Cylinder head gasket

A technology of gaskets and cylinder heads, which is used in engine sealing, engine sealing devices, machines/engines, etc., can solve the problems of easy cracks and accelerated deformation of cylinder barrels, so as to reduce indentation, restrain deformation, and restrain surface The effect of rising pressure
CN101074730AInactive Publication Date: 2007-11-21TOYOTA JIDOSHA KK +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TOYOTA JIDOSHA KK
Publication Date
2007-11-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provide a cylinder head gasket having sufficient sealing performance around a cylinder bore hole while suppressing the deformation of a cylinder bore of an engine. The cylinder head gasket 1 comprises: a first metal structural plate 10 having a folded back portion 11 and formed around the cylinder bore hole 2; and full beads 21 formed opposite to each other on a second metal structural plate 20 and a third metal structural plate 30, respectively, holding the first metal structural plate 10 therebetween with their protrusions on the sides of the first metal structural plate 10, the full beads 21 which have protruded portions 21a arranged on the inner periphery side of an end 11a of the folded back portion 11. At least one or more sub plates 40, 50 are inserted and arranged inside the folded back portion 11. Thicknesses t2 of the second metal structural plate 20 and the third metal structural plate 30 around the cylinder bore hole 2 are respectively smaller than a half th of a thickness tg of the folded back portion 11.
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Description

technical field

[0001] The present invention relates to a cylinder head gasket sandwiched between two components such as a cylinder head and a cylinder block of an engine for sealing. In the event of misalignment, the increase in surface pressure on the front end of the cylinder bore can also be suppressed, thereby reducing the cylinder head gasket such as indentations that occur on components. Background technique

[0002] The cylinder head gasket is clamped between the cylinder head and the cylinder block of the automobile engine, and is connected by the cylinder head bolts to seal fluids such as combustion gas, engine oil, and cooling water.

[0003] In addition, due to the recent reduction in the weight and size of the engine, the engine tends to be lower in rigidity. When the cylinder head gasket is sealed, when a large sealing surface pressure is applied to the front part of the cylinder bore in order to ensure the sealing performance, due to the engine The rigidity o...

Claims

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