Existing diesel particulate filters for heavy duty diesel engines have relatively low soot oxidation rates, which have prevented them from being used as emission reduction in many applications.
CCT (Catalytic Combustion Technology) developed by STT Emtec uses diesel fuel from the vehicle injected into the exhaust stream causing exothermic reaction in the catalyst upstream of the filter. The released heat increases temperature of the particulate filter, promoting oxidation of soot collected in the filter media.
Using this emission system, makes it possible to retrofit vehicles already equipped with passive particulate filters as well as new vehicles previously not suitable for use with passive particulate filters.
The system is suitable for all types of heavy-duty applications where passive filters have failed to work due to difficult duty cycle with regards to, among others, low exhaust gas temperature.
The CCT system guarantees that the filter is regenerated as often as needed.