The Sliding Cylinder Head Gasket-A Solution for High-Duty Engines

Extensive measurements taken on a fired engine and in a simulator have shown that there is an additional cylinder distortion superimposed on the initial distortion, which is caused by the clamping of the cylinder head. This additional distortion factor is mainly caused by quasi-static, thermal-conditioned sliding movements between the head, gasket and block. Superimposed cylinder distortion and sliding movement are closely related and are influenced by the friction conditions.

A new type of coating for the combustion chamber edgings of cylinder head gaskets will be presented. By the application of this coating, especially in bimetal engines that are prone to relative movement at the block and head, the superimposed distortions are considerably reduced. Additional functional advantages of this sliding coating for the operational reliability of today's generation of engines will be shown.