Selective Catalytic Reduction

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Diesel-powered trucks are the workhorses of today's society, delivering the vast majority of goods used in North America. Now, after two decades of dramatic emissions reductions, the North American heavy truck industry has been challenged to develop even cleaner diesel engine solutions to meet the Environmental Protection Agency's new standards for 2010.

The leading solution is Selective Catalytic Reduction (SCR) - an emissions-reduction technology with the ability to deliver near-zero emissions of nitrogen oxides (NOx), a smog-causing pollutant and greenhouse gas. SCR's performance has been proved in millions of miles of real-world truck operations in other countries, as well as in long-term field tests in the U.S.

SCR reduces NOx emissions to very low levels, while at the same time delivering excellent fuel economy and reliability. The system doesn't change the design or operation of the basic engine. Rathe