Patent ID: 11898480
Assignee: CUMMINS INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 16:
17. A system, comprising:
a controller coupled to an engine and an exhaust aftertreatment system, the controller comprising at least one processing circuit comprising at least one memory coupled to at least one processor, the controller structured to:
receive data regarding an exhaust gas flow rate of exhaust gas at a particular location and an amount of soot in the exhaust gas at the particular location in an exhaust aftertreatment system, wherein the particular location in the exhaust aftertreatment system is a selective catalytic reduction (SCR) inlet;
determine an adsorption amount of particulate matter in the exhaust aftertreatment system based on the exhaust gas flow rate of the exhaust gas at the particular location and the amount of soot in the exhaust gas at the particular location;
compare the adsorption amount of particulate matter to a predefined adsorption amount limit;
in response to the adsorption amount of particulate matter exceeding the predefined adsorption amount limit, initiate an exhaust cleaning event to remove at least some accumulated particulate matter in the exhaust aftertreatment system;
receive exhaust gas data during the exhaust cleaning event;
determine a desorption amount of particulate matter based on the exhaust gas data, wherein a buffer is applied to determine the desorption amount, and wherein the buffer is a predefined period of time the exhaust data is collected before the desorption amount of soot is determined;
compare the desorption amount of particulate matter to a predefined desorption limit; and
cease the exhaust cleaning event based on the comparison.