Patent ID: 7469683

Claim:
A fuel supply system for delivering fuel from a tank to an engine of a motor vehicle, comprising: a reservoir for receiving fuel from the tank; a jet pump having a supply side inlet receiving fuel during engine operation to power the jet pump, and a jet pump outlet for supplying fuel from the tank to the reservoir; a fuel supply pump for supplying fuel from the reservoir to the engine though a fuel line; a pressure relief valve having an inlet in fluid communication with the fuel line at a location between the fuel supply pump and the engine; and the pressure relief valve having an outlet in fluid communication with the pressurized supply side inlet of the jet pump to provide backpressure on the pressure relief valve outlet during engine operation, the backpressure biasing the pressure relief valve closed; wherein the pressure relief valve is closed during normal engine operation such that no fuel in the fuel line flows though the pressure relief valve to the jet pump supply side inlet to power the jet pump.