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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 12404796 B1

PDFFull Text
Date of Patent:
Sep. 02, 2025

Filed:

Dec. 04, 2023

Exhaust-gas treatment arrangement

Applicant:

Purem Gmbh, Neunkirchen, DE;

Inventors:

Silas Bräuning, Denkendorf, DE;

Wolfgang Datz, Tuebingen, DE;

Markus Henzler, Grafenberg, DE;

Oleksandr Velyaev, Stuttgart, DE;

Tobias Wolf, Koengen, DE;

Arthur Wieland, Baltmannsweiler, DE;

Assignee:

Purem GmbH, Neunkirchen, DE;

Attorney:

Walter Ottesen, P.A.

Primary Examiner:

Binh Q Tran

Int. Cl.
CPC ...
F01N 13/00 (2010.01); B01F 25/30 (2022.01); B01F 25/31 (2022.01); B01F 25/41 (2022.01); B01F 25/42 (2022.01); B01F 25/441 (2022.01); B01F 27/50 (2022.01); B01F 27/86 (2022.01); B01F 27/92 (2022.01); F01N 1/08 (2006.01); F01N 3/20 (2006.01);
U.S. Cl.
CPC ...
F01N 13/009 (2014.06); F01N 3/2066 (2013.01); B01F 25/30 (2022.01); B01F 25/311 (2022.01); B01F 25/41 (2022.01); B01F 25/42 (2022.01); B01F 25/44166 (2022.01); B01F 27/50 (2022.01); B01F 27/861 (2022.01); B01F 27/92 (2022.01); F01N 1/086 (2013.01); F01N 2240/20 (2013.01); F01N 2330/38 (2013.01); F01N 2610/03 (2013.01);
Abstract

An exhaust-gas treatment arrangement for an exhaust system of an internal-combustion engine includes a diesel internal-combustion engine. The arrangement includes a first exhaust-gas treatment unit and, downstream of the first exhaust-gas treatment unit, an exhaust-gas treatment assembly. The first exhaust-gas treatment unit and the exhaust-gas treatment assembly are arranged axially succeeding one another in the direction of a longitudinal axis of a flow path encompassing the first exhaust-gas treatment unit and the exhaust-gas treatment assembly. A hydrocarbon-feeding assembly is provided for feeding hydrocarbon into exhaust gas flowing in the flow path. The hydrocarbon-feeding assembly includes a hydrocarbon-dispensing unit dispensing hydrocarbon into the flow path downstream of the first exhaust-gas treatment unit and upstream of the exhaust-gas treatment assembly. A swirl-flow-generating unit is provided in the flow path upstream of the hydrocarbon-dispensing unit.

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