The method of controlling an internal combustion engine with switchable cylinders
The invention can be used in control systems and control of internal combustion engines with switchable cylinders. The method of controlling an internal combustion engine with switchable cylinders consists of discontinuation of the fuel supply, thus evenly alternate non cylinders through each cycle of engine operation. Measure the temperature of the engine and the position of the gas pedal by using a position sensor air throttle and compare them with the given values. The supply of fuel is carried out, blocking the control signal, filed by the electronic control unit to the injectors. The lock is a logical device that is introduced in the gap of the electrical circuits between the electronic control unit and the injector and reading signals from the position sensors of the air throttle and the engine temperature. The technical result is to reduce the cooling of the cylinders, which reduces the negative effects of lower operating temperature, and uniform wear of the cylinder group. 2 Il., 1 PL.The present invention relates to the field of Mashinostroenie cylinders.Known way to disable parts of cylinders of the internal combustion engine, according to which disables the group of cylinders through a phased stop the flow of fuel to the injectors, and then turn off the gas distribution mechanism. Enabled disabled cylinders in reverse (patent of Russian Federation №2062341, publ. 20.06.1996).The method does not provide a stepped power control depending on the load on the engine, which reduces the efficiency off the engine.The known method of operation of the internal combustion engine with switchable cylinders (USSR author's certificate No. 1815377 publ. 15.05.1993), according to which stop the flow of fuel-air mixture in turning off the engine cylinders, the number of disabled cylinders is changed depending on the load on the engine.This method does not take into account the temperature regime of the engine. The result of reducing the operating temperature of the engine is incomplete combustion. As a consequence, increases the concentration of aggressive resinous fractions and carbon formation on the piston, which leads to increased corrosion of engine parts and took the with a variable number of working cylinders (patent of Russian Federation №2032824 publ. 10.04.1995), according to which the cylinder is disconnected groups in a certain sequence and with a clock interval. The number of cylinders in the working group change depending on the temperature and speed conditions of the engine.This way there are two major shortcomings. The first is that turning off the cylinders are cooled and the first duty cycle when enabled, are inefficient, resulting in increased fuel consumption and emissions of harmful substances from the exhaust gases. When disconnecting the cylinder in one cycle cooling slightly, so the negative consequences of reducing the operating temperature is negligible. Disabling cylinder more than one cycle entails the increase of negative consequences. The exact setting of the timer to ensure cyclic disable cylinders with their alternation is strictly through one cycle is impossible, because the duration of a work cycle of the engine is changed during the operation. The second drawback is that the total time of operation of each cylinder of the engine without disconnecting different, therefore the wear on the cylinders of the engine is uneven. In the disabled cylinder wear of the cylinder group less so casnova of the invention is to improve the efficiency disable parts of cylinders of the internal combustion engine at partial load and idling.The problem is solved in that in the method of controlling an internal combustion engine with switchable cylinders, namely, that stop the supply of fuel evenly alternating non cylinders through each cycle of operation of the engine, measure the temperature of the engine and the position of the gas pedal by using a position sensor air throttle and compare them with the given values, blocking the signal voltage applied by the electronic control unit to the injectors, a logical device, introduced in the gap of the electrical circuits between the electronic control unit and the injector and reading signals from the position sensors of the air throttle and the engine temperature. That is, cylinder shut-off is made for “traveling wave” without repetitions of rooms off cylinder two cycle engine (1440
rotation of the crankshaft).The implementation of this method, consider a four-cylinder gasoline internal combustion engine equipped with a distribution system of fuel injection and the order of cylinders 1-3-4-2 (ZMZ-4062).In this example, the accelerator pedal position is determined using a sensor which was 1 shows a control circuit of the power supply system of the internal combustion engine.In Fig.2A and b presents the design options control the operation of the injectors.The control circuit of power supply system of the internal combustion engine includes standard engine management system electronic control unit (ECU), sensors, actuators) and put into the gap of the electrical circuit between ECU and injectors logical unit (LU) that is designed to read signals from the position sensors of the air throttle and the engine temperature, and depending on the values of these signals passes a control signal which is fed ECU to the injectors. In LU programmed certain control circuit of Fig.2A and b. The control circuit different (different frequency and order of outages). For example, in Fig.2A the shutdown routine will be called “1 through 4”, that is, every fifth control signal sent from the ECU to the injectors is blocked LU, and therefore the nozzle, which falls this signal does not open. So, in this cylinder comes only air without fuel and it skipped the combustion process (cylinder off). In Fig.2B program off - “1 in 2”, that is, each third signal will be blocked LU. It should be noted, Corey uneven torque will be minimal.Internal combustion engine with switchable cylinders will operate as follows (see table): if the engine temperature is below operating temperature, the logical unit does not influence the operation of the injectors, and the engine is running without shutting down cylinders; reaching the sensor signal, the engine temperature threshold, and the corresponding signal of the position sensor air throttle logic device implements one of the circuits control the operation of the injector (Fig.2A or b); if the throttle the idle, the control circuit of the injectors shown in Fig.2B, if a partial loads, Fig.2A.
Thus, the disabling of each of the cylinders of the engine is not more than one pass of combustion, so the cylinders are cooled slightly and the negative consequences of reducing the operating temperature is negligible, and the total time off each cylinder will be the same, so the wear of the cylinder group of the engine cylinders will be uniform.
Claims
The method of controlling the internal combustion engine is of indraw through each cycle of operation of the engine, characterized in that the measured temperature of the engine and the position of the gas pedal by using a position sensor air throttle and compare them with the given values, blocking the control signal, filed by the electronic control unit to the injectors, a logical device, introduced in the gap of the electrical circuits between the electronic control unit and the injector and reading signals from the position sensors of the air throttle and the engine temperature.
FIELD: mechanical engineering; engines.
SUBSTANCE: invention relates to devices for disconnection of engines in case of emergency situations and to compression brakes of engine trucks. Device for emergency shutting down of internal combustion engine and deceleration of vehicle by engine contains member for closing section of intake pipe line, closing member position setter and compressed air source. Closing member position setter is made in form of crankshaft speed limit pickup, oil pressure drop pickup, cooling liquid temperature rise pickup, and engine retarder control pushbutton. Intake pipeline section closing member is made in form of spool series-connected by pneumatic cylinder, in upper part of which calibrated hole communicating with atmosphere is made with fuel-feed valve connected with fuel-feed main line and with each of above-indicated pickups through check valve, and signal lamp and with engineering retarder control pushbutton and is connected in series with compressed air source. Pickups and engine retarder control pushbutton are connected in parallel.
EFFECT: improved reliability and efficiency of engine in operation, enlarged functional capabilities.
1 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to ICE application in various machines incorporating an electromechanical transmission. The proposed method of stabilising the ICE minimum specific fuel rate by automatically adjusting the ICE operating conditions via a feedback circuit connected to the electromechanical transmission components consists in presetting the engine shaft rpm corresponding to the minimum specific fuel consumption, measuring the said shaft rpm variation at varying outer moment of resistance, comparing the resulted value with the preset one, amplifying the difference signal and feeding it to the AC generator excitation current control circuit input to make the aforesaid moment to comply with that developed by ICE. Note that at the same time, the electric power accumulator output voltage is measured and compared with two preset levels. Given any departure from the aforesaid preset levels, a signal is generated to cut off the ICE in case the voltage exceeds the preset level, or to cut in the ICE in case the measured voltage is lower than the preset one that allows operating the ICE in intermittent service.
EFFECT: stabilisation of minimum specific fuel rate and optimisation of ICE operating conditions at varying electromechanical transmission engine loads, simpler ICE design.
2 cl, 2 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to automotive industry. Proposed method of diesel (1) control consists in generating automatic oscillation of fuel feed device (7). On a sensor (6) signal at load decrease to magnitude smaller than 30% of rated value the fuel feed device position pickup (7) is used to feed signal from speed automatic controller (10) of control unit (13) and frequency generator via current sinusoidal oscillations of amplitude and frequency oscillator (12). Said oscillator (12) is timed by crankshaft turn angle transducer (5) with its angular position. Invention covers also the diesel control at low feed and minimum stable rpm.
EFFECT: lower minimum stable rpm at load and idling.
2 cl, 4 dwg
FIELD: engines and pumps.
SUBSTANCE: claimed system comprises the device (100) to decreased the carbon emissions and carbon credit control server. The device (100) consists of the fuel data control module (110), idling limitation module (120), carbon dioxide emission limitation calculation module (130) and carbon credits conversion module (140). Note here that module (110) can define the fed fuel grade and volume and generate the data on measured volume of fed fuel. Besides, said module (110) can define the volume of consumed fuel, generate, store and control the data on fuel volume measurement. Module (120) can minimize the fuel feed into the engine for fuel consumption limitation at idling without fuel control pedal depression for a preset time interval. Besides, it normalizes the fuel feed at depression of said pedal. Module (130) can generate the data on reduction of the carbon dioxide emission. Module (140) can read off the data on reduction of carbon emission, index the history of economy value conversion and convert the carbon emissions to obtain the carbon credit. Carbon credit control serves can get the ID data on the user, the vehicle ID data, the data on carbon credit authenticity confirmation and the data on carbon emission reduction from appropriate device connected via data communication network. Besides, said server can generate and transfer the data to the carbon elision reduction device. This invention discloses the emitted carbon dioxide volume reduction in the vehicle and conversion of emissions into carbon credit.
EFFECT: decreased ejection of greenhouse gases of vehicles.
11 cl, 8 dwg
FIELD: engines and pumps.
SUBSTANCE: invention can be used in fuel feed systems of internal combustion engines (ICE), preferably of railway vehicles. Proposed device (1) for protection of plants has consumer (3), fuel tank (2), which is connected to consumer (3) by fuel pipeline (6), and installed in fuel pipeline (6) pneumatically actuated emergency shut-off valve (7), which in the locked position locks, while in the opened position opens fuel pipeline (6), herewith emergency shut-off valve (7) without actuation remains in its locked position or is automatically switched over into it. Shut-off valve (7) also has the possibility of actuation by electric or electromagnetic method, for this purpose it is connected to accumulator (17) of energy via electric circuit (18).
EFFECT: higher safety of the fuel feed system.
9 cl, 1 dwg
FIELD: transportation.
SUBSTANCE: invention relates to vehicles with start-stop system. Vehicle comprises engine and controller, which detects engine automatic shutdown locking condition, when estimate value of current, which will be required by vehicle electric loads, including climate control system, during engine automatic shutdown, exceeds threshold value of current. In response to detection of engine automatic shutdown condition controller prevents engine automatic shutdown.
EFFECT: increased driving comfort.
4 cl, 4 dwg
FIELD: engines and pumps.
SUBSTANCE: start locking circuit is designed for an operating tool with an internal combustion engine (20). The internal combustion engine (20) contains a cylinder (21) with a combustion chamber (25) and a control unit (60) to provide the engine operation. When the engine is running the combustion chamber (25) is supplied with combustion air and fuel, wherein the air-fuel mixture in the combustion chamber (25) is ignited with an ignition plug (26). A mode selection switch is designed for actuating the internal combustion engine (20) and has an operating position and a starting position for air-fuel enrichment. The braking unit (19) for locking is coupled with the tool operating body. When in the operating mode, the braking unit (19) for locking locks the operating body with a brake, and when in a standby condition, it unlocks the operating body without actuating the braking system. An operation transmitter is connected with the braking unit (19) for locking to detect the operating mode of the locking braking unit. There is a position sensor in the mode selection switch. The status signal for the operation transmitter (19) of the locking braking unit and the status signal for the position sensor of the mode selection switch are interconnected in such a way that the control unit (60) stops the engine operation in all cases when the mode selection switch is in the starting position, and the locking braking unit (19) is in its standby condition with the braking system off.
EFFECT: avoidance of the engine start with rich mixture without switching the locking braking unit on, as the locking braking unit locks and brakes the tool operating body.
12 cl, 5 dwg
FIELD: engines and pumps.
SUBSTANCE: methods for automatic stop and start of the engine are presented. In one embodiment, the method provides supply of water-containing fluid to closed intake valve of the cylinder when the engine is automatically switched off and idling, and at the subsequent start the supply of fuel into the cylinder after the execution of at least one suction stroke and the next exhaust stroke in the cylinder is performed.
EFFECT: emissions control at automatic engine re-start.
18 cl, 5 dwg
