The DPF system by Albonair

Albonair's diesel particulate filter system (DPF system) consists of a housing developed and produced in-house, with integrated standard particulate filters. Furthermore it is possible to optionally integrate burners, upstream oxidation catalysts and related components.

Together with the individual components that Albonair develops and produces for the diesel particulate filter system, the company also offers system integration into the overall concept of the vehicle. This is done in close cooperation with the engine developers.
Albonair DPF system

Functional principle of the DPF system

Diesel particulate filters (DPFs) are used to reduce soot particulate emissions of diesel engines. These filters can reduce the soot output by 90 to 95 percent. The DPF is usually combined with an upstream oxidation catalyst.

The oxidation catalyst converts the hydrocarbons and the carbon monoxide (CO) into carbon dioxide (CO2) and water (H20). Additionally, part of the nitrogen monoxide (NO) is oxidized into nitrogen dioxide (NO2). In the downstream diesel particulate filter, the NO2 reacts with the deposited soot, causing NO and CO2 to form.

The soot deposits are burned away completely and the system is regenerated. Subsequently, the catalytic coating of the diesel particulate filter converts the NO created during the soot combustion back into NO2, which makes it possible to burn off soot again.

To enable optimal filter regeneration even at low operating temperatures, this "passive" system can be combined with an active process, e.g. a burner.