Abstract: A fuel injection system, having a fuel injection valve and a control valve, which control valve has a control valve member that is longitudinally displaceable in a control valve bore. A control valve sealing face is embodied on the control valve member; it cooperates with a control valve seat and thus controls the communication between a first pressure space and a second pressure space; the first pressure space communicates with a high-pressure collection chamber. In a valve body, a bore is embodied in which a pistonlike valve needle, with its end toward the combustion chamber, controls the opening of at least one injection opening by executing a longitudinal motion in response to the pressure in a pressure chamber; the pressure chamber communicates with the second pressure space via an inlet conduit.

Abstract: A fuel injection system, having a fuel injection valve (15) and a control valve (50), which control valve (50) has a control valve member (54) that is longitudinally displaceable in a control valve bore (52). A control valve sealing face (55) is embodied on the control valve member (54); it cooperates with a control valve seat (56) and thus controls the communication between a first pressure space (57) and a second pressure space (58); the first pressure space (57) communicates with a high-pressure collection chamber (10). In a valve body (25), a bore (30) is embodied in which a pistonlike valve needle (32), with its end toward the combustion chamber, controls the opening of at least one injection opening (38) by executing a longitudinal motion in response to the pressure in a pressure chamber (31); the pressure chamber (31) communicates with the second pressure space (58) via an inlet conduit (28).