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:
Jul. 11, 2000
Filed:
Oct. 07, 1998
Wakichi Kondo, Kariya, JP;
Daiji Isobe, Toyohashi, JP;
Denso Corporation, Kariya, Aichi-pref., JP;
Abstract
In a fuel injection control for engines, a basic transient correction coefficient is calculated to be used for correcting a basic fuel injection amount calculated based on intake air pressure. This transient correction coefficient is itself corrected by a further correction coefficient which corresponds to a fuel injection timing variable so as to overlap with the opening of an intake valve. The basic fuel injection amount is then corrected by the corrected transient correction coefficient to determine a final fuel injection amount. Thus, air-fuel mixture is controlled to a desired air-fuel ratio even when the engine is in a transient condition, thereby improving drivability and exhaust emissions.