This can take pace in two ways, on motorway-type runs, when exhaust temperature is high enough to burn off the soot or through forced DPF regeneration causing the engine management computer (ECU) to make small adjustments to increase the exhaust temperature and initiate regeneration when build up gets to 45%. This is called 'regeneration' - where the collected soot is burnt off at high temperature to leave the lowest achievable ash residue.Īutomatic vehicle DPF regeneration if possible is carried out by over injection of fuel to generate higher exhaust temperatures and in-turn burn off particulate build up. ![]() In lay man's terms DPF's catch bits of soot or particulate in the DPF unit fitted to the exhaust system, being a filter they have to be maintained and kept at an acceptable saturation level to maintain performance. If your vehicle was manufactured after 2005 please call or check online to see if a DPF has been fitted to your vehicle. ![]() ![]() The majority of cars produced after 2009 will have one fitted. The exhaust emissions standards for new cars have required a DPF (Diesel Particulate Filter) in the exhaust of most diesel cars since 2004.
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