| 摘要 |
PURPOSE:To enhance reliability and reduce the manufacturing cost by installing a throttle member on the fuel exhaust side and using a solenoid operated valve, and thereby providing easy adjustability for the injection timing, rate and pressure without requiring standstill of the engine. CONSTITUTION:When a solenoid operated valve 7 is operated, the fuel in No.1 pressure source 1 will flow from a fuel conduit 50 to an oil supply conduit 38 via said valve 7, and then be fed to a fuel valve 3. The fuel sent to a pump chamber 33 presses a pump piston upward, and this rising motion will allow the working oil put aside in a servo pressure chamber 21 to flow back to a control conduit 49 from a control hole 15 via throttle member 19, to be sent further to a return conduit 76 and a tank 58. The throttle member 19 restricts the filling speed of the fuel into the pump chamber 33 to serve control of the filling amount of the fuel and enhancement of the accuracy for amount adjustment. |
