High-Pressure Fuel Supply Pump
    1.
    发明申请
    High-Pressure Fuel Supply Pump 审中-公开
    高压燃油泵

    公开(公告)号:US20080056914A1

    公开(公告)日:2008-03-06

    申请号:US11835544

    申请日:2007-08-08

    IPC分类号: F04B49/24

    摘要: A high-pressure fuel supply pump having a fuel relief path for connecting a high-pressure fuel path downstream of a discharge valve for discharging fuel pressurized in a pressurizing chamber to a low-pressure fuel path upstream of an inlet valve or the pressurizing chamber, a check valve being provided in the fuel relief path as a relief valve for allowing the fuel to flow only to the low-pressure fuel path or the pressurizing chamber, wherein an energy attenuating mechanism is provided in a discharge path on a side facing the discharge valve upstream of the relief valve in the fuel relief path so as to prevent an instantaneous pressure rise caused in the discharge path from propagating to the relief valve.

    摘要翻译: 一种高压燃料供给泵,其具有燃料排出路径,用于将用于将在加压室中加压的燃料排放到入口阀或加压室上游的低压燃料路径的排出阀下游的高压燃料路径连接, 在所述燃料排出路径中设置有止回阀,作为使所述燃料仅流向所述低压燃料路径或所述加压室的安全阀,在所述排气路径的与所述排出口相对的一侧的排出路径中设置有能量衰减机构 在燃料排放路径中的安全阀上游的阀,以防止在排放路径中引起的瞬时压力升高传播到安全阀。