| 摘要 |
PURPOSE:To improve response property in the control of fuel injection by a method wherein a normally closed type solenoid valve and a normally opened type solenoid valve are arranged in the overflow path of a fuel injection pump while a control unit, controlling both solenoid valves, is provided in the device. CONSTITUTION:Fuel is supplied to a Diesel engine 1 from a fuel injection nozzle 2. The face-cam system distribution type fuel injection pump 10 pressurizes the fuel in a pump chamber 13 by a plunger 12 and sends the fuel into the injection nozzle 2 by pressure. The normally opened type solenoid valve 20 and the normally closed type solenoid valve 30 are arranged in the overflow path 17 of the fuel injection pump 10. A control unit 50 operates the objective fuel injection beginning timing and the objective fuel injection finishing timing of the fuel injection pump 10 to control both of the solenoid valves 20, 30. According to this method, the response property in the control of the fuel injection may be improved. |
