US 12,503,969 B2
Reductant delivery system for exhaust gas aftertreatment system
Mahendra Mittapalli, Pune (IN); Enoch Nanduru, Pune (IN); Samuel Johnson, East Wenatchee, WA (US); Ryan M. Johnson, Cottage Grove, WI (US); Kartiki Jagtap, Pune (IN); Vinay Kumar Joshi, Pune (IN); and Aishwarya Pravin Joshi, Raleigh, NC (US)
Assigned to Cummins Emission Solutions Inc., Columbus, IN (US)
Appl. No. 17/782,085
Filed by Cummins Emission Solutions Inc., Columbus, IN (US)
PCT Filed Dec. 3, 2019, PCT No. PCT/US2019/064232
§ 371(c)(1), (2) Date Jun. 2, 2022,
PCT Pub. No. WO2021/112826, PCT Pub. Date Jun. 10, 2021.
Prior Publication US 2023/0003159 A1, Jan. 5, 2023
Int. Cl. F01N 3/28 (2006.01); F01N 3/20 (2006.01)
CPC F01N 3/2892 (2013.01) [F01N 3/2073 (2013.01); F01N 2240/20 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A reductant delivery system comprising:
an inlet body comprising:
an inlet body coupler surrounding an inlet body inlet that is configured to receive exhaust gas;
an inlet body outer transfer shell coupled to the inlet body coupler, the inlet body outer transfer shell comprising:
an inlet body outer transfer shell inner surface, and
an inlet body outer transfer shell outlet extending through the inlet body outer transfer shell inner surface;
an inlet body outer mounting shell coupled to the inlet body coupler and the inlet body outer transfer shell, the inlet body outer mounting shell and the inlet body outer transfer shell defining an inlet body cavity, the inlet body outer mounting shell comprising an inlet body outer mounting shell inner surface; and
an inlet body inner shell, an entirety of which is contained within the inlet body cavity, the inlet body inner shell comprising:
an inlet body inner shell first flange coupled to the inlet body outer mounting shell inner surface,
an inlet body inner shell second flange coupled to the inlet body outer mounting shell inner surface, and
an inlet body inner shell wall contiguous with the inlet body inner shell first flange and the inlet body inner shell second flange, and separated from the inlet body outer transfer shell inner surface;
an outlet body comprising:
an outlet body coupler surrounding an outlet body outlet that is configured to provide the exhaust gas, and
an outlet body shell coupled to the outlet body coupler, the outlet body shell comprising an outlet body shell inlet; and
an outer transfer tube coupled to the inlet body outer transfer shell around the inlet body outer transfer shell outlet and coupled to the outlet body shell around the outlet body shell inlet.