TEHAG - Model AWF-H -Parti­cu­late Filter System

The »Active Wall-Flow HC-dosing« (AWF h) ) Particulate Filter System is a solution for vehicles and machinery that require low load profiles due to their areas of application and in which the exhaust temperatures repeatedly drop below the critical limits for purely passive regeneration. Depending on the vehicle or machinery application, the system au­tomatically starts regeneration of the particulate filter when the coun­ter­pres­sure exceeds a freely programmable value. During regeneration, the diesel is injected into the exhaust gas, which increases the temperature in the filter to around 600 °C. At these temperatures, the carbon contained in the filtered particulate matter reacts with the residual oxygen in the exhaust. This allows regeneration to work independently from the vehicle/machinery application, effectively eliminating downtime.