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公开(公告)号:US06776143B2
公开(公告)日:2004-08-17
申请号:US10372469
申请日:2003-02-21
申请人: Scott A. Goodenough , Tim D. Haas , Thomas K. Rapp , Aaron M. Jacobs , Michael T. Dillane , Gregg R. Spoolstra , Daren N. Bolbolan
发明人: Scott A. Goodenough , Tim D. Haas , Thomas K. Rapp , Aaron M. Jacobs , Michael T. Dillane , Gregg R. Spoolstra , Daren N. Bolbolan
IPC分类号: F02M3704
CPC分类号: F02M59/442 , F02M57/023 , F02M59/366 , F02M59/44 , F02M59/466
摘要: A fuel injector pump in a direct-injection fuel delivery system for an internal combustion engine including a solenoid valve for controlling transfer of fluid from a high pressure chamber to a fuel injector nozzle. A supply passage and a return passage provide a fuel flow circuit for the fuel delivery system, the high pressure chamber being defined in part by a camshaft-driven plunger. An independent fuel leak flow path is provided to accommodate fuel leakage past a plunger of the pump, the fuel leak flow path extending to a zero pressure fuel tank.
摘要翻译: 一种用于内燃机的直接喷射燃料输送系统中的燃料喷射泵,包括用于控制流体从高压室转移到燃料喷射器喷嘴的电磁阀。 供应通道和返回通道为燃料输送系统提供燃料流动回路,高压室部分由凸轮轴驱动的柱塞限定。 提供独立的燃料泄漏流动路径以适应通过泵的柱塞的燃料泄漏,燃料泄漏流动路径延伸到零压力燃料箱。