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:
Dec. 09, 1986
Filed:
Jul. 26, 1985
Applicant:
Inventors:
Toshihiko Takata, Hamamatsu, JP;
Yoshiharu Nakayama, Hamamatsu, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
123432 ; 123580 ; 123 / ;
Abstract
An induction system for an internal combustion engine wherein each chamber of the engine is provided with three intake ports and one charge former serves two of those intake ports while another charge former serves the other intake port. The charge formers employ a staged throttle valve arrangement so that the other charge former supplies the idle and low speed requirements and the first mentioned charge former comes into operation only at high speeds and loads. In accordance with another feature, the arrangement is provided for pairs of chambers and the single charge former serves two chambers.