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:
Oct. 01, 1991
Filed:
Jun. 15, 1989
Masanobu Uchinami, Himeji, JP;
Mitsubishi Denki K.K., Tokyo, JP;
Abstract
An air-fuel ratio control apparatus comprises a broad range air-fuel ratio sensor to detect continuously an air-fuel ratio on the basis of components of exhaust gas from an engine, a determining means to determine a correction coefficient by obtaining an error between the target air-fuel ratio and an actual air-fuel ratio, an integrating means to integrate the correction coefficient, a non-volatile memory to store the integrated value as information of correction in relation to operational conditions of the engine, a processing means to calculate a basic fuel injection quantity on the basis of the operational conditions of the engine, and a correction means to correct the basic fuel injection quantity depending on the information of correction.