fuel milage
Okay, yall have convinced me to stay with the diesel.:B now I am curious if yall are seeing any difference in milage with the new vehicles using the exhaust fluid. What are the chances of doing away w...
Forum Discussion
OK, guys you better read up on how the DEF works, it's not injected into the engine, it's injected into the exhaust stream. Here's a cut and paste on the GM setup:
Selective Catalytic Reduction (SCR )
The SCR system is an after-treatment system, since it treats the vehicle’s exhaust after combustion.
Here’s how it works:
A fine mist of DEF is injected into the exhaust while the engine is running. The heat from the exhaust converts the DEF into ammonia. When the ammonia, mixed with exhaust gases, reaches the SCR catalyst, the NOx emissions are broken down.
The Diesel Particulate Filter (DPF) then captures soot to incinerate it during regeneration cycles.
Water vapor, nitrogen and reduced emissions exit the exhaust system
So in the end, it has no effect on mileage or power and any gains or losses are a direct result from other changes.
Selective Catalytic Reduction (SCR )
The SCR system is an after-treatment system, since it treats the vehicle’s exhaust after combustion.
Here’s how it works:
A fine mist of DEF is injected into the exhaust while the engine is running. The heat from the exhaust converts the DEF into ammonia. When the ammonia, mixed with exhaust gases, reaches the SCR catalyst, the NOx emissions are broken down.
The Diesel Particulate Filter (DPF) then captures soot to incinerate it during regeneration cycles.
Water vapor, nitrogen and reduced emissions exit the exhaust system
So in the end, it has no effect on mileage or power and any gains or losses are a direct result from other changes.
