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:
Feb. 23, 1988
Filed:
Mar. 10, 1987
Applicant:
Inventor:
Takumori Yoshida, Iwata, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B / ;
U.S. Cl.
CPC ...
123308 ; 123432 ; 123 / ; 123445 ;
Abstract
Several embodiments of induction systems for internal combustion engines that improve maximum power and also provide good running at low and medium speeds with a good torque curve throughout the engine speed range. Each embodiment includes a pair of intake passages that serve each chamber of the engine through a respective pair of intake valves. The intake passages are each tuned to serve a different running condition of the engine.