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:
Oct. 27, 1998
Filed:
Sep. 22, 1997
Applicant:
Inventors:
Yu Motoyama, Iwata, JP;
Akihiko Ohokubo, Iwata, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
1231 / ;
Abstract
A number of embodiments of two-cycle crankcase compression direct injected internal combustion engines wherein engine speed is controlled under at least some running conditions by cylinder disabling. Exhaust systems including exhaust control valves for precluding the passage of cooler gasses from the disabled cylinders to the operating cylinders through their exhaust ports are illustrated in varying forms and for various types of engines.