US 12,345,194 B2
Mixing arrangement for an exhaust-gas system of an internal combustion engine
Philipp Weinmann, Esslingen (DE); Heike Többen, Uhingen (DE); and Mathias Rothfuss, Waiblingen (DE)
Assigned to Purem GmbH, Neunkirchen (DE)
Filed by Purem GmbH, Neunkirchen (DE)
Filed on Aug. 24, 2023, as Appl. No. 18/455,394.
Claims priority of application No. 10 2022 121 456.7 (DE), filed on Aug. 25, 2022.
Prior Publication US 2024/0068390 A1, Feb. 29, 2024
Int. Cl. F01N 3/28 (2006.01); F01N 3/20 (2006.01); F01N 13/14 (2010.01)
CPC F01N 3/2892 (2013.01) [F01N 3/206 (2013.01); F01N 3/2066 (2013.01); F01N 13/141 (2013.01); F01N 2240/20 (2013.01); F01N 2470/24 (2013.01); F01N 2610/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A mixing arrangement for an exhaust-gas system of an internal combustion engine for mixing exhaust gas and reactant, the mixing arrangement comprising:
an exhaust-gas guide delimiting an exhaust-gas flow volume and extending in a direction of a longitudinal axis;
a reactant dispenser configured to dispense reactant into said exhaust-gas flow volume;
an exhaust-gas flow volume divider arranged downstream of said reactant dispenser;
said exhaust-gas flow volume divider being configured to divide the exhaust-gas flow volume in a dividing length region into a plurality of partial exhaust-gas flow volumes and including a plurality of dividing bodies nested one inside the other for providing a radially staggered arrangement of said exhaust-gas guide and said plurality of dividing bodies in said dividing length region;
said plurality of partial exhaust-gas flow volumes including a central partial exhaust-gas flow volume and a plurality of partial exhaust-gas flow volumes surrounding said central partial exhaust-gas flow volume in an annular manner; and
a total surface provided in the dividing length region by said exhaust-gas guide and said plurality of dividing bodies providing an evaporation surface for evaporating reactant dispensed by said reactant dispenser upstream of said exhaust-gas flow volume divider.