Patent ID: 6640787
Filing Date: 2003-11-04
Classification: F02M

Abstract:
An electronically controlled fuel injection device comprising:a positive displacement, electromagnetically driven pump for use in pumping fuel under pressure from a fuel tank; an inlet orifice nozzle operably coupled to said electromagnetically driven pump and having an inlet nozzle orifice part arranged to allow passage therethrough of the fuel pumped by said electromagnetically driven pump; an outlet orifice nozzle having an intake side operably coupled to said inlet orifice nozzle and an output side to be coupled to a return line for return of fuel to the fuel tank, said outlet orifice nozzle comprising an outlet nozzle orifice part arranged to allow a specified amount of the fuel that has passed through said inlet nozzle orifice part to pass from said intake side out through said output side to be returned to the fuel tank; an injection nozzle, operably coupled to said inlet orifice nozzle and arranged to be coupled to an intake passage of an engine, so as to inject an amount of fuel into the intake passage of the engine equal to a difference between an amount of the fuel that has passed through said inlet nozzle orifice part and the specified amount of the fuel that has passed out through said output side to be returned to the fuel tank; and a control arrangement operably coupled to said electromagnetically driven pump to control said electromagnetically driven pump in response to a cycle of the engine.