Patent ID: 7100579

Claim:
Fuel injection equipment comprising: an injector comprising a plunger part, an injection nozzle part and a fuel injection passage for communicating between said plunger part and said injection nozzle part; a fuel supply part for supplying fuel to said injector; a fuel passage for communicating between said fuel supply part and said injector; a main electromagnetic valve provided in said fuel passage; an overflow passage for use in returning fuel not injected from said injector to said fuel supply part; a secondary electromagnetic valve provided in said overflow passage; and an orifice of variable opening area provided in said overflow passage, said orifice and said second electromagnetic valve being operable to suppress a fuel injection pressure by the returning of the fuel through said overflow passage via said orifice and said secondary electromagnetic valve during a period from the time beginning when said main electromagnetic valve begins to shift from an opened state to a closed state and ending when said secondary electromagnetic valve is closed.