发明授权
US07506636B2 Check value placement in an electronic returnless fuel system 有权
在电子无返回燃油系统中检查阀门位置

Check value placement in an electronic returnless fuel system
摘要:
A fuel pump module within a fuel tank employs at least one fuel pump, while in the case of additional fuel pumps, a manifold receives all pumped fuel and directs it into a surrounding fuel filter within a filter case. A check valve is adjacent the filter case at a first location and a pressure regulator is adjacent the check valve. With the check valve located between the filter case and the pressure regulator, high fuel pressures may be maintained in the engine supply line when the engine is shut off, while during engine operation the pressure regulator may relieve excessive fuel pressure and deliver fuel to the engine through an engine supply line. A jet pump supply line exits the filter case at a second case location and supplies fuel to one or more jet pumps, such as a fuel pump module reservoir jet pump.
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