People who think of this as a self-cleaning (we did) for the DPF are practicing a little wishful thinking. To truly clean the DPF involves taking the filter out of the exhaust system and putting
Answered by Honest John. Because the DPF is under the car, not 'close coupled' in the exhaust manifold, the car needs to be driven quite a long way (50 miles) at 2000 - 2500 rpm to get the DPF hot enough to promote a passive regeneration. An active regeneration will happen automatically, but if the DPF is too stuffed up with soot for this to
Passive regeneration happens naturally while driving without the driver having to initiate the cleaning process. In order for the engine’s exhaust gases to reach high enough temperatures for the soot and ash to be burned off (greater than 350°C or 662°F), the vehicle must be driving at 70 mph or above for at least 45 minutes.
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before cleaning, they do a flow test and measure differential pressure across the dpf. then do the same after cleaning, which gives a clear indication of how well it has worked. cleaning from memory was a combination of chemicals / heat and pressure. both guys I spoke to asked the same question. what do you do with the vehicle. tow a heavy boat
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how do you clean a dpf filter while driving
