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A fuel delivery system for internal combustion engines in which an electric-motor fuel pump supplies fuel under pressure to a fuel injector carried by the engine. An engine air intake manifold is likewise carried by the engine and supplied with combustion air. A pressure sensor is responsive to a pr

A fuel delivery system for internal combustion engines in which an electric-motor fuel pump supplies fuel under pressure to a fuel injector carried by the engine. An engine air intake manifold is likewise carried by the engine and supplied with combustion air. A pressure sensor is responsive to a pressure differential between the fuel injector and air manifold for controlling a pulse-width modulated drive signal applied to the fuel pump motor.

대표청구항 ▼

A fuel delivery system for an internal combustion engine that includes a fuel supply with a fuel pump responsive to application of electrical power for delivering fuel under pressure, an engine manifold, fuel delivery means coupled to said fuel supply for controlled delivery of fuel from said supply

A fuel delivery system for an internal combustion engine that includes a fuel supply with a fuel pump responsive to application of electrical power for delivering fuel under pressure, an engine manifold, fuel delivery means coupled to said fuel supply for controlled delivery of fuel from said supply to said manifold, means for returning excess fuel from said fuel delivery means to said supply, a body of heat conductive construction having a fuel passage extending therethrough connected in said fuel-returning means, and means for applying electrical power to said pump comprising: orifice means in said fuel-returning means for restricting flow of fuel therethrough and thereby developing a back pressure of fuel in said fuel-returning means, pressure sensing means coupled to said fuel-returning means between said orifice means and said fuel delivery means for supplying an electrical pressure signal as a function of said back pressure, and means for applying electrical power to said pump as an inverse function of said pressure signal, said power-applying means including said pressure sensing means and said orifice being mounted on said body such that fuel passing through said body cools said power-applying means.