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:
Feb. 12, 2019
Filed:
Mar. 02, 2016
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Inventors:
Takayoshi Tanaka, Susono, JP;
Yoshihisa Shinoda, Susono, JP;
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/10 (2006.01); F02D 41/02 (2006.01); F01N 3/08 (2006.01); F01N 3/20 (2006.01); F01N 9/00 (2006.01); F02D 41/04 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0295 (2013.01); F01N 3/0814 (2013.01); F01N 3/0842 (2013.01); F01N 3/103 (2013.01); F01N 3/2066 (2013.01); F01N 9/00 (2013.01); F02D 41/042 (2013.01); F01N 2250/12 (2013.01); F01N 2430/06 (2013.01); F01N 2560/025 (2013.01); F01N 2560/14 (2013.01); F01N 2610/02 (2013.01); F01N 2900/0416 (2013.01); F01N 2900/08 (2013.01); F01N 2900/1402 (2013.01); F01N 2900/1602 (2013.01); F02D 41/1475 (2013.01); F02D 2200/0802 (2013.01); F02D 2200/0804 (2013.01); Y02T 10/22 (2013.01); Y02T 10/24 (2013.01); Y02T 10/47 (2013.01);
Abstract
In an exhaust gas control system for an internal combustion engine operable at a lean air-fuel ratio, after a request to stop the internal combustion engine has been issued, the internal combustion engine is operated at a stoichiometric air-fuel ratio or lower until an air-fuel ratio in an SCR catalyst becomes lower than or equal to the stoichiometric air-fuel ratio, and then supply of fuel to the internal combustion engine is stopped.