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:
Feb. 27, 2007
Filed:
Sep. 02, 2005
Katsuhiko Sato, Saitama, JP;
Katsuhiko Sato, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A cylinder head of an internal combustion engine is provided with an improved intake port configuration, that improves the efficiency of air intake into a combustion chamber. The engine includes an intake valve which covers an opening of a combustion chamber and which has a valve stem supported by a valve guide. The valve guide is fixed to a curved wall of an intake port leading from a hole in the side of the cylinder head to the intake opening of the combustion chamber. An intake port is configured so that the cross-sectional area thereof reduces with an increasing distance from the intake opening of the combustion chamber, and so that the passage cross-sectional area at a distance equal to about 10% of the total length of the intake port from the intake opening of the combustion chamber is 0.8 times the area of opening of the combustion chamber or smaller.