Patent ID: 7168414
Filing Date: 2007-01-30
Classification: F02B,F02M

Abstract:
1. A fuel supply system for a marine engine comprising: a vapor separator for receiving liquid fuel from a fuel tank and collecting vapors given off from the fuel, said vapor separator including a housing having an interior and an exterior; a high pressure pump directly connected to said exterior of said vapor separator housing, said high pressure pump having a fuel inlet extending through said housing for withdrawing liquid fuel from said vapor separator and a fuel outlet; a fuel delivery line communicating with said fuel outlet for delivering fuel under pressure to an engine injector system; and characterized by a bypass line extending between said fuel delivery line and said vapor separator for returning excess fuel to said vapor separator whereby fuel in excess of the demands of the engine injector system is returned to said vapor separator prior to reaching the engine injector system and thereby eliminating the need to recirculate unneeded fuel through the engine injector system, said bypass line including a pressure regulator having a closed condition responsive to a predetermined pressure differential between said vapor separator and said fuel delivery line for interrupting fuel flow through said bypass line; said high pressure pump, said bypass line and said regulator each being integrally supported on said housing exterior and directly connected together as a rigid, unitary structure.