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:
Mar. 07, 2000
Filed:
Sep. 11, 1997
Takayuki Anamoto, Iwata, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Abstract
An improved fuel injection control system for an engine, wherein the fuel injectors are controlled during normal engine running by sensing engine running conditions. The engine is controlled in the lower ranges and under abnormal conditions by disabling one or more cylinders. On initial starting an enriched amount of fuel is supplied from the fuel injectors. This amount of enriched fuel is held for a predetermined time and then is gradually reduced to return to normal control even when there is cylinder disabling. The spark timing is also advanced well beyond the maximum normal spark advance during starting and is retarded to the normal spark timing after a predetermined time period.