Emission Control Systems

DPF (Diesel Particulate Filter)

The DPF system changes it’s characteristics depending on the driving conditions the vehicle is under. Storage, Soot conversion and Filter regeneration. Passive Regeneration: is the situation under normal driving conditions where conversion of soot into CO2 is constant. For excessive accumulation of soot particulates, they are stored until the correct conditions are met. Active Regeneration: As the ECM measures the soot content of the DPF through sensors, it will determine the soot quantity and operating conditions, and take action to regenerate the DPF in order to burn off any excessive soot accumulated. Forced Regeneration: This is a function of our diagnostic equipment where it has been determined that the DPF soot content has exceeded the maximum allowed. Usually signified by a warning light to the driver. Remember, A blocked DPF is not a fault. It is a symptom of another fault causing it to block!