Electromagnetic actuator for actuating a lifting valve of an internal combustion engine

摘要

An electromagnetic actuator for actuating a lifting valve of an internal combustion engine includes two magnetic coils and an armature moved in oscillation between the two magnetic coils. The armature has an armature shank with an end portion. The armature shank is guided in the actuator. The end portion is connected to and acts upon the valve shank of the lifting valve. At least portions of the armature shank are of a material having a specific gravity substantially lower than that of steel.