Patent ID: 9032719
Filing Date: 2015-05-19
Classification: F01N,G01M,G01N,Y02T

Abstract:
1. A method for particulate filter performance monitoring in an exhaust gas treatment system, comprising: monitoring, by a monitoring system comprising processing circuitry, a current received from a soot sensor in the exhaust gas treatment system; comparing, by the monitoring system, the current to a soot sensor current threshold; associating an accumulated engine out soot threshold with a driving profile; selecting, by the monitoring system, the accumulated engine out soot threshold based on the driving profile; based on determining that the current is greater than or equal to the soot sensor current threshold, comparing an accumulated engine out soot value to the accumulated engine out soot threshold by the monitoring system; and based on determining that the accumulated engine out soot value is less than the accumulated engine out soot threshold, setting a particulate filter fault by the monitoring system.