Patent ID: 8011179
Filing Date: 2011-09-06
Classification: F01N,Y02T

Abstract:
1. A method of compensating for factors affecting particulate matter accumulation within an aftertreatment element of an engine exhaust system, the method comprising: determining rate of change of flow resistance through the aftertreatment element over time; initiating regeneration to reduce particulate matter accumulation within the aftertreatment element; correlating the determined rate of change of flow resistance through the aftertreatment element over time with at least a model of particulate matter accumulation within the aftertreatment element, the model being based on predetermined values for particulate matter accumulation; controlling regeneration to compensate for an increased rate of particulate matter accumulation in the aftertreatment element determined based on the correlation; enabling a gas induction system to deliver a portion of engine exhaust gases to an air intake system for the engine; and disabling the gas induction system to compensate for the increased rate of particulate matter accumulation.