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:
Sep. 04, 2018
Filed:
Nov. 22, 2016
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
A heat shield film is formed on a bottom surface of a cylinder head and a heat shield film is formed on an inner peripheral surface of a small diameter hole portion. The film is a thermal spraying film made from the same film material. Since the film is thicker than the film, the film has higher thermal capacity than the film and thus heat retaining effect of the film is higher than that of the film. Therefore, combustion gas generated in a combustion chamber is suppressed to lose its momentum around the portion. Even if the combustion gas goes off around the portion, excessive temperature decrease of the combustion gas in the portion is suppressed.