International Leaders in DPF Cleaning

Overview Emissions Regulations and Environmental Zones

Diesel engines produce emissions which can contribute to airborne pollution including:

  • Particulate Matter (PM) mostly consisting of Soot (carbon) and Ash (from the combustion of fuel and oil additives).
  • Nitrogen Oxide, NO and Nitrogen Dioxide, NO2 (collectively known as NOx).
  • Unburnt hydrocarbons from fuel (HC).
  • Carbon Monoxide (CO)

These emissions are damaging to health and legislation has been introduced around the world to combat airborne pollution.  This includes the Euro regulations (covering the EU), the EPA regulations in the US along with regional standards in China, India, Japan and Brazil.  Airborne pollution is most severe in major urban centres and many cities including London, Berlin, Amsterdam, Paris, Rome and Beijing have created Low Emissions Zones or E-Zones to improve local air quality.

To meet these emissions regulations, most diesel vehicles are fitted with exhaust after-treatment devices.  These can be fitted as a retrofit system (for older vehicles) or as a standard feature which is now fitted to most new vehicles.  Exhaust after-treatment systems include various catalysts to reduce levels of CO, HC or NOx along with a Diesel Particulate Filter (DPF) to reduce PM.

Eminox CRT containing ceramic DPF

In Europe, DPFs were first fitted to diesel cars as long ago as 2001 and they became widespread from 2009 onwards with the introduction of the Euro 5 emissions regulations for cars.  Similarly, all new trucks (and other heavy-duty vehicles) sold from January 2014 will be fitted with DPFs to meet the new Euro VI legislation.  In the US, trucks have been fitted with DPFs since the introduction of the EPA07 legislation (which has been superseded by the EPA10 legislation).  Furthermore, DPFs are becoming increasingly common in non-road/off-highway markets (such as agriculture and construction) to meet the requirements of Tier IV/Stage 4.
Ceramex technology has been used for over 20 years to clean DPFs and remove any accumulated PM during periodic servicing.