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:
Jan. 29, 2019
Filed:
Jul. 14, 2017
Applicant:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Inventor:
Arifumi Matsumoto, Gotenba, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01); F01N 3/20 (2006.01); F01N 11/00 (2006.01); F01N 13/00 (2010.01);
U.S. Cl.
CPC ...
F01N 3/208 (2013.01); F01N 3/2066 (2013.01); F01N 3/2073 (2013.01); F01N 11/00 (2013.01); F01N 13/0093 (2014.06); F01N 2560/026 (2013.01); F01N 2560/06 (2013.01); F01N 2560/14 (2013.01); F01N 2570/14 (2013.01); F01N 2610/02 (2013.01); F01N 2610/10 (2013.01); F01N 2610/146 (2013.01); F01N 2610/1453 (2013.01); F01N 2610/1486 (2013.01); F01N 2900/1411 (2013.01); F01N 2900/1812 (2013.01); F01N 2900/1821 (2013.01);
Abstract
In an exhaust gas control system for an internal combustion engine, addition valves which add an additive toward a first selective reduction NOx catalyst are provided in an exhaust passage on both of an upstream side and a downstream side of the SCR catalyst. In a case where a flow rate of exhaust gas flowing in the exhaust passage is equal to or lower than a predetermined flow rate, the additive is added from both addition valves to allow ammonia to be adsorbed onto the first selective reduction NOx catalyst.