on engine and it interacts through interface with second part which contains programs depending on engine. First part makes it possible to put out preset values and parameters to interface and receive preset value and parameters from part which depends on engine. According to second design version, engine unit control device of vehicle has at least one control unit with at least one microcomputer which makes it possible to put out, depending on at least one preset value of output parameter of engine unit, at least one control action to change regulated parameter. Part contains programs which depend on engine on engine and interacts through interface with part containing programs which do not depend on engine. Part depending on engine makes it possible to put out to interface preset values and parameters and to receive preset values and parameters from engine part which do not depend on engine.

EFFECT: simplified control of engine unit.

12 cl, 8 dwg

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