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:
Aug. 04, 1998
Filed:
Dec. 23, 1994
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Abstract
A number of embodiments of V-type internal combustion engines having an induction system which provides variable length sections for serving each combustion chamber, with each section being tuned to provide optimum charging efficiency for a different engine running speed. In addition, a flow-controlling valve is provided in the induction passages adjacent the combustion chamber and is movable between a nonrestricting flow position and a position wherein the flow is redirected to generate turbulence in the combustion chamber. The induction system is designed so as to provide a compact assembly and yet permit efficient induction and combustion under a wide range of engine speed and load conditions.