Hitting the def a little hard

[HPSimpson]

Here are some excerpts from a very informative article with regard to DEF:

STEP 1: DEF Becomes Ammonia and Isocyanic Acid: (NH2)2CO → NH3 + HNCO

STEP 2: The Isocyanic Acid chemically breaks down with water into Carbon Dioxide and Ammonia:
HNCO +  H2O → CO2 + NH3 overall which is this: (NH2)2CO + H2O → 2NH3 + CO2

STEP 3: At this point during the chemical reaction Ammonia will, in the presence of oxygen and a catalyst, will reduce nitrogen oxides:
2NO + 2NH3 + ½O2 -> 2N2 + 3H2O and 3NO2 + 4NH3 -> 7/2N2 + 6H2O

STEP 4: The overall reduction of NOx by urea is:
2(NH2)2CO + 4NO + O2 → 4N2 + 4H2O + 2CO2 and 2(NH2) 2CO + 3NO2 -> 7/2N2 + 4H2O + 2CO2
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Or, in more simple terms:

The vast majority of these systems use diesel exhaust fluid (mixture of urea and deionized water) sprayed into the exhaust system to break down the generated NOx into harmless nitrogen and water molecules.
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Chances are all is well and good.

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Thanks for the information!

 

[bcbender]

My 20 drinks alot more than my 04