Patent ID: 6397822
Filing Date: 2002-06-04
Classification: F02M,Y02T

Abstract:
An integrated fuel system unit for use with an internal combustion engine comprising:a multi-stage fuel pump; fuel delivery means for delivering fuel from a source thereof to a first stage of the pump; a fuel filter interposed between the first stage of the pump and a second stage thereof, fuel pumped from the first stage of the pump being delivered to the fuel filter and flowing therethrough to the second stage of the pump; a fuel outlet from the pump by which fuel discharged from the pump is delivered to the engine; a pressure regulator in the fuel outlet for returning a portion of the fuel which would otherwise be delivered to the engine to an inlet of the fuel filter when the fuel pressure sensed by the regulator exceeds a predetermined pressure, for the returned fuel to be recycled back through the fuel pump with the fuel flowing from the first stage; means for cooling the fuel as it flows to the pump thereby to facilitate engine starting and prevent vapor lock; and, an upper body portion in which the fuel pump is housed, and an insert attached to a lower end portion of the body portion, a lower end portion of the insert defining a cavity in which the fuel filter is housed.