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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.:

US 10823040 B1

PDFFull Text
Date of Patent:
Nov. 03, 2020

Filed:

Jun. 27, 2017

Exhaust gas control system for internal combustion engine

Applicant:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Inventors:

Shinya Asaura, Numazu, JP;

Masaaki Sato, Susono, JP;

Ryohei Ono, Susono, JP;

Yuji Miyoshi, Susono, JP;

Assignee:

Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner, LLP

Primary Examiner:

Binh Q Tran

Int. Cl.
CPC ...
F01P 3/20 (2006.01); F01N 3/20 (2006.01); F01N 3/36 (2006.01); F01N 3/10 (2006.01); F01N 13/00 (2010.01); B01D 53/94 (2006.01); B01J 23/44 (2006.01); B01J 29/06 (2006.01); B01J 35/00 (2006.01); B01J 35/04 (2006.01); F01N 3/035 (2006.01); F02B 23/02 (2006.01); F02B 37/00 (2006.01);
U.S. Cl.
CPC ...
F01P 3/20 (2013.01); B01D 53/9418 (2013.01); B01D 53/9495 (2013.01); B01J 23/44 (2013.01); B01J 29/06 (2013.01); B01J 35/0006 (2013.01); B01J 35/04 (2013.01); F01N 3/035 (2013.01); F01N 3/103 (2013.01); F01N 3/208 (2013.01); F01N 3/2033 (2013.01); F01N 3/2066 (2013.01); F01N 3/36 (2013.01); F01N 13/009 (2014.06); F01N 13/011 (2014.06); F02B 23/02 (2013.01); F02B 37/00 (2013.01); B01D 2255/1021 (2013.01); B01D 2255/1023 (2013.01); B01D 2255/50 (2013.01); F01N 2260/024 (2013.01); F01N 2610/01 (2013.01); F01N 2610/02 (2013.01); F01N 2610/03 (2013.01); F01N 2610/11 (2013.01); F01N 2610/1453 (2013.01); F01P 2060/12 (2013.01); Y02T 10/125 (2013.01); Y02T 10/144 (2013.01); Y02T 10/24 (2013.01);
Abstract

An exhaust gas control system includes an upstream purification device disposed in an exhaust passage of the internal combustion engine, a downstream purification device disposed in a portion of the exhaust passage downstream from the upstream purification device, a fuel addition valve disposed in a portion of the exhaust passage upstream from the upstream purification device, and a urea addition valve disposed in a portion of the exhaust passage between the upstream purification device and the downstream purification device, and a cooling device. The cooling device is configured such that refrigerant cools the fuel addition valve first and then cools the urea addition valve subsequent to the fuel addition valve.

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