DEFMay 16, 2011by tyrussum1
DEF Use in SCR
Selective Catalytic Reduction (SCR) Selective catalytic reduction, or SCR, is a method of converting nitrogen oxides (NOx) into carbon dioxide (CO2) and water. Diesel exhaust fluid, or DEF, is added to a stream of exhaust gas where it reacts with the nitrogen oxides, breaking them down into harmless carbon dioxide and water. Since the late...