Mazda Motor Corporation

Shinichi Fujimaki

Kazuo Ichikawa

Osamu Aoki

Takashi Ikai

Kouichi Nakano

Yoshiyuki Koga

Disclosed is an engine piston structure including an outer peripheral portion () formed along an outer shape of a piston (), and having a predetermined thickness, a pair of piston pin supporters () having peripheral walls () having a predetermined thickness, and couplers () each coupling the pair of the piston pin supporters () to the outer peripheral portion (). The outer peripheral portion () and the peripheral walls () of the piston pin supporters () are solid. Each of the coupler () is porous. The outer peripheral portion (), the piston pin supporters (), and the couplers () are made of a metal material and are integrally formed together.

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Hiroshima, Japan

Shinichi Fujimaki