Title:
PISTON OF INTERNAL-COMBUSTION ENGINE, AND METHOD FOR MANUFACTURING PISTON OF INTERNAL-COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2018/190167
Kind Code:
A1
Abstract:
According to the present invention, a piston of an internal-combustion engine includes a piston main body portion, an abrasion resistant ring, and an intermediate layer. The piston main body portion is formed from an aluminum alloy or a magnesium alloy, and includes a piston head and a skirt portion integral with the piston head. The abrasion resistant ring has a higher hardness than the piston main body portion, has a piston ring groove and is fixed to the piston head. The intermediate layer is disposed between the piston head and the abrasion resistant ring, and includes aluminum and an additive. The additive improves the wettability of the aluminum.
Inventors:
SHISHIDO KEITAROU (JP)
Application Number:
PCT/JP2018/014067
Publication Date:
October 18, 2018
Filing Date:
April 02, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02F3/00; F02F3/10; F16J1/01
Foreign References:
| JPH06142889A | 1994-05-24 | |||
| JP2009299621A | 2009-12-24 | |||
| JP2010523869A | 2010-07-15 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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