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. 23, 1984
Filed:
Jan. 19, 1983
Applicant:
Inventors:
Assignees:
Nippondenso Co., Ltd., Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
123489 ; 123589 ;
Abstract
In an air-fuel ratio control system for internal combustion engines, an electronic control unit supplies a drive signal to an air-fuel ratio actuator in response to signals from an oxygen sensor and a heavy load sensor. The electronic control unit holds the air-fuel ratio compensation signal to a predetermined value when the heavy load sensor detects that a predetermined time has not passed since the engine enters a heavy load condition, and changes the air fuel ratio compensation signal to a predetermined value associated with the rich mixture when it is detected that the predetermined time has passed.