| 摘要 |
PURPOSE:To advance the fuel injection timing during quick acceleration by communicating an oil pressure chamber facing a timer piston through a check valve to the second oil pressure chamber facing a piston driven by a flyweight. CONSTITUTION:A check valve 26 allowing only the flow in an arrow A direction is fitted in an oil pressure chamber 20a facing a timer piston 18, and it is communicated through an oil path 36 to the second oil pressure chamber 35 facing a piston 33 driven by a flyweight 38. When an engine is rapidly accelerated, the oil pressure generated in the second oil pressure chamber is fed to the oil pressure chamber 20a to push the timer piston 18, thus advancing the injection timing. If the acceleration is slow, the timer piston 18 is not moved due to the oil leakage through an orifice 21, thereby the injection timing is not advanced. |
