When it comes to reducing the nitrogen oxide (NOx) emissions of diesel-burning commercial vehicles, selective catalytic reduction (SCR) is firmly in place as today’s technology. And these systems are ...

Selective Catalytic Reduction (SCR) is an after treatment technology that uses a urea based diesel exhaust fluid (DEF) and a catalytic converter to significantly reduce oxides of nitrogen (NOx) ...

The process that can convert pollution into benign by-products is called selective catalytic reduction, or SCR. Until now, it has been unclear how this reaction actually occurs, and contradictions ...

Emission regulations for combustion systems have been in place for more than half a century and in the 1990’s, the Clean Air Act put a spotlight on emissions specifically from industrial boilers.

For our industry, the year 2027 means meeting lower NOx standards while using less fuel. Under old diesel design rules, this would be quite problematic because NOx forms at the high cylinder ...

In a brief filed in November in its ongoing litigation with the U.S. Environmental Protection Agency, truck and engine maker Navistar argued that EPA violated federal law not only by allowing its ...

For more than 30 years, elaborate and highly effective catalytic air pollution control systems have been abating volatile organic compounds (VOCs) and NOx at utility size power plants. Yet operators ...

The efficiency and long-term performance of an SCR System is largely dependent on several key design considerations of the various equipment within the SCR System. When complex NOx reductions on ...

As traumatic as it was at the time, the addition of selective catalytic reduction and diesel particulate filter aftertreatment to modern trucks will likely go down as one of the industry’s greatest ...

NO x emissions and air pollution from diesel engines are a global concern because of their potential effects on human health. Researchers all over the world are developing new and improved methods to ...