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BLUETEC DIESEL TECHNOLOGY
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BLUETEC DIESEL TECHNOLOGY

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The latest from Mercedes for removing the NOx from the emission.

The latest from Mercedes for removing the NOx from the emission.

Published in Automotive
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Transcript

  • 1.
  • 2. GOING GREEN WITH BLUEBLUETEC Diesel Technology
    Saju S
    09MAE038
  • 3. BLUETEC Diesel technology
  • 4. BLUETEC Diesel technology
    Recirculates a portion of an engine's exhaust gas back to the engine cylinders.
    • EGR reduces the amount of Nox
    But...
    • Reduces the specific heat ratio of the combustion gases and hence the power
    • 5. Increase in particulate emissions
    • 6. HC DeNOx as a non-selective NOx reduction method using HC components in suitable catalytic converters.
    • 7. HC DeNOx processes have only a very narrow NOx reduction temperature window and are therefore mainly effective in urban cycles.
  • BLUETEC Diesel technology
    DOC – Direct Oxidation Catalyst
    DPF – Diesel Particulate Filter
    NSC – NOx Storage catalyst
    SCR – Selective Catalytic reaction
  • 8. BLUETEC Diesel technology
    • Break down pollutants from diesel engines in the exhaust stream through a chemical process.
    • 9. Monolith honeycomb substrate coated with platinum group metal catalyst, packaged in a stainless steel container
    • 10. Porous honeycomb structure that catches the soot as it passes through.
    • 11. Removes a majority of
    • 12. NOx
    • 13. Particulate matter (think black, cough-inducing soot)
    • 14. Unburned hydrocarbons from burned diesel fuel
  • BLUETEC Diesel technology
  • 15. BLUETEC Diesel technology
    • A close-coupled oxidation catalyst
    • 16. An advanced NOx storage catalyst (NSC)
    • 17. A particulate filter
    • 18. 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
  • 19. BLUETEC Diesel technology
  • 20. BLUETEC Diesel technology
    • A close-coupled oxidation catalyst
    • 21. A particulate filter
    • 22. A catalyst implemented with an SCR coating.
    • 23. An AdBlue dosing Valve
  • BLUETEC Diesel technology
    Intermittent injection of metered quantity of AdBLUE solution is controlled by the ECU
  • 24. BLUETEC Diesel technology
  • 25. BLUETEC Diesel technology
    The use of a NOx storage catalytic converter for NOx aftertreatment leads to a further impact to the fuel consumption
  • 26. BLUETEC Diesel technology
  • 27. BLUETEC Diesel technology
  • 28. 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.
  • 29. 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
  • 30. 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
  • 31. BLUETEC Diesel technology
  • 32. BLUETEC Diesel technology