US 12,442,323 B2
Systems and methods for controlling a dosing module
Masoud Ziabakhsh Deilami, Columbus, IN (US); Joe V. Hill, Columbus, IN (US); Jens Honeck, Ahorn (DE); and Ralf Rohrmueller, Faulbach (DE)
Assigned to Cummins Emission Solutions Inc., Columbus, IN (US)
Filed by Cummins Emission Solutions Inc., Columbus, IN (US)
Filed on Dec. 5, 2024, as Appl. No. 18/970,558.
Application 18/970,558 is a continuation of application No. 18/673,920, filed on May 24, 2024, granted, now 12,209,521.
Claims priority of provisional application 63/469,111, filed on May 26, 2023.
Prior Publication US 2025/0092808 A1, Mar. 20, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. F01N 3/20 (2006.01)
CPC F01N 3/206 (2013.01) [F01N 2610/146 (2013.01); F01N 2900/1808 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A controller for an exhaust aftertreatment system, the controller configured to:
receive a pressure signal from a pressure sensor, the pressure sensor configured to generate the pressure signal based on a pressure of treatment fluid in a downstream dosing module;
determine a pressure measurement based on the pressure signal;
determine a first injection amount based on the pressure measurement;
cause an upstream injector of an upstream dosing module to inject the treatment fluid according to the first injection amount;
determine a second injection amount based on the pressure measurement and a resistance of a variable resistor; and
cause a downstream injector of the downstream dosing module to inject the treatment fluid according to the second injection amount.