Blackthorn can design and supply exhaust sections incorporating silicon carbide wall-flow filters for all diesel engines ranging from 10 kW to 1000 kW or more. The filter elements themselves are usually cylindrical with diameters ranging from 80 to 380 mm and lengths in the range 154 to 380 mm. Cell densities of 90, 150 or 200 per square inch are available.
In the case of larger engines, multiple filters will normally be used in parallel. Because all diesel particle filters need periodic inspection and cleaning, we design the section which incorporates the filter to facilitate this with the minimum of downtime. We are happy to supply a complete exhaust system or merely the filter section which may be designed as a direct replacement for an existing section. Any exhaust sections we supply will normally be made from stainless steel in order to tolerate the heat which will occur during regeneration and also to resist corrosion. We recommend that only stainless steel is used upstream of the filter, because mild or aluminised mild steel tubing will corrode internally and can produce debris which will block the filter. The exhaust is often insulated both to conserve heat in order to improve regeneration and also to reduce the likelihood of injury or damage caused by high surface temperatures. Although a diesel particle filter can be combined with a silencer, in most cases the noise attenuation characteristics of the filter itself will be adequate.
If required, we can also supply filter units with a catalytic coating which, as well as assisting with regeneration, can simultaneously reduce carbon monoxide and hydrocarbon emissions.
