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:
Jan. 14, 1997
Filed:
Jun. 07, 1995
Tetsuya Hasebe, Saitama, JP;
Kazuhide Kumagai, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In a valve operating system for a multi-cylinder internal combustion engine, which is capable of closing and stopping operation of both of a pair of intake valves in a cylinder to provide a stopped state of a cylinder, intake valves are independently operatively connected to first and second driving rocker arms which abut against a pair of stopping portions provided in a completely circular shape without a cam lobe on a cam shaft. A first free rocker arm is provided and abuts against a substantially stopping cam, and a second free rocker arm is provided and abuts against an operating cam. A first connection switch-over device is provided in the first driving rocker arm and the first free rocker arm, and a second connection switch-over device is provided in the second driving rocker arm and the second free rocker arm. A third connection switch-over device is provided in the first driving rocker arm, the second driving rocker arm and the second free rocker arm. Thus, it is possible to substantially close and stop only one of the intake valves in a low speed range of the engine to produce a swirl through the other intake valve, thereby improving the combustibility and the specific fuel consumption.