| 摘要 |
PURPOSE:To keep the inside cylinder pressure at an appropriate value to increase the durability and reliability of the unit by controlling the quantity of opening or closing a timer control valve in accordance with output signals from a suction temperature sensor and a boost pressure sensor which are provided in the suction system of a turbo supercharger. CONSTITUTION:An electronic timer 2 which controls the fuel injection time period of a fuel injection pump 1 is controlled by the pressure of oil supplied from an oil pan 4 by means of an oil pump 3. A solenoid type three-way valve 5 is provided in an oil path through which the oil pressure is supplied. The valve 5 is controlled to open or close by a control circuit 6 in accordance with the engine rotational speed and the engine load. In this case, a suction air temperature sensor 11 and a boost pressure sensor 12 are provided in the suction manifold 10 of the engine 7. These sensors 11 and 12 are connected to a correction circuit 13 provided with in the control circuit 6. When the suction air temperature is low or the boost pressure is high, a power supply time control signal for the three-way valve 5 is corrected to a minus value and the fuel injection is delayed. |
