It does turn into ammonia that is what attaches to the Nox and gets trapped in the scr filter however there is never a 100% capture of the ammonia. That is the the next stage some manufactures have NH3 sensors that read the amount of ammonia slip and some have added a clean up filter after the scr to catch any excess ammoniaDEF is urea and water and when heated to exhaust temperatures in the vicinity of a catalyst breaks down into nitrogen and water. This link provides a better explanation. It does not form ammonia.
What is diesel exhaust fluid and why is it more important than ever?
Diesel Exhaust Fluid and selective catalytic reduction are working to make diesel cleaner more efficient than ever.www.cnet.com
Yeah, no. There is no trap in the SCR side. Ammonia is released, there is no conversion. Proper dosing minimizes free ammonia. The NH³ sensor helps minimize the cat pi$$ stench.It does turn into ammonia that is what attaches to the Nox and gets trapped in the scr filter however there is never a 100% capture of the ammonia. That is the the next stage some manufactures have NH3 sensors that read the amount of ammonia slip and some have added a clean up filter after the scr to catch any excess ammonia
Except that some mfrs cease dosing during service or parked regenerationDEF is consumed all the time, has nothing to do with regen.
There is no trap in the SCR side. Ammonia is released,
I fixed it. Got rid of those restrictive mufflers so deaf people can feel the Jakes on full song downhill with 60k on her back.View attachment 282290