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:
Nov. 26, 2019
Filed:
Mar. 01, 2019
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Kazuhiro Umemoto, Ebina, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-Ken, JP;
Abstract
The exhaust gas purification apparatus is applied to an internal combustion engine. The exhaust gas purification apparatus includes a SCR catalyst, a reducing agent addition valve, an oxidation catalyst, a fuel addition valve, and a controller. The controller is configured to add fuel into the exhaust gas through the fuel addition valve, in a case where the reducing agent is added to the exhaust gas through the reducing agent addition valve in a state where the temperature of the SCR catalyst is higher than a predetermined threshold value. The controller is further configured to control the fuel addition valve so that the amount of fuel added through the fuel addition valve is smaller in a case where the degree of deterioration of the SCR catalyst is smaller than in a case where the degree of deterioration is larger.