| 摘要 |
PURPOSE:To shorten operating time of valve by making a longitudinal hole through a conical valve while providing a pressure chamber at the outercircumference of said valve. CONSTITUTION:A conical valve 8 is provided with a longitudinal hole 19 conducting between the inner chamber 18 at the contactor 5 side and a hole 16 while a pressure chamber 14 is formed at the outercircumference of said valve 8 by means of the conical valve 8, valve seat 9 and guide section 12. Since the force functioning on the conical valve 8 is balanced by the fuel pressure in the pressure chamber 14, influence onto valve function is reduced. Since the pressure chamber 14 is provided at the outercircumference of the conical valve 8, the size of valve is reduced. Consequently the valve member is lightened to shorten the operating time of valve. |
