Patent ID: 6889657

Claim:
A fuel injection device for an internal combustion engine, the device comprising a high-pressure pump ( 14 ; 114 ; 314 ) that supplies fuel to a reservoir ( 16 ) connected to injectors ( 18 ) disposed in the cylinders of the engine, a fuel-supply pump ( 10 ) that delivers fuel from a fuel tank ( 12 ) to the suction side of the high-pressure pump ( 14 ; 114 ; 314 ), an electrically actuated control valve ( 54 ; 254 ; 354 ; 454 ; 554 ; 654 ) for adjusting the quantity of fuel that the high-pressure pump ( 14 ; 114 ; 314 ) delivers to the reservoir ( 16 ), the control valve ( 54 ; 254 ; 354 ; 454 ; 554 ; 654 ) being disposed on the pressure side of the high-pressure pump ( 14 ; 114 ; 314 ), and means for switching the control valve ( 54 ; 254 ; 354 ; 454 ; 554 ; 654 ) between a first switched position, in which the pressure side of the high-pressure pump ( 14 ; 114 ; 314 ) is closed off from a pressure relief region, and a second switched position, in which the pressure side of the high-pressure pump ( 14 ; 114 ; 314 ) is connected to the pressure relief region, wherein the control valve ( 54 ) is embodied as a 3/2-way valve, which, in a first switched position, connects the pressure side of the high-pressure pump ( 14 ) to the reservoir ( 16 ) and closes it off from the pressure relief region, and in a second switched position, connects the pressure side of the high-pressure pump ( 14 ) to the pressure relief region and closes it off from the reservoir ( 16 ).