What is active regeneration?

Active Regeneration is utilized on vehicles that have a low duty cycle. It refers to the process where exhaust gas temperatures between 3500C-5000C (5720 F-9720 F) cannot be sustained during normal operating conditions. In this instance, an auxiliary ECU controlled system is utilized to increase the exhaust system internal temperatures into the 3500C-5000C (5720 F-9720 F) range to burn off the accumulated soot/particulate matter from the DPF. Active regeneration systems inject diesel fuel into the exhaust stream (post combustion) or into the combustion chamber during the exhaust stroke creating a controlled thermal event that rapidly raises the exhaust temperatures above 3500C-5000C (5720 F-9720 F) to burn off the accumulated soot in the DPF.