Systems and methods for cold operation NOx burden reduction

A system comprising:

• a controller coupled to an aftertreatment system, the controller configured to:
• initiate a low engine-out NOx (LEON) mode by controlling a component of a vehicle having the aftertreatment system to decrease an instantaneous engine-out NOx (EONOx) amount;
• compare a temperature of the aftertreatment system during the LEON mode to a warm-operation threshold temperature;
• responsive to determining that the temperature of the aftertreatment system exceeds the warm-operation threshold temperature, disengage the LEON mode;
• responsive to determining that the temperature of the aftertreatment system is below the warm-up operation threshold temperature, compare information indicative of an operating status of the vehicle to a LEON exit threshold, wherein the information indicative of the operation status of the vehicle during the LEON mode comprises an amount of soot build-up on a particulate filter of the aftertreatment system and the LEON exit threshold comprises a soot build-up threshold;
• and
• disengage the LEON mode responsive to determining that the information indicative of the operating status of the vehicle during the LEON mode exceeds the LEON exit threshold.

A controller comprising:

• one or more processors;
• and
• a memory storing instructions that, when executed by the one or more processors, cause the one or more processors to:
• initiate a low engine-out NOx (LEON) mode by controlling a component of a vehicle having an aftertreatment system to decrease an engine-out NOx (EONOx) amount;
• compare a temperature of the aftertreatment system during the LEON mode to a warm-operation threshold temperature;
• responsive to determining that the temperature of the aftertreatment system exceeds the warm-operation threshold temperature, disengage the LEON mode;
• responsive to determining that the temperature of the aftertreatment system is below the warm-up operation threshold temperature, compare information indicative of an operating status of the vehicle to a LEON exit threshold, wherein the information indicative of the operation status of the vehicle during the LEON mode comprises an amount of soot build-up on a particulate filter of the aftertreatment system and the LEON exit threshold comprises a soot build-up threshold;
• and
• disengage the LEON mode responsive to determining that the information indicative of the operating status of the vehicle during the LEON mode exceeds the LEON exit threshold.