What is the function of the Diesel Particulate Filter (DPF / Partikelfilter) on a heavy commercial vehicle, and what is DPF Regeneration?

1. It filters soot particles from diesel exhaust; regeneration raises exhaust temperature under controlled conditions to oxidize trapped soot and prevent excessive filter loading
2. It removes nitrogen oxides by dosing AdBlue directly into the filter element
3. It filters fuel before it enters the fuel injectors
4. It cools the cabin air