The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 2014
Filed:
Apr. 11, 2011
Akihiro Ikeda, Nagoya, JP;
Tsutomu Wakiya, Toyota, JP;
Hideo Nakamura, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A cylinder head () includes a water jacket () formed around an ignition plug mounting hole (). Upper surfaces (to) of portions of the water jacket () between intake ports () and the ignition plug mounting hole () and between exhaust ports () and the ignition plug mounting hole () are set to be lower than upper surfaces (to) of the remaining portions of the water jacket () around the ignition plug mounting hole () to increase the rigidity. Thereby, deformation of the cylinder head () due to cylinder internal pressure is limited, and the stress concentration around the ignition plug mounting hole () due to such deformation is reduced.