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:
Sep. 17, 2024
Filed:
Sep. 13, 2023
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Shinichi Takeshima, Susono, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
An air-fuel ratio control apparatus includes an air-fuel ratio control unit controlling an air-fuel ratio of exhaust gas flowing into an exhaust gas control catalyst of the internal combustion engine includes an air-fuel ratio control unit controlling the air-fuel ratio of the exhaust gas flowing into the exhaust gas control catalyst. The air-fuel ratio control unit alternately repeats a rich process for controlling the air-fuel ratio that is richer than a stoichiometric air-fuel ratio and a lean process for controlling the air-fuel ratio hat is leaner than the stoichiometric air-fuel ratio. The air-fuel ratio control unit, during the rich process, executes a lean pulse process for controlling, over a period shorter than a period of one execution of the lean process, the air-fuel ratio of the exhaust gas to reach a lean air-fuel ratio having a higher lean level than the air-fuel ratio during the lean process.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile