Patent ID: 7631491

Claim:
A method for passively regenerating particulate filters, catalyzed soot filters and NOx adsorber catalysts for a vehicle having a compression ignition engine having an engine control module (ECM) including an integrated engine and emission system map, and an integrated starter/alternator/flywheel/retarder assembly, comprising: sensing the condition of the particulate filters, catalyzed soot filters, and NOx adsorber catalysts and generating an initiate cleaning cycle signal upon sensing that the filters and catalysts require cleaning; monitoring operation of the engine and vehicle to determine the engine speed and vehicle speed and generating an engine speed/vehicle speed operating signal; receiving the initiate passive cleaning engine cycle signal and the engine speed vehicle speed operating signal; and initiating engine control parameter adjustments to modify base engine operation exhaust NOx/particulate matter ratio map in the ECM to a passive regeneration NOx/particulate matter regeneration map to promote passive regeneration of the filters.