Patent ID: 7543446

Claim:
A method of controlling regeneration of exhaust gas aftertreatment components coupled to an exhaust manifold of an internal combustion engine, the method comprising: monitoring a particulate load of a particulate filter comprising one of the exhaust gas aftertreatment components, monitoring a sulfur oxide (SOx) load of a NOx catalyst comprising another of the exhaust gas aftertreatment components, determining a vehicle speed corresponding to a road speed of a vehicle carrying the engine and the exhaust gas aftertreatment components, initiating regeneration of the particulate filter if the particulate load is greater than a first particulate load threshold and the road speed is greater than a first speed threshold, and terminating regeneration of the particulate filter and initiating SOx regeneration of the NOx catalyst if the particulate filter is being regenerated and the SOx load is greater than a first SOx load threshold.