Title:
PISTON FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2015/177980
Kind Code:
A1
Abstract:
On a piston top surface 10, a cavity 12 and two valve recesses 14 are formed. On the piston top surface 10, a first heat insulating film is formed. However, on edge portions 10a, 12a and 14a, a second heat insulating film different from the first heat insulating film is formed. The second heat insulating film is formed along the edge portions 10a, 12a and 14a. The first heat insulating film is composed of porous alumina and a sealer. The second heat insulating film is composed of only porous alumina.
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Inventors:
YAMASHITA HIDEO (JP)
Application Number:
PCT/JP2015/002355
Publication Date:
November 26, 2015
Filing Date:
May 08, 2015
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
International Classes:
F02F3/12; F02B23/06
Domestic Patent References:
| WO2014030297A1 | 2014-02-27 |
Foreign References:
| JP2011220207A | 2011-11-04 | |||
| US20030196547A1 | 2003-10-23 | |||
| JP2012072745A | 2012-04-12 | |||
| JP2008111367A | 2008-05-15 |
Attorney, Agent or Firm:
TAKAHASHI, Hideki et al. (TAKAHASHI & PARTNERS Konwa Bldg. 7F, 12-22, Tsukiji 1-chome, Chuo-k, Tokyo 45, JP)
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