초록 ▼

For a fuel pump mounted within a module in a vehicle fuel tank, a stand pipe is provided in communication at its upper end with a return fuel reservoir and at its lower end with the inlet of the fuel pump to deliver fuel from the return fuel reservoir when the level of fuel in the reservoir rises ab

For a fuel pump mounted within a module in a vehicle fuel tank, a stand pipe is provided in communication at its upper end with a return fuel reservoir and at its lower end with the inlet of the fuel pump to deliver fuel from the return fuel reservoir when the level of fuel in the reservoir rises above the upper end of the stand pipe. The return fuel reservoir has an inlet in communication with a fuel return line through which excess fuel in the fuel system is delivered to the return fuel reservoir. This "weathered" return fuel is delivered to the fuel pump inlet through the stand pipe when the level of fuel in the reservoir is sufficiently high to prefer use of the weathered return fuel by the fuel pump.

대표청구항 ▼

[ We claim:] [1.] A fuel pump module constructed to be disposed in a vehicle fuel tank comprising:a housing constructed to be disposed in the fuel tank;a fuel reservoir defined by the housing;an electric motor fuel pump carried by the housing within the fuel tank and outside of the fuel reservoir an

[ We claim:] [1.] A fuel pump module constructed to be disposed in a vehicle fuel tank comprising:a housing constructed to be disposed in the fuel tank;a fuel reservoir defined by the housing;an electric motor fuel pump carried by the housing within the fuel tank and outside of the fuel reservoir and having a fuel inlet through which fuel is drawn and a fuel outlet through which fuel is supplied to a fuel line under pressure;a return fuel line in communication with the fuel system downstream of the fuel pump at one end and with the fuel reservoir at its other end to return excess fuel delivered from the fuel pump to the fuel reservoir;a stand pipe having an upper end in communication with the interior of the fuel reservoir and having a lower end in communication with the upper end and with the exterior of the fuel reservoir whereby when the level of fuel in the fuel reservoir is above the height of the upper end of the stand pipe fuel flows through the stand pipe to the exterior of the fuel reservoir and to the inlet of the fuel pump whereupon it may be drawn into the fuel pump through the fuel inlet.