Patent ID: 6932281

Claim:
An injector for injecting fuel that is at high pressure into the combustion chambers of an internal combustion engine, the injector comprising a control part ( 4 ) guided movably in a housing ( 2 ), which control part is movable vertically up and down, actuator-actuated, in a bore ( 3 ) of the housing ( 2 ) of the injector ( 1 ), the control part ( 4 ) being actuatable by means of an actuator element which moves the control part ( 4 ) into a position that enables the fuel delivery into a nozzle inlet ( 10 , 11 ), the valve chamber ( 8 , 38 ) being opened and closed during the injection phases ( 41 , 42 ) by control edges ( 36 , 37 ) toward the control part, a pressure relief of the injection nozzle system ( 11 , 12 , 34 ) being effected via leak fuel slides ( 13 , 21 ) embodied on the control part ( 4 ), and wherein, during the preinjection phase ( 41 ), the head region ( 6 ) of the control part ( 4 ) is placed in contact with a second control edge ( 37 ) on the housing ( 2 ) of the injector.