US 12,392,272 B1
Duct for aftertreatment system
Shib Shankar Biswas, Chennai (IN)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Apr. 16, 2024, as Appl. No. 18/636,439.
Int. Cl. F01N 13/18 (2010.01); F01N 3/10 (2006.01); F01N 3/20 (2006.01); F01N 13/00 (2010.01)
CPC F01N 13/1805 (2013.01) [F01N 3/106 (2013.01); F01N 3/2066 (2013.01); F01N 13/009 (2014.06)] 20 Claims
OG exemplary drawing
 
1. A duct for an aftertreatment system, the duct comprising:
a body defining a first end and a second end;
a flange coupled to the body at the first end of the body, wherein the flange defines an outer edge; and
a projection shaped like a beak, the projection coupled to and extending from the flange along a first direction in a welding zone, wherein the projection and the flange lie in a same plane, wherein the projection defines a first side edge and a second side edge that is angularly spaced apart from the first side edge, wherein the duct is adapted to be coupled with a component of the aftertreatment system via each of the outer edge of the flange, the first side edge of the projection, and the second side edge of the projection, and wherein the component includes at least one of a diesel oxidation catalyst (DOC) of the aftertreatment system and a selective catalytic reduction (SCR) module of the aftertreatment system.