FIELD: mechanical engineering; gasoline engines.
SUBSTANCE: proposed gasoline internal combustion engine contains at least one cylinder with piston, connecting rod, crankshaft with its speed sensor, cylinder head with intake and exhaust valves and intake manifold with throttle valve. Vacuum sensor is installed after throttle valve in intake manifold. Engine is furnished with engine temperature transmitter, ambient temperature and pressure transmitters, knocking sensor, throttle valve drive connected with engine power control device (accelerator pedal), accelerator pedal position pickup, fuel injection device, spark plug and electronic control unit. Inputs of electronic control unit are connected with vacuum sensor, engine temperature transmitter, ambient temperature and pressure transmitters, knocking sensor, crankshaft speed sensor and accelerator pedal position pickup. Output of electronic control unit is connected with fuel supply device and spark plug. Engine is furnished with vacuum pump with drive. Throttle value has additional drive, input of vacuum pump communicates with engine intake manifold, drive of vacuum pump and additional drive of throttle valve are connected with outputs of electronic control unit which forms signal to drive of vacuum pump to cut in said pump after switching on the ignition, thus providing removal of air from intake manifold when fuel injection device and throttle valve are closed. When vacuum in intake manifold, depending on compression ratio of engine, its temperature and ambient temperature and pressure is reached, electronic control unit forms signals by signal from vacuum sensor to starter for cranking the shaft, to fuel injection device, throttle valve and spark plug to provided delivery of air, fuel and spark to engine cylinder. In period from beginning of engine cranking to moment of engine of engine starting, electronic control unit forms signal to throttle valve drive, thus limiting its turning and providing required level of vacuum in intake manifold. After starting of engine, electronic control unit forms signal to cut out vacuum pump. At operation from idling to maximum speed, depending on compression ratio of engine, its temperature and ambient temperature and pressure, crankshaft speed, and gasoline octane rating, electronic control unit, by signals from accelerator pedal position pickup and vacuum sensor forms signal to additional drive of throttle valve to change angle of opening of throttle valve and limit filling of cylinder with air.
EFFECT: improved reliability of starting and operation of engine under conditions up to maximum engine speed.
5 cl, 1 dwg
