Title:
The piston of an internal-combustion engine
Document Type and Number:
Japanese Patent JP6070631
Kind Code:
B2
Abstract:
On a piston top surface, a cavity and two valve recesses are formed. On the piston top surface, a first heat insulating film is formed. However, on edge portions, 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. The first heat insulating film is composed of porous alumina and a sealer. The second heat insulating film is composed of only porous alumina.
Inventors:
Hideo Yamashita
Application Number:
JP2014107380A
Publication Date:
February 01, 2017
Filing Date:
May 23, 2014
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02F3/12; F02B23/00; F02F3/00; F02F3/10
Domestic Patent References:
| JP2011220207A | ||||
| JP2004503708A | ||||
| JP2010203334A | ||||
| JP2013060620A | ||||
| JP2010249008A | ||||
| JP2010222984A | ||||
| JP2009121425A |
Foreign References:
| WO2014030297A1 |
Attorney, Agent or Firm:
Hideki Takahashi
Mamoru Takada
Hidekazu Onishi
Mamoru Takada
Hidekazu Onishi
Previous Patent: A control device of four-wheelp-drive vehicles
Next Patent: WITHSTAND VOLTAGE PROCESSING METHOD OF CATHODE-RAY TUBE
Next Patent: WITHSTAND VOLTAGE PROCESSING METHOD OF CATHODE-RAY TUBE