Quote:
Originally Posted by nhdoc
This isn't true, the bluetec E320 does not use the urea injection system (not yet anyway).
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Huh... That's a real head-scratcher. I guess all of us are seriously misinformed -- it's all just vaporware (no pun intended) for now?
Seems you are right, though. I'm cut/pasting below from the mbusa.com website FAQ section... (Emphasis is mine.)
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To meet even more stringent emissions requirements, the BLUETEC system
*could* be equipped with another module — AdBlue injection, replacing the DeNOx storage catalytic converter. A water-based urea solution, AdBlue is carried in its own tank and metered into the exhaust in minute quantities — quantities so small that the tank only needs to be refilled during routinely scheduled maintenance. When AdBlue is injected into pre-cleaned exhaust gas, ammonia (NH3) is released, converting nitrogen oxides into harmless nitrogen (and water) in the downstream SCR catalytic converter. Called SCR for selective catalytic reduction, this process creates the most effective method of diesel exhaust gas after-treatment currently available. In Europe, AdBlue injection has already proven effective in more than 15,000 Mercedes-Benz commercial vehicles.
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Cheers, John