Soot reduction Emigreen® soot reduction systems use a monolithic ceramic filter that is extremely efficient at capturing the soot particles emitted by diesel engines. To optimise filtration efficiency and extend the operational life of the filter, the particulate matter that builds up in the filter has to be removed. The process of burning off the accumulated soot is known as filter regeneration.
Filter regeneration Filter regeneration involves heating the filter to a high temperature. In engines with sufficiently high exhaust temperatures, the exhaust stream contains enough thermal energy to initiate and sustain the regeneration process. This typically occurs with engines operating under load for a sufficient length of time.