Toyota Jidosha Kabushiki Kaisha

Nippon Gasket Company, Ltd.

Toru Takasu

Kazuya Yoshijima

Kenji Uchida

Yoshihiko Masuda

Ryosuke Fujiki

Yasumaro Takeda

A metal gasketincludes a pair of bead platesandhaving a cylinder holecorresponding to a cylinder bore, a full beadsurrounding the cylinder hole, a first intermediate plateinterposed between the pair of bead plates, and a shim plateinterposed between the first intermediate plate and one bead plate in an area around the cylinder hole. The shim plateis disposed to overlap with the full bead, and the thickness of a contact portionto contact with the shim plateof the first intermediate plate changes in the peripheral direction of the cylinder hole.

Metal gasket

A cylinder head gasketis sandwiched between a cylinder headand a cylinder blockwith a cylinder boreand includes a substratewith a combustion chamber holedrilled at a position of the cylinder bore, and seal platesto, the substrateand the seal plates are stacked on one another. Fixation membersandare secured to the substrate around a periphery of the combustion chamber hole. The seal plates include an engagement holeformed therein and with which the fixation members are engaged. The engagement hole is engaged with the fixation members. The fixation members are sandwiched between the cylinder head and the cylinder block. The cylinder head and the cylinder block can be firmly coupled together via the fixation members.

Cylinder head gasket

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Toyota, Japan

Toru Takasu