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. 18, 1989
Filed:
Dec. 24, 1987
Tsuneo Konno, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A valve operating device for the intake or exhaust valves of a multicylinder internal combustion engine. Each cylinder has a valve operating mechanism associated therewith for opening and closing intake or exhaust valves associated with that cylinder in at least two different manners for different engine speeds. The cylinders are divided into two or more groups with each of said valve operating mechanisms being arranged to operate the intake or exhaust valves associated with the cylinders in one of the groups in a different operation mode from the intake or exhaust valves associated with the cylinders in another of the groups, at least under a certain operating condition of the engine, such as at low speed. The various embodiments disclosed different arrangements for the valve operating mechanisms for improving engine operation over various ranges of engine speed.