The SMF-AR diesel particulate filter regenerates fully and automatically without machine downtimes. Pressure and temperature sensors, together with an airflow meter, monitor the load level of the filter and trigger regeneration according to an adjustable strategy.
During regeneration a heating element uses electrical energy without direct contact to ignite the soot, which then completely burns off over the entire filter. The electrical energy required for regeneration is so low that it can be taken from the on-board supply without any problems. Soot burn-off has no negative effect on the exhaust emission or performance of the machine.
In order to ignite the soot electrically without direct contact, the normal ignition temperature of approximately 600°C is reduced to approx. 400°C with the aid of an additive. The additive is automatically introduced with the correct dose to the diesel fuel tank from a separate tank.
During combustion in the engine the additive bonds to the soot. Subsequently, in the filter, this ensures easy ignition of the soot by the heating element. The performance and chemical composition of the additive used corresponds to additives which have already been in use for some years in cars. These additives do not affect or harm the engine.