Patent ID: 7311310
Filing Date: 2007-12-25
Classification: F16J

Abstract:
1. Cylinder head gasket for sealing off a sealing gap delimited by engine component sealing surfaces of at least one cylinder head and an engine block of an internal combustion engine, said engine component sealing surfaces defining a topography of the sealing gap, said cylinder head gasket comprising a substantially metallic gasket plate defining a gasket plate plane and having at least one combustion chamber opening, screw openings for cylinder head screws and at least one fluid opening, characterized by the combination of the following features: (a) the gasket plate has only one layer of sheet steel extending over the entire gasket plate; (b) a combustion chamber sealing element is provided around the combustion chamber opening, said combustion chamber sealing element forming on at least one side of the cylinder head gasket an elevation with a gasket sealing surface surrounding only this combustion chamber opening in a closed manner for being pressed against at least one of the engine component sealing surfaces, said gasket sealing surface varying in height relative to said gasket plate plane so that said gasket sealing surface has a height profile formed prior to installation of the cylinder head gasket so as to correspond at least approximately to the topography of the sealing gap to be sealed off as a result of clamping of the cylinder head gasket between the engine component sealing surfaces, said elevation having a metallic main body whose material is selected and whose cross section is designed such that the main body is pressure resistant and creepresistant and therefore not deformable in its height under a maximum load occurring with the cylinder head gasket installed and the engine operating; (c) for the at least one fluid opening, the gasket plate is provided with at least one sealing bead surrounding the fluid opening in a closed manner and being elastically deformable in a direction perpendicular to the gasket plate.