A catalyst implemented with an SCR coating for furtherimprovement of the NOx reduction and to deal with the sulfur emission which is stored and released from the NSC due to fuel sulfur to ensure the long-term stability.
BLUETEC Diesel technology Intermittent rich fuel mixture is injected which is controlled by the ECU depending on the NOx content in the NSC converter
BLUETEC Diesel technology Requires low sulfur diesel (ULSD) Less then 15 ppm. The SCR-technology costs are negatively influenced by the AdBlue tank and dosing system. The SCR-technology requires replenishment of AdBlue at regular intervals. The low freezing point of urea needs adequate measures for winter functioning. NOx storage exhaust-gas aftertreatment processes, will also lead to increased HC emissions.
BLUETEC Diesel technology BLUETEC has the cleanest diesel emissions. BLUETEC enabled Mercedes Benz E 320 to meet EURO VI norms already. Customers would benefit from better fuel mileage. It is predicted that the diesel sales will quadruple in the next decade and hence an ultimate solution for NOx emissions 20 to 40% better mileage then gasoline
BLUETEC Diesel technology SAE Technical paper - BLUETEC Diesel Technology C. Enderle, G. Vent and M. Paule Daimler AG http://www.mercedes-benz.com/content/mbcom/international/international_website/en/com/Mercedes-Benz_Brand_Galery_BLUETEC.html http://rb-kwin.bosch.com/us/en/powerconsumptionemissions/exhaust-gastreatment/dieselengines/exhaust-gas_management/storagecatalyticconverter.html http://en.wikipedia.org/wiki/BlueTec http://en.wikipedia.org/wiki/EGR#EGR_in_diesel_engines http://www.worldcarfans.com/10601108065/mercedes-benz-bluetec-technology http://alternativefuels.about.com/od/researchdevelopment/a/bluetec.htm