Patent ID: 6546917
Filing Date: 2003-04-15
Classification: F02M,F04B

Abstract:
A variable delivery fuel supply device comprising:fuel injection valves respectively for injecting a fuel to cylinders of an internal combustion engine; a delivery pipe for supplying a pressurized fuel to said fuel injection valves; and a fuel pump for taking a fuel from a intake passage through an intake valve into a pressurization chamber during an intake stroke, for pressurizing said fuel and for discharging the pressurized fuel through a discharged valve to said delivery pipe during a discharge stroke by reciprocating movement of a plunger in each cylinder from a bottom dead point to a top dead point; wherein the pressure in said pressurization chamber is relieved at a position set to a predetermined valve before reaching the top dead point in the course of the discharge stroke in which the plunger of said fuel pump moves from the bottom dead point to the top dead point, regardless of a fuel pressure in the delivery pipe.