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. 13, 2020
Filed:
Oct. 08, 2019
Aisan Kogyo Kabushiki Kaisha, Obu-shi, Aichi-ken, JP;
Daisaku Asanuma, Gamagori, JP;
AISAN KOGYO KABUSHIKI KAISHA, Obu, JP;
Abstract
In an internal combustion engine system, a controller is configured to: perform a purge control during execution of an A/F feedback learning; detect a purge concentration after execution of the A/F feedback learning; calculate an A/F feedback learning correction value adjusted by offsetting an A/F feedback learning value with a contributing value of the purge concentration; disable updating of the A/F feedback learning correction value after calculation of the A/F feedback learning correction value and until the purge control is stopped; and detect the purge concentration based on an air-fuel ratio deviation amount.