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 ...
2010-model diesels are running well and turning in better fuel economy than their EPA-'07-spec predecessors, according to reports we've heard at industry meetings and in conversations with fleet ...
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 ...