PACCAR Inc
METHODS FOR OPERATION OF AN EMISSIONS AFTERTREATMENT SYSTEM FOR NOX CONTROL DURING REGENERATION OF DIESEL PARTICULATE FILTER

Abstract:

The present disclosure describes methods for operating an EAS including a close coupled SCR unit, a downstream SCR unit, a diesel oxidation catalyst unit (DOC) and a diesel particulate filter (DPF). The methods utilize the close coupled SCR unit to manage NOx emissions from the EAS during regeneration of a diesel particulate filter (DPF).