Schaeffler Technologies Ag & Co .kg

Lu Zhu

Donald R Haefner

A coupler plate for a multi-valve system of an internal combustion engine. The coupler plate includes an elongated planar body and through holes on opposite ends. The through holes may be either closed or open ended, and of sufficient size to insert valve stems of valves for an internal combustion engine valve system.

Coupling plate between valves

The mechanical variable cam timing device has a camshaft connector, a sprocket, a sprocket ring and a connector ring, all of which have teeth with slanted side walls that mate to form a circumferential ring. The sprocket ring and the connector ring move axially so as to shift the spacing between the teeth and provide for a phase shift.

Mechanically variable cam timing device

A hydraulic valve play compensating element for generating valve play compensation for a gas exchange valve in a valve operating mechanism of an internal combustion engine, having a piston housing in which a piston, which is elastically supported against the piston housing via a piston spring, is guided in a movable fashion, in which the piston has a low-pressure space which is connected via an axial opening in a piston head to a high-pressure space which is enclosed by the piston housing, and having a control valve which has at least one control valve closing element which can bear in a seal-forming fashion against a valve seat, the letter surrounding the axial opening on a piston head underside, and comprises a control valve spring which is preloaded in the opening direction, wherein, in the event of a collapsing movement between the piston and the piston housing when the gas exchange valve is actuated, the control valve closing element can be acted on hydraulically in the closing direction by means of a build-up of pressure in the high-pressure space wherein the control valve spring is embodied as a spring element which is arranged in the high-pressure space, is radially spaced apart from the axial opening and from the control valve closing element and is supported between the piston head underside and a control valve holding element which is guided in the high-pressure space in an axially movable fashion with a delimited actuating travel, holds the control valve closing element and is provided with an oil passage.

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Troy, MI, United States of America

Lu Zhu