Cylinder head gasket with different materials
AssigneeIshikawa Gasket Co., Ltd.
InventorYoshio Miyaoh
Life of this patent
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Abstract
In a cylinder head gasket, a base plate forming the gasket is formed of a first metallic material, and a grommet is provided around a hole for a cylinder bore and formed of a second metallic material different from the first metallic material. The grommet and the base plate are connected by welding. Accordingly, the grommet formed of the optimum material can be provided around the hole for the cylinder bore, and the base plate can be formed of the optimum material. Thus, the cylinder head gasket has a good sealing ability and excellent durability.
Claims7
A cylinder head gasket for an internal combustion engine having a cylinder bore and a fluid hole, comprising:
- a first metal plate extending substantially throughout an entire area to be sealed and having a first hole corresponding to the cylinder bore, a second hole for the fluid hole, and a first connecting portion around the first hole, and
- a peripheral member situated in the first hole to define a third hole for the cylinder bore and formed of a second metal plate different from the first metal plate, said peripheral member having a second connecting portion connected to the first connecting portion.
Dependencies are inferred from the claim text.