DEF Quick Facts - SCR vs EGR
Q: What is the difference between SCR and EGR?
A: SCR uses an after treatment system to reduce NOx emissions outside of the engine by dosing the exhaust stream with a small amount of Diesel Exhaust Fluid.
EGR is a technique to reduce NOx emissions by recirculating a portion of an engine’s exhaust gas back to the engine cylinders.
top