Toyota Jidosha Kabushiki Kaisha

Kabushiki Kaisha Toyota Jidoshokki

Ishikawa Gasket Co., Ltd.

Tatsuo Shimakawa

Kisho Yasuda

Keisuke Nishimura

Yoshinori Kodera

Masao Suzuki

A gasket for arrangement between a cylinder block and cylinder head of an internal combustion engine. The gasket includes a lubricant hole through which lubricant is supplied to the cylinder head. A high pressure bead extends around the lubricant hole. A low pressure bead is extends around the high pressure bead and at least partially extends around a hollow portion, which is in communication with a lubricant reservoir of the engine, when the gasket is arranged between the cylinder block and the cylinder head.

Gasket for cylinder head

In a fluid passage structure of an internal combustion engine wherein oil flows from an in-block flow passage formed in a cylinder block to an in-head flow passage formed in a cylinder head, a groove that is generally rectangular in cross section is so formed in a top face of the cylinder block as to extend from a position corresponding to an opening of the in-block flow passage formed in the top face to a position corresponding to an opening of the in-head flow passage formed in a bottom face of the cylinder head, by machining or the like. Thus, a flow passage arrangement in which the openings of the flow passages are offset from each other is allowed. As a result, the degree of freedom in designing the fluid passage structure is enhanced.

Fluid passage structure of internal combustion engine

Growing community of inventors

Kariya, Japan

Tatsuo Shimakawa