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:
Apr. 28, 2009
Filed:
Jan. 28, 2005
Noriaki Fujii, Saitama, JP;
Katsunori Nakamura, Saitama, JP;
Akiyuki Yonekawa, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
In an engine having a cylinder head which forms a portion of an engine body and is provided with an intake valve operated for opening and closing operations by an intake valve operating device having an intake camshaft and an exhaust valve driven for opening and closing operations by an exhaust valve operating device having an exhaust camshaft, the intake camshaft () is placed higher in position than the exhaust camshaft () by increasing the distance between the intake camshaft () and a combustion chamber () along a cylinder axis (C) of the engine body () relative to that between the exhaust camshaft () and the combustion chamber (). Lubricating oil is thereby enabled to be easily used for exhaust valve operating device after being used for lubrication and cooling of the intake valve operating device, thus achieving efficient lubrication and cooling of the exhaust valve operating device.