| 摘要 |
A fuel pump module (10) includes a fuel reservoir (R), fuel pump (26), manifold (32) connected to a pump outlet (30), a fuel line (FS) for supplying fuel to an engine (E), and a return line (FR) returning unconsumed fuel to the reservoir through a return valve (100). An external jet manifold (20) includes a nozzle (68) through which fuel is directed from the manifold, and a venturi (70) by which a low pressure region is created to draw fuel from a fuel tank (T) into the jet manifold where it is entrained and intermixed with other fuel and discharged into the reservoir. The return valve includes a plunger (122) biased to close the return valve when the fuel pump is shut off. High pressure fuel from the fuel pump acts on the plunger when the engine is running to open the valve.
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