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. 22, 1981
Filed:
Apr. 26, 1979
Applicant:
Inventor:
Keisou Takeda, Susono, JP;
Assignee:
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ; F02D / ;
U.S. Cl.
CPC ...
123440 ; 123437 ; 123438 ; 123489 ;
Abstract
An air-fuel ratio control apparatus of an internal combustion engine controls the change in the amount of fuel discharged into an intake passage downstream of a throttle valve of the engine more smoothly in accordance with the change in the amount of fuel discharged into the intake passage upstream of the throttle valve. Thus, the air-fuel ratio of the air-fuel mixture fed into the cylinder of the engine is changed smoothly without causing a surging phenomenon to occur in the engine.
Takeda, Keisou. (1981). Air-fuel ratio control apparatus of an internal combustion engine (U.S. Patent No. 4306523). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4306523
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile