Patent ID: 9114344
Filing Date: 2015-08-25
Classification: B01D,F01N,Y02A,Y02T

Abstract:
1. A method for implementing particulate filter regeneration management, comprising: determining, via a computer processor, if a condition exists that causes a presumptive deviation between a particulate model and actual particulate level conditions of a particulate filter; determining if the condition is caused by a passive regeneration and, if so, setting a first deviation type for the condition; determining if the condition is caused by a residual soot from a previous regeneration event and, if so, setting a second deviation type for the condition; determining if the condition is caused by driving conditions that provide unreliable delta pressure signals and, if so, setting a third deviation type for the condition; determining if the condition is caused by an extended parking condition and, if so, setting a fourth deviation type for the condition; determining a regeneration reset priority for the determined condition based on whether the set deviation type is the first, second, third, or fourth deviation type; determining, based on the set deviation type, which zones of a plurality of zones of an electric heater should be activated to reduce the particulate level of the particulate filter for the determined condition; selectively controlling current to the determined zones to initiate a regeneration event; and estimating a particulate level in the particulate filter once the regeneration event is complete.