SCR Technology Effective Against Emissions

Mack Trucks Inc says its Selective Catalytic Reduction technology (SCR) is a possible solution to the emission reduction targets facing heavy-duty diesel engines. Mack has added a concept tractor equipped with the SCR system to its Hagerstown MD-based intra-company parts distribution fleet.

According to Stephen F Homcha, executive vice-president of Mack's Class 8 programs, the technology has cut transient emissions of nitrogen oxides (NOx) by up to 70% and particulate matter up to 25%.

"Steady-state emissions of NOx have dropped by up to 85%, and with no sacrifice to the fuel economy," Homcha said.

Siemens Westinghouse Power Corp is a partner in the project. Siemens developed the exhaust aftertreatment technology under the name SINOx, and it originally was used to reduce NOx emissions in power plants.

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