Diesel Progress / Diesel Progress June 2006 / Mack, Volvo Say It’s SCR For 2010

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Mack, Volvo Say It’s SCR For 2010

Mack Trucks, Inc. and Volvo Trucks North America both said they will use SCR to meet the 2010 U.S. on-highway diesel emissions regulations.

Both manufacturers will use a combination of diesel particulate filters, along with exhaust gas recirculation (EGR) technology and selective catalytic reduction (SCR) to satisfy the nitrogen oxides (NOx) portion of the federal diesel engine emissions regulations scheduled to take effect in 2010.

The 2010 regulations, developed by the U.S. Environmental Protection Agency (EPA), call for NOx emissions levels to be reduced more than 80 percent from the standard set to take effect in January 2007.

Mack said the base engines for its 2010 solution will be its MP series, which utilize High-Performance Exhaust Gas Recirculation (HEGR) to meet current and 2007 NOx standards.

Volvo’s said its solution for 2010 will also include a diesel particulate filter (DPF) and exhaust gas recirculation (EGR). Volvo has employed EGR on its engines in North America since late 2002, while DPFs will be used starting in 2007 on Volvo’s new family of diesel engines.

Mack also confirmed that its EPA '10 solution will feature the diesel particulate filter (DPF) being deployed for 2007, as the required particulate matter emissions levels remain the same for 2010.

Mack said it has been successfully running SCR systems on prototype trucks since 2000, logging more than two million miles on 10 customer vehicles. Mack's parent, the Volvo Group, has logged more than 23 million miles of SCR road testing in Europe, and this year began production of SCR-equipped vehicles to meet the Euro 4 emissions standards that take effect October 1st.