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:
Dec. 30, 2003
Filed:
Feb. 05, 2002
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 4/100 ;
U.S. Cl.
CPC ...
F02D 4/100 ;
Abstract
An air-fuel ratio control device for an internal combustion engine is provided with: an air-fuel ratio sensor; an O sensor; a device for setting a reference air-fuel ratio target value; a device for setting a target value of an output value of the O sensor; a device for obtaining an air-fuel ratio target value correction value; a device for obtaining a forcible air-fuel ratio oscillation width target value; a device for computing an air-fuel ration target value; a device for computing a correction value; a device for obtaining a forcible air-fuel ratio oscillating width injector driving time correction value; and a device for setting injector driving time.