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. 20, 2018
Filed:
Aug. 15, 2016
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Masahide Iida, Toyota, JP;
Itsuya Kurisaka, Nisshin, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
An emission control system and method execute a regeneration control such that a catalyst device recovers from poisoning, in a first control mode in which a temperature raising operation and a releasing operation are alternately repeated and in a second control mode in which the temperature raising operation and the releasing operation are alternately repeated. In the first control mode, the temperature raising operation is performed by post injection from a fuel injector. In the second control mode, the temperature raising operation is performed by adding fuel into exhaust gas from an addition valve such that the HC concentration in exhaust gas oscillates with an amplitude within a first specified range and a cycle within a second specified range. The control mode is switched from the first control mode to the second control mode during the regeneration control.