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:
Nov. 19, 1985
Filed:
Apr. 10, 1984
Applicant:
Inventors:
Assignee:
Nippondenso Co., Ltd., Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ; F02M / ;
U.S. Cl.
CPC ...
123478 ; 123571 ;
Abstract
An air-fuel ratio control system applicable to engines having exhaust gas recirculation (EGR). A basic amount of fuel to be injected is determined on the basis of an intake air pressure or a throttle opening. When the operating condition of an engine meets a predetermined condition for an exhaust gas recirculation control mode, a correction coefficient for the exhaust gas recirculation control mode is read from map data stored in memory means to correct the basic amount therewith. Immediately after the correction coefficient has been changed, the basic amount is corrected with a correction coefficient related to the values of the correction coefficient immediately before and after it is changed.