Quote:
Originally Posted by cfg83
It looks like 2012 VW TDIs will have the urea injection system (in place of the DPF?!?!?
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Not in place of the DPF, but IN ADDITION to the DPF. The DPF takes care of the particulates. The SCR takes care of the NOx.
I think SCR was inevitable for VW. There's only so much NOx that a NOx sponge can take care of. Future emission standards will require SCR in one form or another because of its effectiveness and simplicity.