Aisin Seiki Kabushiki Kaisha

Advanced Laser Technology Research Center Co., Ltd.

Akihiro Okamoto

Takuya Niimi

Ryo Okazaki

Takayuki Hayashi

Keiki Sugano

Hiroaki Sasayama

Hiroyoshi Hiejima

Muneharu Kutsuna

Atsushi Kuniyasu

Kiyotaka Saito

Hajime Minaki

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 mechanical component for an internal combustion engine includes a mechanical component body made of one of aluminum and aluminum alloy and used for the internal combustion engine, a nickel plating layer formed to cover a surface of a predetermined portion of the mechanical component body, and a reforming layer formed between the surface of the predetermined portion of the mechanical component body and the nickel plating layer.

Mechanical component for internal combustion engine, manufacturing method of mechanical component for internal combustion engine, and mechanical component

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

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Nishio, Japan

Akihiro Okamoto