Nissan Motor Company Limited

Ube Industries, Inc.

Atsugi Unisia Corp.

Masaji Matsunaga

Koji Watanabe

Yoshihiro Yamada

Mamoru Sayashi

Sumio Hirao

Kyosuke Kanemitsu

Kunihiko Makino

Toshiro Kawata

A magnesium Mg--Al--RE magnesium alloy wherein an amount of a rare earth component may be reduced while optimial tensile strength and durability are obtained. The Alloy further includes a small calcium component. A high degree of creep resistance is obtained. Further, additional copper and/or zinc components may be introduced together, or singly for providing favorable tensile characteristics to the alloy material.

Magnesium alloy

An internally-chilled piston for an internal combustion engine is provided. This piston comprises a piston body made of an aluminum alloy and a piston head including a cylindrical member and a ring-shaped member engaging the outer peripheral surface of the cylindrical member by a shrink fit bonding. The cylindrical member constitutes the central portion of the piston head, while the ring-shaped member constitutes the periphery thereof. On the surface of the ring-shaped member which contacts with the melt forming the piston body during casting, an aluminized layer is formed which chemically connects the ring-shaped member and the piston body to increase the mechanical strength of bonding therebetween.

Piston for internal combustion engine

Growing community of inventors

Kanagawa, Japan

Masaji Matsunaga