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公开(公告)号:US06837219B2
公开(公告)日:2005-01-04
申请号:US10357668
申请日:2003-02-04
申请人: George York , Paul Meyer , Martin Walsh
发明人: George York , Paul Meyer , Martin Walsh
CPC分类号: F02M63/0043 , F02M37/0029 , F02M37/0052 , F02M69/54 , F02M2200/44 , F16K17/0406
摘要: A ported pressure relief valve (10) used in an automotive fuel system (F) includes an unrestricted constant bleed orifice (32) for routing pressurized fuel from a fuel pump (P) back to a fuel source (T, M) when an engine (E) is running. A check valve (30) prevents flow from a fuel system back to the fuel source when the engine is off, so to retain sufficient pressure in the delivery system that the engine will readily start when cranked. A pressure relief valve (50) drains fuel from the delivery system back to the source of fuel in response to a pressure build up in the fuel delivery system above a predetermined pressure level so to prevent an overpressure condition which would otherwise damage the fuel delivery system.
摘要翻译: 用于汽车燃料系统(F)中的便携式减压阀(10)包括一个不受限制的恒定泄放孔(32),用于在发动机(32)内将加压燃料从燃料泵(P)引回燃料源(T,M) (E)正在运行。 当发动机关闭时,止回阀(30)防止从燃料系统流向燃料源,以便在发动机中保持足够的压力,使发动机在起动时容易起动。 压力释放阀(50)响应于燃料输送系统中的压力积聚在预定压力水平以上而将燃料从输送系统排出回到燃料源,以防止否则会损坏燃料输送系统的过压状态 。