US 11,905,874 B2
Real-time control of reductant droplet spray momentum and in-exhaust spray distribution
Samuel Johnson, East Wenatchee, WA (US); Nassim Khaled, Decatur, GA (US); and Patrick C. Hudson, Indianapolis, IN (US)
Assigned to Cummins Emission Solutions Inc., Columbus, IN (US)
Filed by CUMMINS EMISSION SOLUTIONS INC., Columbus, IN (US)
Filed on Aug. 29, 2022, as Appl. No. 17/897,467.
Application 17/897,467 is a continuation of application No. 17/233,868, filed on Apr. 19, 2021, granted, now 11,459,928.
Application 17/233,868 is a continuation of application No. 16/467,434, granted, now 11,028,754, issued on Jun. 8, 2021, previously published as PCT/US2017/064923, filed on Dec. 6, 2017.
Claims priority of provisional application 62/431,092, filed on Dec. 7, 2016.
Prior Publication US 2022/0412240 A1, Dec. 29, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. F01N 3/20 (2006.01); F01N 9/00 (2006.01); B01D 53/94 (2006.01)
CPC F01N 3/208 (2013.01) [F01N 9/00 (2013.01); B01D 53/9418 (2013.01); F01N 2610/02 (2013.01); F01N 2610/146 (2013.01); F01N 2610/1453 (2013.01); F01N 2900/08 (2013.01); F01N 2900/1404 (2013.01); F01N 2900/1406 (2013.01); F01N 2900/1411 (2013.01); F01N 2900/1808 (2013.01); F01N 2900/1811 (2013.01); F01N 2900/1821 (2013.01); F01N 2900/1824 (2013.01); Y02T 10/12 (2013.01)] 23 Claims
OG exemplary drawing
 
21. A system comprising:
a reductant injection system for injecting reductant into an exhaust gas based on an injection parameter or a supply parameter; and
a controller configured to:
access a current exhaust gas condition parameter, a current vehicle condition parameter which comprises at least one of a vehicle speed, a vehicle tire pressure, a vehicle inclination angle, a vehicle drive gear selection, a vehicle mass, a vehicle weight, a vehicle trailer weight, or a vehicle air line pressure, and a current reductant condition parameter which comprises at least one of a reductant temperature, reductant momentum based on an injection supply pressure, a reductant density, a reductant air supply pressure, a reductant air supply flow rate, or a reductant spray cone angle,
determine one or more control parameters based on a control model and as a function of the accessed current exhaust gas condition parameter, the accessed current vehicle condition parameter, and the accessed current reductant condition parameter, and
modify a value of the injection parameter or the supply parameter based on the one or more control parameters to control a reductant spray momentum, a reductant droplet momentum, or a reductant momentum vector from the reductant injection system so as to provide a target spray droplet distribution or a target spray distribution.