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

Claim 0:
1. A method, comprising:
receiving, by a controller, 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, by the controller, an adsorption amount of soot 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;
comparing, by the controller, the adsorption amount of soot to a predefined adsorption amount limit;
in response to the adsorption amount of soot exceeding the predefined adsorption amount limit, initiating, by the controller, an exhaust cleaning event to remove at least some accumulated soot in the exhaust aftertreatment system;
receiving, by the controller, exhaust gas data during the exhaust cleaning event;
determining, by the controller, a desorption amount of soot 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, by the controller, the desorption amount of soot to a predefined desorption limit; and
ceasing, by the controller, the exhaust cleaning event based on the comparison.