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:
Aug. 29, 2000
Filed:
Nov. 03, 1998
Kenji Yamamoto, Anjo, JP;
Hirotada Yamada, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
A fuel injection control apparatus which infers fuel temperature from cooling water temperature and intake air temperature. From these inferred temperatures, a correction coefficient of the air-fuel ratio is found from the inferred fuel temperature and the intake manifold pressure by using data stored in a map. The map is set up so that a characteristic thereof shows that, the higher the inferred temperature of fuel, the larger the correction coefficient of the air-fuel ratio and, thus, the longer the fuel injection time. Subsequently, an ineffective injection time TV is corrected in accordance with the inferred fuel temperature. A fuel injection time TI is then computed from a basic injection time TP, a representative correction coefficient Ftotal representing all correction coefficients including the correction coefficient of the air-fuel ratio, and the ineffective injection time TV.