| 摘要 |
An improved head gasket assembly for sealing the block and head of an internal combustion engine where the head mounts a precombustion chamber, and method of making that gasket assembly. The gasket assembly comprises a main gasket body and an armored fire ring mounted at the combustion openings. The fire ring provides a precombustion tab underlying the precombustion chamber, against which sealing occurs. To enhance that seal, an auxiliary sealing element is positioned between the wire ring and the precombustion tab. The auxiliary element includes a main body portion which lies along the periphery of the precombustion chamber and sealing tabs which bridge the zones of intersection of the chamber and the wire ring so that when the gasket assembly is compressed between the block and the head and precombustion chamber, the auxiliary sealing element induces a more effective and consistent seal between the head and precombustion chamber, and the associated fire ring and main gasket body, regardless of whether the precombustion chamber is flush with, projects from, or is recessed with respect to, the head. |
