Mack Trucks Inc diesel engines have been certified by the US Environmental Protection Agency and the California Air Resources Board to meet the near-zero emissions standards that take effect in January 2010.

The Mack MP7 and MP8 engines are now officially recognized to meet the strictest diesel emissions standards in the world. EPA certification was issued November 16, and the CARB certification November 10.

The Mack engines have been fully certified to meet EPA's standards without the use of emissions credits. Mack says it is the first truck manufacturer to have its heavy-duty diesel engines certified for 2010 by both EPA and CARB.

This major step forward is driven by Mack's use of selective catalytic reduction (SCR) to bring nitrogen oxides (NOx) emissions down to EPA'10 levels. Mack tested SCR in North America customer fleets for more than two years, accumulating 5 million miles of field testing. The technology has billions of miles of real-world experience in other markets. The Mack SCR technology also essentially eliminates active regenerations of the diesel particulate filter (DPF) to save even more fuel and further reduce operating costs.

Enabling Mack to use the MP series without major modifications to engines or cooling systems, SCR permitted Mack engineers to retune the MP engines for additional power, lower heat rejection, and reduced fuel consumption.