fr:Car Terms:D:Diesel particulate Filter MA/FR

SEAT Glossary

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D

Diesel particulate filter

Diesel particulate filters reduce the number of soot particles contained in the exhaust gas of diesel engines, thus ensuring even fewer emissions and more environmentally-friendly engine performance.

At SEAT, the only system we install is maintenance-free without any additives. However, the soot deposited in the filter still needs to be disposed of so that the filter does not become clogged. For this purpose, the ceramic filter element is fitted with a noble metal-containing coating that acts in two ways:

1. During passive regeneration, the soot laid down in the filter is converted to CO2 in a slow, non-destructive manner. This process occurs from 350 - 500°C and takes place continuously, especially in motorway driving, without requiring any special measures.

2. In the event of prolonged operation at low load, for example in city traffic, an active increase in the exhaust temperature to around 600°C takes care of additional filter regeneration approximately every 1,000 to 1,200 kilometres. At this temperature, the particles accumulated in the filter burn away.

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