会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明专利
    • FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINE
    • JPS54105617A
    • 1979-08-18
    • JP1180078
    • 1978-02-03
    • FUJI HEAVY IND LTD
    • YAMAGUCHI HIROSHINAGANO TOSHIHIROKANEKO HIROAKI
    • F02M59/10F02M59/26F02M59/44
    • PURPOSE:To provide a fuel injection pump for an internal combustion engine in which the speed of a delivery valve is decreased at the end of a descending motion thereof to thereby reduce production of noises and is increased at the beginning of a descending motion of thereof to thereby ensure its sucking-back effect by constituting the pump such that a cam for control of the valve has an appropriate profile which provides such motion of the valve. CONSTITUTION:When a cam 10 is rotated in a counterclockwise direction to raise a plunger 2, a recessed section 1a of the plunger 2 passes by an inlet/outlet hole 5 so that pressure in a chamber 6 is raised and soon exceeds the force of a spring 3 whereupon a delivery valve 4 is raised to thereby effect discharge of fuel. When the plunger 2 begins its descending motion upon a continued rotation of the cam 10, the plunger 2 and the delivery valve 4 are first permitted to rapidly descend due to a steep declination b of the cam 10 thereby to effect an assured sacking- back operation. At the end of a descending motion, the descending speed of the plunger 2 is moderated due to a moderate declination c of the cam 10. After the recessed section 1a of the plunger 2 is displaced below the inlet/outlet hole 5, fuel is sucked in. Feed of fuel is thus effected repetitively in such a sequence of operations as described above.