US 11,905,904 B2
Systems and methods for ultra-low NOx cold start warmup control and fault diagnosis
Avra Brahma, Fishers, IN (US); and Yongsoon Yoon, Indianapolis, IN (US)
Assigned to Cummins Inc., Columbus, IN (US)
Filed by Cummins Inc., Columbus, IN (US)
Filed on Aug. 9, 2022, as Appl. No. 17/884,473.
Application 17/884,473 is a continuation of application No. 16/829,679, filed on Mar. 25, 2020, granted, now 11,428,181.
Prior Publication US 2022/0381193 A1, Dec. 1, 2022
Int. Cl. F02D 41/06 (2006.01); F01N 11/00 (2006.01)
CPC F02D 41/068 (2013.01) [F01N 11/005 (2013.01); F01N 11/007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system, comprising:
an aftertreatment system including a catalyst; and
a controller coupled to the aftertreatment system, wherein during a warmup period for an engine, the controller is configured to:
determine a value regarding a mass flow rate of exhaust gas based on information received from at least one of the engine or the aftertreatment system;
receive a target value regarding the mass flow rate of the exhaust gas; and
control, based on the value regarding the mass flow rate of the exhaust gas, at least one of the engine, the aftertreatment system, or at least one component associated therewith to converge to the target value regarding the mass flow rate of the exhaust gas.