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:
Aug. 27, 2024
Filed:
Aug. 07, 2023
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Keiichiro Aoki, Shizuoka-ken, JP;
Masato Ikemoto, Shizuoka-ken, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
When the element temperature of the air-fuel ratio sensor becomes equal to or higher than the activation temperature, the electronic control unit starts the detection of the air-fuel ratio based on the sensor output of the air-fuel ratio sensor and the air-fuel ratio feedback control based on the detection result. The electronic control unit calculates the air-fuel ratio detection value by setting the gain of the air-fuel ratio detection value with respect to the sensor output when the sensor output is a value indicating the air-fuel ratio richer than the stoichiometric air-fuel ratio to a value smaller than that after the elapse of the synchronization period from the start of the air-fuel ratio until the element temperature becomes equal to or higher than the predetermined desorption convergence temperature.