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:
Jul. 17, 2001
Filed:
Jul. 27, 2000
Toshiki Kobayashi, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In a valve movement control system of an internal combustion engine, a hydraulic operational characteristic variable mechanism with no operational lag or a shortened operational lag on re-starting of the engine is provided. The valve movement control system comprises a camshaft having a cam journal supported for rotation by a support member, a hydraulic operational characteristic variable mechanism provided on the camshaft, an oil pressure control valve, and a control oil passage for supplying operating oil to the operational characteristic variable mechanism through a plurality of members including the camshaft and the support member. An operating oil reserve chamber is provided above the cam journal for supplementing operating oil flowing out through a minute gap between the cam journal and the support member when the engine is stopped.