Method for controlling the end position of the gas exchange valves of internal combustion piston engine which is operated by an electromagnetic actuator

摘要

(57) in order to operate gas exchange valves of internal combustion piston engine, SUMMARY The present invention is directed to a method of controlling an electromagnetic actuator. The actuator comprises a two electromagnets which are spaced apart from each other, between the electromagnet, between the pole faces of the two electromagnets an armature which acts on the gas exchange valve against the force of the return spring at least one is guided reciprocally between an open position and a closed position of the gas exchange valve and a stroke set in, current is supplied alternately received by the electromagnet through a control device, magnetic poles from the other pole face of one stroke of the armature during movement of the plane is detected via a sensor device, so as to move at a speed approaching settable "zero" in a distance range for the pole surface of the holding electromagnet when the armature, the armature energization of the electromagnet is controlled through a control unit received in dependence on the actual value detection of the stroke, the armature is to be float held at a small distance from the pole face, holding the energization of the electromagnet received at the end of the stroke It is performed.