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 ...

Cummins Product Manager Kyle Richardson explains the changes coming to the 2027 X15 with the aftertreatment system and the engine itself to meet new EPA 2027 NOx requirements.

Why is NOx such a major concern in the U.S. and elsewhere? NOx consists of roughly 90% to 95% NO and perhaps 5% to 10% NO 2. Those associated with fossil fuel fired boilers and other furnaces are from ...