If it hadn't been for the development of copper zeolite as a catalyst to use in reducing nitrogen oxides (NOx), Cummins might have been right alongside Navistar in using increased levels of exhaust ...

Cummins revealed its 2010 on-highway engine lineup, and noted that all of the new engines incorporate selective catalytic reduction (SCR) as part of the emission treatment system. “Aggressive field ...

Cummins Inc. says it will use selective catalytic reduction on its 2010-model heavy duty engines, reversing a previous announcement that it would avoid the urea-dependent aftertreatment by using ...

NASHVILLE. Cummins Inc. announced that the engine maker will not use selective catalytic reduction (SCR) technology—which requires the use of urea—to meet the EPA 2010 emissions regulations NASHVILLE.