logo

For the Inventor, By the Inventor

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 11674426 B1

PDFFull Text
Date of Patent:
Jun. 13, 2023

Filed:

Sep. 28, 2022

Exhaust aftertreatment system

Applicant:

Volvo Truck Corporation, Gothenburg, SE;

Inventor:

Irman Svraka, Tranås, SE;

Assignee:

VOLVO TRUCK CORPORATION, Gothenburg, SE;

Attorneys:

Venable LLP

Jeffri A Kaminski

Primary Examiner:

Jesse S Bogue

Int. Cl.
CPC ...
F01N 3/28 (2006.01); F01N 3/30 (2006.01); F01N 3/021 (2006.01); F01N 3/10 (2006.01); F01N 13/00 (2010.01); B01D 53/94 (2006.01); B01F 23/21 (2022.01); B01F 27/00 (2022.01); B01F 35/221 (2022.01); B01F 35/32 (2022.01); B01F 35/21 (2022.01); H02K 7/14 (2006.01); F01N 3/20 (2006.01);
U.S. Cl.
CPC ...
F01N 3/2892 (2013.01); B01D 53/944 (2013.01); B01D 53/9418 (2013.01); B01D 53/9431 (2013.01); B01D 53/9477 (2013.01); B01D 53/9495 (2013.01); B01F 23/21 (2022.01); B01F 27/00 (2022.01); B01F 35/2115 (2022.01); B01F 35/21111 (2022.01); B01F 35/221422 (2022.01); B01F 35/3204 (2022.01); F01N 3/021 (2013.01); F01N 3/106 (2013.01); F01N 3/2066 (2013.01); F01N 3/30 (2013.01); F01N 13/0097 (2014.06); H02K 7/14 (2013.01); F01N 2610/02 (2013.01); F01N 2610/1453 (2013.01);
Abstract

An exhaust aftertreatment system for an internal combustion engine includes an outer casing defining an exhaust flow path for exhaust gases from the internal combustion engine, a selective catalytic reduction unit provided in the exhaust flow path for reducing nitrogen oxides, a urea dosing device for adding urea to the exhaust flow upstream of the selective catalytic reduction unit, and a rotatable mixer device for mixing the urea with exhaust gases upstream of the selective catalytic reduction unit. The exhaust aftertreatment system further comprises an air inlet valve provided upstream of the mixer device for introducing air into the exhaust flow path, and an electric motor arranged for rotating the mixer device to create a suction of air into the exhaust flow path via the air inlet valve.

Find Patent Forward Citations

Loading…