Patent ID: 6260522
Filing Date: 2001-07-17
Classification: F01L

Abstract:
A device for actuating a gas exchange valve of an internal combustion engine having a cylinder head with gas exchange channels controlled by said gas exchange valves, said actuating device including an electromagnetic actuator floatingly supported in said cylinder head by a play-compensation structure and comprising a gas exchange control valve with a valve shaft arranged in a gas exchange channel so as to normally close the gas exchange channel, axially spaced valve opening and valve closing magnets having opposite pole faces, an armature disposed between said opposite pole faces so as to be axially movable therebetween and being operatively connected to said valve shaft for opening and closing said gas exchange control valve, a valve spring support plate supported for movement with said gas exchange control valve, a valve closing spring supported on said actuator at one side of said spring support plate for biasing said gas exchange control valve in a valve closing direction, a valve opening spring supported on said actuating device at the opposite side of said spring support plate and biasing said gas exchange valves in a valve opening direction against the force of said valve closing spring and means for biasing said actuating device in a valve closing direction.