US 11,834,979 B2
Liquid only lance injector
Samuel Johnson, East Wenatchee, WA (US); John G. Buechler, Indianapolis, IN (US); Matthew K. Volmerding, Columbus, IN (US); Jacob W. Brown, Columbus, IN (US); and Gaurav Hemant Pandit, Columbus, IN (US)
Assigned to Cummins Emission Solutions Inc., Columbus, IN (US)
Filed by CUMMINS EMISSION SOLUTIONS INC., Columbus, IN (US)
Filed on Jun. 17, 2021, as Appl. No. 17/350,262.
Application 17/350,262 is a division of application No. 16/909,010, filed on Jun. 23, 2020, granted, now 11,268,417.
Claims priority of provisional application 62/867,086, filed on Jun. 26, 2019.
Prior Publication US 2021/0310393 A1, Oct. 7, 2021
Int. Cl. F01N 3/20 (2006.01); F01N 13/14 (2010.01)
CPC F01N 3/206 (2013.01) [F01N 13/146 (2013.01); F01N 2610/146 (2013.01); F01N 2610/1406 (2013.01); F01N 2610/1433 (2013.01); F01N 2610/1473 (2013.01); F01N 2900/1808 (2013.01); F01N 2900/1821 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A lance injector assembly for an exhaust component, comprising:
a shaft configured to extend into an exhaust conduit of the exhaust component, the shaft being hollow so as to define a channel therethrough, wherein the shaft has a first end and a second end opposite the first end, and wherein an opening is defined in a wall of the shaft proximate to the second end of the shaft;
a cap coupled to a first end of the shaft, the cap comprising:
an annular portion,
a central hub disposed circumferentially inwards of the annular portion around a longitudinal axis of the cap, and
a plurality of radial ribs extending from the central hub to the annular portion and coupled to the annular portion such that gaps are defined between adjacent ribs of the plurality of ribs; and
a supply line extending through the central hub into the shaft, such that part of the supply line is disposed within the channel defined by the shaft, wherein a nozzle is disposed at a downstream end of the supply line, the nozzle being fluidly coupled to the shaft around the opening such that reductant is able to flow from the nozzle through the opening and into an exhaust gas flowing through the exhaust conduit,
wherein air is present in the space between the supply line and the wall of the shaft, the air inhibiting heat transfer to the supply line.