What does the DPF warning light on my dash mean? Where does the Diesel Particulate Filter ( DPF ) sit?Ī diesel particulate filter (DPF) is a device which sits in the exhaust system, it “captures” soot / diesel particulate and other nasty particles so they are not released into atmosphere. This type of regeneration can cause higher than normal fuel usage. This increases the temperature in DPF, burning off the soot and particles that build up in the filter. Active regeneration of the DPF is performed by the ECU triggering a post combustion fuel injection. What happens to the DPF after fuel injection?īelow is an explanation of the different types of regeneration. How long does DPF cleaning take? A DPF clean can take as little as 20 minutes to complete.
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