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:
Apr. 27, 2004
Filed:
Oct. 21, 2002
Applicant:
Inventor:
Chitoshi Saito, Shizuoka, JP;
Assignee:
Yamaha Marine Kabushiki Kaisha, Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K 4/100 ;
U.S. Cl.
CPC ...
B60K 4/100 ;
Abstract
A marine engine is controlled to operate in a lean burn mode during middle range operation. During low speed/low load operation, an engine is operated at a preset air/fuel ratio. The engine then transitions to a lean burn mode and operates in the lean burn mode during mid speed/mid load operation. The engine then receives a richer air/fuel ratio during high speed/high load operation.