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:
May. 17, 1994
Filed:
Jun. 19, 1992
Applicant:
Inventors:
Yoshiharu Isaka, Iwata, JP;
Masahiro Ito, Iwata, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
12318814 ; 123 / ; 123308 ;
Abstract
Several embodiments of induction systems for internal combustion engines wherein the effective shape of the intake passage may be changed during engine running conditions to achieve turbulence of the desired type in the combustion chamber and improve volumetric efficiency at low and mid range performance and provide a substantially uninterrupted introduction of charge under high speed running so as to improve the performance throughout the entire engine load and speed ranges. Also, a control valve arrangement is provided in the exhaust system for improving performance under low engine speeds and low engine loads.