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 ...

Diesel engines across agriculture, trucking and construction have been sidelined by a tiny part that was supposed to keep the air cleaner. After years of complaints about failure-prone diesel exhaust ...

Software overrides for diesel exhaust fluid sensors that are in perilously short supply are making their way from truck manufacturers to repair shops, helping keep equipment on the road and prevent ...

The EPA is targeting faulty DEF sensors with new guidance allowing a different type of sensor to monitor NOx emissions in diesel engines. In the Trump administration’s latest steps to address the ...