Title:
PISTON RING
Document Type and Number:
WIPO Patent Application WO/2008/016010
Kind Code:
A1
Abstract:
Disclosed is a piston ring which can vary a tension under low-temperature and low-load
conditions and a tension under high-temperature and high-load conditions, and
therefore can minimize the friction loss and improve the fuel efficiency. The
piston ring is formed by a titanium-tantalum shape memory alloy comprising tantalum
in an amount of not less than 30 mol% and less than 40 mol%, with the remainder being
titanium and unavoidable impurities.
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Inventors:
MIYAZAKI SHUICHI (JP)
ONODA MOTONOBU (JP)
OKADA NAOKI (JP)
FUJII YOSHITAKA (JP)
KIM HEE YOUNG (JP)
ONODA MOTONOBU (JP)
OKADA NAOKI (JP)
FUJII YOSHITAKA (JP)
KIM HEE YOUNG (JP)
Application Number:
PCT/JP2007/064902
Publication Date:
February 07, 2008
Filing Date:
July 30, 2007
Export Citation:
Assignee:
NIPPON PISTON RING CO LTD (JP)
MIYAZAKI SHUICHI (JP)
ONODA MOTONOBU (JP)
OKADA NAOKI (JP)
FUJII YOSHITAKA (JP)
KIM HEE YOUNG (JP)
MIYAZAKI SHUICHI (JP)
ONODA MOTONOBU (JP)
OKADA NAOKI (JP)
FUJII YOSHITAKA (JP)
KIM HEE YOUNG (JP)
International Classes:
C22C27/02; F02F5/00; F16J9/06; F16J9/26
Foreign References:
| JP2004340075A | 2004-12-02 | |||
| JP2004003574A | 2004-01-08 | |||
| JP2006089826A | 2006-04-06 | |||
| JP2006089825A | 2006-04-06 |
Attorney, Agent or Firm:
ISHIKAWA, Yasuo (17-11 Shiba 2-chome, Minato-k, Tokyo 14, JP)
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