초록 ▼

A fuel pump with an inlet through which fuel is drawn from a fuel tank and an outlet through which fuel is discharged under pressure to an operating engine of a vehicle has an inlet throttle valve actuated by the pressure of the pump outlet fuel to at least partially restrict the flow of fuel throug

A fuel pump with an inlet through which fuel is drawn from a fuel tank and an outlet through which fuel is discharged under pressure to an operating engine of a vehicle has an inlet throttle valve actuated by the pressure of the pump outlet fuel to at least partially restrict the flow of fuel through the inlet of the fuel pump and thereby reduce the flow rate of fuel discharged from the fuel pump when the fuel pump is delivering more fuel than is being consumed by the engine. The valve is preferably received within an inlet module between the fuel tank inlet and the fuel pump inlet. Preferably, the valve is slidably received in a passage in the module and actuated by a diaphragm received in the passage and displaceable by the pressure of the pump outlet fuel in response to engine fuel demand.

대표청구항 ▼

[ We claim:] [1.] A fuel pump module constructed to be received within a fuel tank comprising:a fuel pump having a pump inlet through which fuel is drawn into the fuel pump and a pump outlet through which fuel is delivered from the fuel pump;a valve connected with the pump inlet and constructed to c

[ We claim:] [1.] A fuel pump module constructed to be received within a fuel tank comprising:a fuel pump having a pump inlet through which fuel is drawn into the fuel pump and a pump outlet through which fuel is delivered from the fuel pump;a valve connected with the pump inlet and constructed to control the flow of fuel through the pump inlet to the pump, the valve being moveable between a fully open position permitting a substantially free flow of fuel through the fuel pump inlet and toward a fully closed position at least substantially restricting fuel flow through the fuel pump inlet; andan outlet pressure passage in communication with the pump outlet adjacent one end and with the valve adjacent its other end whereby the outlet pressure passage communicates the pressure of fuel from the fuel outlet with the valve to displace the valve to vary and control the flow of fuel into the inlet of the operating fuel pump to control the rate of flow of fuel from the outlet of the fuel pump.