Patent ID: 7096854

Claim:
A fuel injection device ( 1 ) for internal combustion engines, comprising a plurality of injection valves ( 5 ) each provided in an injection line ( 4 ) for the fuel, each injection valve ( 5 ) having a nozzle chamber ( 12 ) and a control chamber ( 15 ) that are each connected to the injection line ( 4 ), a valve element ( 7 ) that controls the injection openings ( 11 ) of the nozzle chamber ( 12 ) and that can be actuated by means of a first control surface ( 13 ) disposed in the nozzle chamber ( 12 ) and acting in the valve opening direction, and by means of a second control surface ( 14 ) disposed in the control chamber ( 15 ) and acting in the valve closing direction, an on-off valve ( 29 ) for switching back and forth between a lower injection pressure and a higher injection pressure, a valve device ( 18 ) for controlling the pressure prevailing in the control chamber ( 15 ), and a shared actuator ( 30 ) for the valve device ( 18 ) and the on-off valve ( 29 ), the valve device ( 18 ) including means such that upon travel of shared actuator ( 30 ) by a chosen distance (Si) the valve device ( 18 ) opens, and upon travel of a second, greater distance (S 3 ), the valve device ( 18 ) closes, the actuation distance (S 2 ) of the shared actuator ( 30 ) required to open the on-off valve ( 29 ) being greater than the actuation distance (S 1 ) required to open the valve device ( 18 ) and less than the actuation distance (S 3 ) required to close the valve device ( 18 ).