Cost competitive Diesel aftertreatment solution to meet future emissions requirements English Free Members only

  • Category Technical paper
  • Related event International Congress : SIA Powertrain - Rouen 2014 - 21 & 22 May 2014
  • Edition SIA
  • Date 05/21/2014
  • Author R.Argolini, G. Franconi, D. Gessaroli, D.Mercuri, G.Montinaro, P.Olmo - General Motors Powertrain Europe
  • Language English
  • Type PDF file (1.17 Mo)
    (Downloadable immediately on receipt of online payment)
  • Number of pages 10
  • Code R-2014-02-42
  • Fee Free

Moving to the future Euro 6c emission regulation, the best NOx aftertreatment technologies for the next generation of Diesel engines for a European vehicle portfolio have been investigated.
The usage of the Lean NOx Trap (LNT) as a cost competitive solution compared to the under floor active Selective Catalyst Reduction (SCR) configuration has been evaluated. Reduced hardware needs with a considerable cost saving and a minimized customer impact compared to DEF based aftertreatment system are making the LNT an attractive solution, especially for vehicles with relatively low mass and road load.
The performance of second generation LNT system managed by innovative control strategies will be illustrated on new driving cycles considering challenges including aging and sulfur poisoning effects.
Experimental data show, on three different vehicle applications, the NOx conversion efficiency in a potential homologation test on both NEDC and WLTC cycles. On real driving profiles, simulated with an ARTEMIS cycle, it has been proven that both fuel consumption and NOx emission targets can be flexibly balanced. Additional NOx reduction capability can be further achieved in combination with passive underfloor SCR.

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