Particulate Filter: Description

Fig 1: Diesel Particulate Filter

Courtesy of DAIMLERCHRYSLER CORP.

1 - DIESEL PARTICULATE FILTER (DPF)

2 - DIFFERENTIAL PRESSURE PORTS

3 - EXHAUST TEMPERATURE SENSORS

4 - OXYGEN SENSORS

5 - MAIN CATALYST

6 - PRE CATALYST

A diesel particulate filter (1) DPF is installed for exhaust gas after-treatment. The DPF is located downstream of the main oxidation catalyst (5). The DPF filters, stores and burns particulate matter (soot) that is generated during the combustion process. The soot is oxidized to carbon dioxide CO2 at exhaust temperatures over 600° C (1,112° F).