3 - Description
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Diesel particles filter
The combustion of diesel fuel results in soot, which is separated in the diesel particle filter. This must be regenerated as the
contamination with soot increases. That means that the soot in the diesel particle filter is burned. The regeneration is based
on a continuous regeneration process, which is activated as soon as the exhaust temperature of 250 °C is exceeded at the
inlet of the exhaust gas after-treatment system. The filter contamination with soot is monitored continuously by the engine
control unit.
Regeneration
The passive particle filter system burns the soot in the filter with the nitrogen oxides in the exhaust which are oxidised in the
DOC beforehand. This process runs continuously once the exhaust temperature has exceeded 250°C. The passive particle
filter system does not contain a burner. A prerequisite for the passive continuous regeneration is having a sufficient ratio of
nitrogen oxides to soot in the raw exhaust gas of the engine.
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