US 12,228,061 B2
Decomposition chamber with guide swirl mixer
Gaurav Hemant Pandit, Columbus, IN (US); Allick Mounir Olive, Columbus, IN (US); Sagar Maruti Jarali, Belagavi (IN); Narenthiran Thangamuthu, Nasiyanur (IN); Ramesh Ramavath, Turkayamjal (IN); Alex Harrington, Columbus, IN (US); Samuel Johnson, Columbus, IN (US); Sriram Narayanasamy, Greenwood, IN (US); Enoch Nanduru, Pune (IN); and George Eugene Mavroudis, Oregon, WI (US)
Assigned to Cummins Emission Solutions Inc., Columbus, IN (US)
Filed by Cummins Emission Solutions Inc., Columbus, IN (US)
Filed on Jun. 28, 2022, as Appl. No. 17/851,361.
Claims priority of application No. 202141029362 (IN), filed on Jun. 30, 2021.
Prior Publication US 2023/0003158 A1, Jan. 5, 2023
Int. Cl. F01N 3/20 (2006.01); B01D 53/94 (2006.01); B01F 23/213 (2022.01); B01F 25/313 (2022.01); B01F 25/431 (2022.01); F01N 3/28 (2006.01)
CPC F01N 3/2066 (2013.01) [B01D 53/9418 (2013.01); B01D 53/9431 (2013.01); B01F 23/2132 (2022.01); B01F 25/3131 (2022.01); B01F 25/431 (2022.01); F01N 3/2892 (2013.01); F01N 2610/02 (2013.01); F01N 2610/1453 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A decomposition chamber for an exhaust aftertreatment system, the decomposition chamber comprising:
an inlet conduit configured to receive exhaust, the inlet conduit centered on an inlet conduit axis;
a decomposition conduit coupled to the inlet conduit;
an endcap coupled to the decomposition conduit;
an injector coupled to the endcap and configured to provide reductant into the decomposition conduit along an injection axis; and
a guide swirl mixer coupled to the endcap and disposed within the decomposition conduit wherein:
the guide swirl mixer has:
a first edge at which the guide swirl mixer is attached to the endcap,
a second edge that extends from the first edge in a direction away from the endcap, the second edge located on an inlet conduit side of the injection axis,
a third edge that extends from the first edge in a direction away from the endcap, the third edge being on a side opposite the inlet conduit side of the injection axis, and
a fourth edge that extends from the second edge to the third edge at a side opposite the endcap; and
wherein the guide swirl mixer includes:
a flat segment that extends from the second edge, and
a curved segment that curves only partially around the injection axis and extends from the flat segment to the third edge.