DEF fluid in heavy equipment !!

[1strodeo]

This is a brief explanation thats in a powerpoint presentation I have on it :

SCR works by injecting a very precise amount of DEF into the vehicle’s hot exhaust stream where the urea is converted into ammonia.
Once inside the SCR catalyst, the ammonia gas forms a chemical reaction with the NOx emitted by the engine.
As a result of this chemical reaction, SCR converts NOx into water vapor and harmless nitrogen gas.