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    Cummins says no to SCR in 2010 heavy engines

    August 1, 2014 12:00AM by Martin Smith

    NASHVILLE, Tenn. — Heavy-duty Cummins engines will not use selective catalytic reduction (SCR) to meet 2010 nitrous-oxide emissions limits like a handful of other engine makers. Nor will they need any other form of NOx aftertreatment.