Patent ID: 6843429

Claim:
A device for injecting fuel into the combustion chambers of an internal combustion engine, comprising an injector ( 3 ) enclosed by an injector housing ( 2 ) and including a control chamber ( 12 ) that can be acted on by a control volume and a nozzle chamber ( 10 ), control valves ( 14 , 15 ) for increasing/relieving the pressure in the nozzle chamber ( 10 ) of the injector ( 3 ) and in the control chamber ( 12 ) of the injector ( 3 ), the control valves ( 14 , 15 ; 35 ) being disposed in parallel to one another and hydraulically coupled to one another without side effects by means of a coupling chamber ( 11 ), and an actuator ( 13 ) that can be switched into different stroke levels for actuating the control valves ( 14 , 15 ), wherein the first of the control valves ( 14 ) is embodied as a 2/3-port directional-control valve that can be moved into three switched positions ( 14 . 1 , 14 . 2 , 14 . 3 ).