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. 04, 2022
Filed:
Feb. 11, 2022
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Shinji Yoshioka, Toyota, JP;
Shinichi Nakagoshi, Miyoshi, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken, JP;
Abstract
An engine control device performs air-fuel ratio control of an engine through a main air-fuel ratio feedback process based on an output of a front air-fuel ratio sensor, a sub air-fuel ratio feedback process of alternately switching a target air-fuel ratio between a lean-side target air-fuel ratio and a rich-side target air-fuel ratio based on an output from a rear air-fuel ratio sensor. The engine control device performs a limiting process of setting an upper limit of a control range of an opening level of a waste gate valve to be less when a combustion operation of the engine continues to be performed for a long time without being stopped by fuel cutoff than otherwise.