| 摘要 |
The objective is to provide a cylinder head gasket with which bore deformation is reduced regardless of a reduction in the bead spring constant or a reduction in the step amount in a surface pressure generation part. To achieve this objective this cylinder head gasket, which is mounted sandwiched between the cylinder block and the cylinder head in an internal combustion engine, has flat circular bore holes at the regions overlapping the combustion chamber in the cylinder block, and surface pressure generation parts comprising upright shapes that surround the periphery of the bore holes at the regions overlapping partition walls between the combustion chamber and the water jacket part in the cylinder block. The surface pressure generation parts are arranged at fixed positions in the thickness direction of the partition walls and are arranged closer to the combustion chamber side or the water jacket part side than the fixed positions in the thickness direction of the partition walls, on a portion of a circle around the bore holes. |
