Aisin Seiki Kabushiki Kaisha

Advanced Laser Technology Research Center Co., Ltd.

Ryo Okazaki

Takuya Niimi

Akihiro Okamoto

Takayuki Hayashi

Keiki Sugano

Muneharu Kutsuna

Atsushi Kuniyasu

Kiyotaka Saito

Hiroyoshi Hiejima

This piston includes a piston main body made of aluminum or an aluminum alloy, used in an internal combustion and a modified layer formed on a surface of a strength reinforced portion of the piston main body, having a surface made of aluminum oxide by plasma oxidation, to which compressive residual stress is applied.

Piston and method for manufacturing piston

A sliding component for an internal combustion engine includes: a sliding component main body that includes a plurality of concave portions formed in a predetermined portion thereof; and a coating layer that covers a portion of the sliding component main body, in which the plurality of concave portions are not formed.

Sliding component for internal combustion engine and method of manufacturing sliding component for internal combustion engine

A piston for an internal combustion engine includes a piston main body for the internal combustion engine, and a crosshatched groove being formed on a surface of the piston main body. The crosshatched groove includes a crosshatch angle that corresponds to a crossing angle of lines that configure a crosshatch, the crosshatch angle that is set at a range from equal to or greater than 15 degrees to equal to or less than 35 degrees.

Piston for internal combustion engine and manufacturing method thereof

Growing community of inventors

Kariya, Japan

Ryo Okazaki