| 摘要 |
PURPOSE:To operate an engine always at a minimum specific fuel consumption, by providing combustion pressure sensors in a multicylinder engine, detecting the indicated mean effective pressure of each cylinder, and controlling operation of a motor generator on the basis of the indicated mean effective pressure of each cylinder. CONSTITUTION:Combustion pressure sensors 3 are attached to respective cylinders of a multi-cylinder engine 1 which is connected mechanically with a motor generator 10 via a power mixing means 13, and the outputs of these combustion pressure sensors 3 are supplied together with the output of a crank angle sensor 2 to a control circuit 6 via an amplifier 4 and a Pi-meter 5. The control circuit 6 compares the indicated mean effective pressure of each cylinder given from the Pi-meter 5 with the pre-stored data relating to the relationship between the indicated mean effective pressure and the specific fuel consumption of an engine and controls fuel injection valves 7 and a throttle actuator 9 to keep the specific fuel consumption always at a minimum level. In case that the engine output is not sufficient, the motor generator 10 is operated as a motor by means of a switching circuit 11. On the other hand, in case that the engine output is excessive, the motor generator 10 is operated as a generator. |
