WASHINGTON – The EPA dismissed Navistar’s bold claim that its rivals’ SCR engine systems are routinely ‘tricked’ and circumvent the 2010 emissions regulation, but the agency did propose tougher ...
PACCAR has patented a method to evaluate Diesel Exhaust Fluid (DEF) quality in emissions aftertreatment systems. By analyzing NOx conversion efficiency in SCR units, the system adjusts DEF dosing to ...
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