Patent ID: 6067966
Filing Date: 2000-05-30
Classification: F02B,F02D,F02F,F02M,Y02T

Abstract:
A fuel supply system for supplying fuel from a fuel source to an engine powering an outboard motor, the engine having at least one combustion chamber, said fuel supply system comprising a vapor separator to which fuel is delivered from the fuel source for separation of vapor from the fuel, a pre-pressurizing pump for pressurizing fuel from the separator and delivering said fuel at a first pressure above a pressure of said fuel within said vapor separator to a high pressure pump, said high pressure pump pressurizing said fuel to a pressure above said first pressure and delivering said fuel to a fuel rail through which fuel is delivered to said fuel injector for delivery into said combustion chamber, a return line extending from said fuel rail to said vapor separator for returning fuel delivered to said fuel rail but not delivered by said fuel injector back to said vapor separator, an adjustment valve for regulating the flow of fuel through said return line and maintaining the fuel in said fuel rail at high pressure, and further including a fuel cooler positioned between said adjustment valve and said vapor separator along said return line for cooling said fuel passing therethrough.