Invention Grant
- Patent Title: Piston for internal combustion engine
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Application No.: US15129512Application Date: 2015-05-08
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Publication No.: US09932928B2Publication Date: 2018-04-03
- Inventor: Hideo Yamashita
- Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Applicant Address: JP Toyota-shi, Aichi-ken
- Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee Address: JP Toyota-shi, Aichi-ken
- Agency: Andrews Kurth Kenyon LLP
- Priority: JP2014-107380 20140523
- International Application: PCT/JP2015/002355 WO 20150508
- International Announcement: WO2015/177980 WO 20151126
- Main IPC: F02F3/12
- IPC: F02F3/12 ; F02B23/06
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.
Public/Granted literature
- US20170122250A1 PISTON FOR INTERNAL COMBUSTION ENGINE Public/Granted day:2017-05-04
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