Patent ID: 8468808
Filing Date: 2013-06-25
Classification: F01N,Y02T

Abstract:
1. A method of controlling regeneration of a particulate filter of an exhaust system of a vehicle, the method comprising: defining a regeneration trigger limit for at least one operating parameter of the vehicle; sensing at least one ambient operating condition; sensing at least one vehicle operating condition; classifying the operation of the vehicle into one of a plurality of driving cycles based upon the sensed at least one ambient operating condition and the sensed at least one vehicle operating condition; modifying the regeneration trigger limit based upon an aggregate time the vehicle is operated in each of the plurality of drive cycles since the previous regeneration of the particulate filter to define a modified regeneration trigger limit; and regenerating the particulate filter when either the modified regeneration trigger limit for the operating parameter is reached, or when a soot model predicts that regeneration is required based upon a measured pressure differential between an upstream pressure of the particulate filter and a downstream pressure of the particulate filter.