| 摘要 |
PURPOSE:To protect a fuel injecting apparatus against heat and vibration, by disposing an electromagnetic changeover valve at a position spaced away from the cylnder head. CONSTITUTION:An electromagnetic changeover valve 2 is connected to a fuel control valve 3 via control oil passages 7, 8. An injection pulse generator 1 is furnished with signals relating to the engine speed, crank angle, etc. and produces a proper injection pulse signal E for driving the electromagnetic changeover valve 2. When the injection pulse signal E is applied to the changeover valve 2, control oil supplied from a high-pressure control oil source via a control oil supply passage 10 is supplied to a pressure chamber 12 formed on the lower side of a piston 13 in an actuator section 11 of the fuel control valve 3 via the control oil passage 7, so that the piston 13 is moved upward. At the same time, control oil in a pressure chamber 15 is returned to a control oil tank via the control oil passage 8 and a control oil return passage 16. |
