US 11,702,972 B2
Exhaust gas/reactant mixing assembly
Michael Mayer, Bempflingen (DE); Konstantin Kappes, 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 Mar. 24, 2022, as Appl. No. 17/703,636.
Claims priority of application No. 10 2021 107 463.0 (DE), filed on Mar. 25, 2021.
Prior Publication US 2022/0307403 A1, Sep. 29, 2022
Int. Cl. F01N 3/20 (2006.01); F01N 13/10 (2010.01)
CPC F01N 3/2066 (2013.01) [F01N 13/107 (2013.01); F01N 2240/20 (2013.01); F01N 2260/14 (2013.01); F01N 2470/30 (2013.01); F01N 2610/02 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An exhaust gas/reactant mixing assembly for an exhaust gas system of an internal combustion engine, the exhaust gas/reactant mixing assembly comprising:
a mixing channel defining a longitudinal axis (L) and being configured to extend along said longitudinal axis (L);
an exhaust gas supply channel arranged upstream of said mixing channel;
a junction region whereat said exhaust gas supply channel opens into said mixing channel;
said junction region including at least two junction channel sections opening into said mixture channel to conduct a flow of exhaust gas from said exhaust gas channel into said mixture channel;
a reactant delivery unit for delivering reactant (R) into said mixing channel;
a mixing channel housing having a mixing channel housing base and a mixing channel housing peripheral wall, said mixing channel being formed in said mixing channel housing, said at least two junction channel sections being open to said mixing channel in the region of said mixing channel housing peripheral wall at peripheral regions of said mixing channel housing peripheral wall lying opposite one another relative to said mixing channel longitudinal axis (L); and,
wherein main exhaust gas outflow directions (A1, A2) for exhaust gas flowing out of said at least two junction channel sections into the mixing channel lie substantially in a plane orthogonal to said longitudinal axis (L) and have a flow direction component that is substantially tangential relative to said longitudinal axis (L).