Valve drive for lifting cylinder engines has at least one valve with non-circular, especially elliptical, valve disc with sealing surface preferably formed at right angles to valve shaft central axis

摘要

The device has at least one cylinder with at least one lift valve per cylinder for closing inlet and exhaust openings under control of a camshaft controller with transfer elements or alternative control parts, especially electromechanical or electrohydraulic control parts. At least one valve has a non-circular, especially elliptical, valve disc (7.1) on which a sealing surface is formed preferably perpendicular to the valve shaft's central axis.