Control device for a high-pressure injection nozzle for liquid injection media

A control device for a high pressure injection nozzle for a liquid injection medium, which is supplied to the nozzle under high pressure to be metered by the nozzle with regard to injection timing, injection duration and injection quantity, particularly an actuating device for a high pressure fuel injection nozzle for internal combustion engines, said control device comprising:

• a housing, an actuating magnet structure disposed in said housing and including a magnet coil, an armature disposed in said housing so as to be movable relative to said magnet coil, a valve actuating bolt engaged by said armature and being spring biased to a seated position in which said injection nozzle is closed but being actuated by said armature upon energization of said magnet coil to an unseated position, in which said injection nozzle is opened for the release of said liquid injection medium from said injection nozzle, said armature being movably mounted on said armature bolt, and a resiliently supported mass body disposed adjacent said armature at the side thereof remote from said magnet coil so that, when, upon de-energization of said magnet coil, said bolt reaches its seated position, said armature is free to continue to move for engagement with said mass body to which the mass impulse forces of the armature are transferred whereby the mass forces generated by the bolt are reduced and any movement of the armature is damped.