公开(公告)号：US5477829A

公开(公告)日：1995-12-26

申请号：US287034

申请日：1994-08-08

申请人： Christian V. Hassinger ,  Stephen T. Kempfer ,  Matthew L. Stein ,  Randall A. Betki

发明人： Christian V. Hassinger ,  Stephen T. Kempfer ,  Matthew L. Stein ,  Randall A. Betki

IPC分类号： F02M37/00 ,  F02M37/10 ,  F02M55/02 ,  F02M69/00 ,  F02M69/46 ,  F16K17/196 ,  F02M41/00 ,  F16K17/26

CPC分类号： F02M37/10 ,  F02M69/462 ,  F16K17/196 ,  Y10T137/7779

摘要： A fuel delivery system for a fuel injected automotive internal combustion engine has a fuel pump mounted within a fuel tank for pumping fuel through a fuel line to an engine mounted fuel rail which delivers fuel to a plurality of fuel injectors. Attached on the output side of the fuel pump in the fuel line is a pressure valve for controlling fuel flow from the pump to the rail and from the rail to the pump. The pressure valve has a housing for containing a check valve, which opens upon the fuel pump delivering a predetermined pressure to the fuel line, and a pressure relief valve, which opens to allow fuel flow from the fuel line to the output side of the fuel pump when the fuel line is overpressurized. The relief valve has a predetermined set point greater than that of the check valve is mounted in parallel therewith so that pressure in the fuel line is maintained at an appropriate level during long deceleration periods, as well as when the engine is off.

摘要翻译： 用于燃料喷射的汽车内燃机的燃料输送系统具有安装在燃料箱内的燃料泵，用于将燃料通过燃料管路输送到将燃料输送到多个燃料喷射器的发动机安装的燃料轨道。 在燃料管路中的燃料泵的输出侧附着有用于控制从泵到轨道以及从轨道到泵的燃料流的压力阀。 压力阀具有容纳止回阀的壳体，该止回阀在燃料泵上打开以向燃料管线输送预定压力;以及压力释放阀，该压力释放阀打开以允许燃料从燃料管线流到燃料的输出侧 当燃油管路过压时泵。 安全阀具有大于止回阀的预定设定点与其平行地安装，使得燃料管路中的压力在长时间的减速期间以及当发动机关闭时保持在适当的水平。