Abstract: A device for operating a gas shuttle valve through an electromagnetic actuator secured and mounted in a component which has an opening and a closing magnet with an axially displaceable armature between the opening and closing magnet. The armature acts through the use of an armature plunger in conjunction with a spring system on a valve stem. A play-compensation element is arranged between the armature plunger and the valve stem.

Abstract: In a variable control arrangement in an internal combustion engine including intake and exhaust valves, a valve operating mechanism with a first camshaft controlling the intake valve opening times and a second camshaft controlling the intake valve closing times, a four gear coupler drive mounted on the first and second camshafts for controlling their relative angular positions, a control wheel supported coaxially with one of the camshafts and connected to the coupler drive for adjusting the relative angular position of the first and second camshafts, and a control arrangement including a control motor for operating the control wheel, the coupler drive with the control wheel and the valve operating mechanism are combined in a camshaft bearing housing assembly which is mounted on the cylinder head.

Abstract: In a variable valve control for an internal combustion engine with a cylinder head having a first camshaft controlling the opening of the engines intake valves and a second camshaft for controlling the closing of the engines intake valve, a control drive for driving the second camshaft at a variable angular position relative to the first camshaft so as to permit controlling the intake valve opening duration, a control wheel with an eccentric collar for actuating the control drive and a control motor for operating the control wheel, all mounted on a bearing housing supporting the camshafts, the control wheel is mounted on the bearing housing sidewardly displaced from the control drive and the control motor has a drive shaft which extends transversely to the axis of the control wheel and is supported on the camshaft bearing housing.

Abstract: In a variable valve timing mechanism for an internal combustion engine with exhaust valves operated by an exhaust camshaft and intake valves operated by two intake camshafts of which one is driven by the exhaust camshaft by way of a phase controller disposed at one end of one of the intake camshafts and controls the valve openings time and the other is driven by the one intake camshaft by way of a coupler drive which is disposed at the opposite end of the one intake camshaft and controls the valve closing times.