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. 15, 1992
Filed:
Nov. 13, 1991
Applicant:
Inventors:
Akira Yamada, Iwata, JP;
Miyoshi Ishibashi, Iwata, JP;
Assignee:
Yamaha Hatsudoki Babushiki Kaisha, Iwata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ; F02M / ; F02D / ; F02P / ;
U.S. Cl.
CPC ...
123295 ; 123 / ; 123430 ; 123299 ; 123620 ; 123602 ;
Abstract
An improved method of operating a two cycle direct injected internal combustion engine so as to provide good ignition and combustion even when operating in a stratified condition. This is achieved either by extending the duration of firing of the spark plug either by extending a single firing or providing multiple firings per cycle or by changing the energy level across the gap of the spark plug during its firing.