US 12,281,605 B2
Exhaust gas aftertreatment system
Z. Gerald Liu, Madison, WI (US); Apoorv Kalyankar, Madison, WI (US); Achuth Munnannur, Verona, WI (US); and Niklas Schmidt, Madison, WI (US)
Assigned to CUMMINS EMISION SOLUTIONS INC., Columbus, IN (US)
Appl. No. 18/291,362
Filed by CUMMINS EMISSION SOLUTIONS INC., Columbus, IN (US)
PCT Filed Jul. 26, 2022, PCT No. PCT/US2022/038268
§ 371(c)(1), (2) Date Jan. 23, 2024,
PCT Pub. No. WO2023/009473, PCT Pub. Date Feb. 2, 2023.
Claims priority of provisional application 63/226,092, filed on Jul. 27, 2021.
Prior Publication US 2024/0376839 A1, Nov. 14, 2024
Int. Cl. F01N 3/02 (2006.01); F01N 3/021 (2006.01); F01N 3/20 (2006.01); F01N 13/08 (2010.01)
CPC F01N 3/20 (2013.01) [F01N 3/021 (2013.01); F01N 13/08 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An exhaust gas aftertreatment system comprising:
an introduction conduit centered on a conduit center axis;
a dosing module coupled to the introduction conduit and comprising an injector that is configured to provide a treatment fluid into the introduction conduit and that is defined by an injection axis;
a mixer disposed within the introduction conduit and comprising a mixer body configured to receive exhaust gas and the treatment fluid; and
an outlet flange comprising:
an outlet flange body centered on an outlet flange center axis, the outlet flange body comprising:
an outlet flange body inner portion coupled to the mixer body and extending radially outward from the mixer body,
an outlet flange body outer portion coupled to the introduction conduit, separating the outlet flange body inner portion from the introduction conduit, and extending at an outlet flange angle away from the outlet flange body inner portion and downstream of the mixer, the outlet flange angle being obtuse,
an outlet flange opening extending through the outlet flange body inner portion, and
a plurality of outlet flange perforations extending through the outlet flange body outer portion and arrayed circumferentially around a portion of the outlet flange opening.