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Diesel Exhaust Fluid:
To meet 2010 Diesel Emission Standards mandated by EPA, most equipment
manufacturers have opted to utilize Selective Catalytic Reduction,
more commonly referred to as SCR. One of the main components of
an SCR system is the introduction of Diesel Exhaust Fluid into the
exhaust stream. This action coupled with an SCR catalyst reduces
NOx to near zero levels.
What is Diesel Exhaust Fluid?
Diesel Exhaust Fluid (DEF) is the reactant necessary for the functionality
of the SCR system. The primary reactants for urea production are
ammonia (NH3) and carbon dioxide (CO2). The raw materials used to
produce the ammonia and carbon dioxide vary, but include natural
gas, coal, or other petroleum products. A majority of the urea produced
today is used as a fertilizer, due to its nitrogen content. Pure
urea is solid at room temperature. Diesel Exhaust Fluid is prepared
by dissolving solid urea to create 32.5% solution in water. Click
here for more information about DEF.
Take advantage of the video from a Webinar that provides a great
deal of information about SCR and DEF!
Is DEF available?
Cummins Northeast and Cummins Filtration has experience supplying
Urea for stationary markets for the past several years. DEF is currently
available in a variety of options – call your nearest CNE
Parts Department for more details.
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