Invention Grant
- Patent Title: Cylinder head of internal combustion engine
- Patent Title (中): 内燃机气缸盖
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Application No.: US14110606Application Date: 2011-04-11
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Publication No.: US08904975B2Publication Date: 2014-12-09
- Inventor: Akihiro Ikeda , Tsutomu Wakiya , Hideo Nakamura
- Applicant: Akihiro Ikeda , Tsutomu Wakiya , Hideo Nakamura
- Applicant Address: JP Aichi-ken
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Aichi-ken
- Agency: Sughrue Mion, PLLC
- International Application: PCT/JP2011/059024 WO 20110411
- International Announcement: WO2012/140722 WO 20121018
- Main IPC: F02F1/40
- IPC: F02F1/40 ; F02F1/24 ; F02F1/42 ; F02F1/38
Abstract:
A cylinder head (1) includes a water jacket (4) formed around an ignition plug mounting hole (5). Upper surfaces (12 to 14) of portions of the water jacket (4) between intake ports (7) and the ignition plug mounting hole (5) and between exhaust ports (8) and the ignition plug mounting hole (5) are set to be lower than upper surfaces (15 to 17) of the remaining portions of the water jacket (4) around the ignition plug mounting hole (5) to increase the rigidity. Thereby, deformation of the cylinder head (1) due to cylinder internal pressure is limited, and the stress concentration around the ignition plug mounting hole (5) due to such deformation is reduced.
Public/Granted literature
- US20140076262A1 CYLINDER HEAD OF INTERNAL COMBUSTION ENGINE Public/Granted day:2014-03-20
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