Patent ID: 6364630
Filing Date: 2002-04-02
Classification: F04C

Abstract:
A vane pump, having an inlet for receiving fuel and an outlet from which fuel is supplied, comprising:a generally cylindrical member; a driven rotor arranged within the cylindrical member; and a closure member, the cylindrical member and the closure member co-operating to define a recirculation passage interconnecting the outlet and the inlet, the output pressure of fuel discharged from the pump being regulated by a resiliently biased valve controlling the flow of fuel through said recirculation passage, wherein the cylindrical member has a first channel defined therein co-operating with a second channel defined in the closure member, the first and second channels defining the recirculation passage, wherein the recirculation passage is defined by a channel formed in the cylindrical member, the closure member cooperating with the cylindrical member to define an inner surface of the recirculation passage.