US 12,404,796 B2
Exhaust-gas treatment arrangement
Silas Bräuning, Denkendorf (DE); Wolfgang Datz, Tuebingen (DE); Markus Henzler, Grafenberg (DE); Oleksandr Velyaev, Stuttgart (DE); Tobias Wolf, Koengen (DE); and Arthur Wieland, Baltmannsweiler (DE)
Assigned to Purem GmbH, Neunkirchen (DE)
Filed by Purem GmbH, Neunkirchen (DE)
Filed on Dec. 4, 2023, as Appl. No. 18/528,470.
Claims priority of application No. 10 2022 132 127.4 (DE), filed on Dec. 5, 2022.
Prior Publication US 2024/0183305 A1, Jun. 6, 2024
Int. Cl. 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)
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)] 17 Claims
OG exemplary drawing
 
1. An exhaust-gas treatment arrangement for an exhaust gas system of an internal combustion engine including a diesel internal combustion engine, the exhaust-gas treatment arrangement defining a flow path and comprising: a first exhaust-gas treatment unit;
an exhaust-gas treatment assembly downstream of said first exhaust-gas treatment unit;
said first exhaust-gas treatment unit and said exhaust-gas treatment assembly being arranged axially one after the other in a direction of a longitudinal axis (L2) of said flow path with said flow path including said first exhaust-gas treatment unit and said exhaust-gas treatment assembly;
a hydrocarbon feeding assembly for introducing hydrocarbon into exhaust gas flowing in said flow path;
said hydrocarbon feeding assembly including a hydrocarbon-dispensing unit for dispensing hydrocarbon into said flow path downstream of said first exhaust-gas treatment unit and upstream of said exhaust-gas treatment assembly;
a swirl-flow-generating unit arranged in said flow path upstream of said hydrocarbon-dispensing unit;
a second exhaust-gas treatment unit arranged downstream of said exhaust-gas treatment assembly; and,
an exhaust-gas/reagent mixing section defining a longitudinal axis (L3) and having a mixing duct elongated substantially in a direction of said longitudinal axis (L3) of the mixing section; said exhaust-gas/reagent mixing section further having a reagent-dispensing unit for dispensing reagent into said mixing duct and being disposed downstream of said exhaust-gas treatment assembly and upstream of said second exhaust-gas treatment unit.