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Diesel Particulate Filter

A diesel particulate filter is a system for removing diesel soot from the exhaust gases of diesel engines.
The filter with a catalytic coating works without the need for an additive by using a filter coating containing precious metals which fulfils a dual function. The passive regeneration process involves the slow, environment-protecting conversion of the particulates deposited in the catalytic converter into CO2. This procedure takes place at in a temperature range between 350 – 500 ⁰C, and carries on continuously without the need for any special measures, especially when the vehicle is used predominantly for motorway driving.
Only when the vehicle is operated for longer periods under minimal load, such as in urban traffic, is there an active increase in the exhaust gas temperature every 1,000 to 2,000 kilometres, up to around 600 °C, for additional filter regeneration. The particles deposited in the filter are burned off at this temperature.