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

Claim 7:
8. A non-transitory computer-readable media storing instructions therein that, when executed by at least one processor, causes the at least one processor to perform operations comprising:
receiving 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;
determining an adsorption amount of particulate matter in the exhaust aftertreatment system coupled to an engine 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;
comparing 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, initiating an exhaust cleaning event to remove at least some particulate matter from the exhaust aftertreatment system;
receiving exhaust gas data during the exhaust cleaning event;
determining 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;
comparing the desorption amount of particulate matter to a predefined desorption limit; and
ceasing the exhaust cleaning event based on the comparison.