Patent ID: 6035830
Filing Date: 2000-03-14
Classification: F02B,F02D,F02M,Y02T

Abstract:
A fuel injection system for supplying fuel from a fuel source to an internal combustion engine having at least one combustion chamber, said fuel injection system comprising at least one fuel injector for supplying fuel to said combustion chamber of said engine, a first, electrical fuel pump for supplying fuel from said fuel source to a second higher pressure, mechanical pump driven by said engine for delivering fuel at high pressure to at least one fuel rail arranged to deliver fuel under high pressure to said at least one fuel injector, a vapor separator for separating vapor from fuel passing through said fuel injection system, a first pressure regulator for regulating the pressure of fuel supplied from said electrical fuel pump to said mechanical pump by delivering fuel to said vapor separator, means for detecting a pressure of the fuel in said fuel rail, and means for diverting a portion of the fuel pumped by said mechanical pump away from said fuel rail based upon said fuel pressure detected by said means for detecting.