A new era in emission standards
In January 2011, new emission standards for 130 - 560 kW (174 – 751 HP) off-road diesel engines went into effect in the US and Europe. In the US, the new standards are incorporated in the EPA Nonroad Regulation Tier 4A. In Europe, the new standards are incorporated in the EU Nonroad-Directive Stage 3B.
Other countries (e.g. Canada) intend to follow the US and European regulations.
Tier 4A / Stage 3B requires a decrease of particulate matter by no less than 90% and of NOx emissions by 50% compared to current levels. Regulation regarding the use of low sulfur fuel is also included.
Tier 4A / Stage 3B is just the beginning. By 2014, Tier 4B / Stage 4 regulations will require particulate matter and
NOx levels to be reduced by more than 90% for most power categories, to near zero levels.
The EPA Tier 4 standards apply to both variable and constant speed engines, primarily affecting larger portable compressors and generators. In Europe, Stage 3B only applies to variable speed engines which means only our portable compressors are affected.