Patent ID: 6758414
Filing Date: 2004-07-06
Classification: F02M

Abstract:
A fuel injection device for an internal combustion engine, comprising, a fuel pump (10) for each cylinder of the engine, which fuel pump has a pump piston (18) that is driven in a stroke motion by the engine and delimits a pump working chamber (22),a fuel injection valve (12) connected to the pump working chamber and constituting a structural unit with the fuel pump (10), the injection valve having an injection valve member (28), which controls at least one injection opening (32) and which can be moved in the opening direction (29) counter to a closing force by the pressure prevailing in a pressure chamber (40) connected to the pump working chamber (22), a first electrically actuated control valve (60) which at least indirectly controls a connection of the pump working chamber (22) to a discharge chamber (24), a second electrically actuated control valve (70) which controls a connection of a control pressure chamber (52) of the fuel injection valve (12) to the pump working chamber (22), the pressure prevailing in the control pressure chamber (52) acting at least indirectly on the injection valve member (28) in the closing direction, the control valves (60, 70) being actuated by a shared actuator (64), the actuator (64) controling the pressure in an actuator pressure chamber (66) and the two control valves (60, 70) each having a valve member (61, 71) that is acted on by the pressure prevailing in the actuator pressure chamber (66).