Catalysed Diesel Particulate Filter (cDPF)
The ecotrap™ can be supplied as a coated wallflow diesel particulate filter (DPF) with or without a diesel
oxidation catalyst, dependent upon the engine usage, duty cycle and consequent exhaust temperatures.

– Lowest whole life fleet costs

– On-site fitting available across the UK and overseas

– Bespoke designed systems for any on and off road diesel engine application

Uniquely as a retrofit DPF, the ecotrap™ features a silicon carbide (SIC) Wallflow ‘closed’ filter substrate which forces the exhaust gases through a porous filter wall, whilst capturing soot particles within the filter (which cannot then pass into the exhaust outlet).

The SIC substrate which is coated in a precious metal coating draws oxygen molecules to its surface and then oxidises (ie combusts) the trapped soot particles passively at temperatures as low as 250 degrees celsius. Addition of a DOC can reduce the temperature of passive regeneration even further.

Once combusted, the soot particles turn to ash which need to be removed periodically by cleaning. As well as combusting the soot particles (PM10 and PM2.5) from within the exhaust the catalytic reaction which also takes place also converts the toxic CO and HC into harmless carbon dioxide and water vapour.

The ecotrap™ technology reduces CO, HC and Particulates by over 95%. The ecotrap™ filter is approved by TFL (for London LEZ use), VCA (for reduced road tax RPC) and EST (for use in the London NRMM low emission zone) and VERT (worldwide standard).