Patent ID: 8484956

Claim:
A regeneration control system for use with a diesel engine having a diesel particulate filter (DPF) in an exhaust system, a regeneration device positioned upstream of the DPF in the exhaust system, a wide band oxygen sensor positioned upstream of the regeneration device in the exhaust system for sensing a percentage of oxygen (O 2 %) in an exhaust from the diesel engine, and an engine speed sensor operably coupled to the diesel engine, comprising: an aftertreatment controller operably coupled to the wide band oxygen sensor for receiving O 2 % information therefrom, and to the engine speed sensor for receiving engine speed information therefrom, the aftertreatment controller programmed to initiate regeneration based on the O 2 % information and the engine speed information; and wherein the aftertreatment controller is programmed to determine total soot production from the O 2 % information and from the engine speed information, the aftertreatment controller initiating regeneration when the total soot production exceeds a predetermined threshold.