Lean-burn combustion in SI engines can significantly reduce fuel consumption but NOx reduction becomes challenging because classic three-way catalyst (TWC) is no more efficient. Urea-SCR is then an interesting alternative solution because of its high NOx conversion efficiency without any additional fuel consumption.The coupling between two SI lean-burn engines (stratified and homogeneous combustion) and a urea-SCR catalyst was simulated on the NEDC cycle. Simulation results showed that the SCR efficiency would comply with the limits required by future Euro 5/6 regulations. Associated urea solution consumptions were estimated thanks to a simplified model.Finally, a comparison with a Diesel application was also made. It showed that the required amount of reducing agent remained significantly higher for SI lean-burn engines than for Diesel engine.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Simulation of Urea-SCR Process Applied to Lean-burn SI Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE 2009 Powertrains Fuels and Lubricants Meeting ; 2009



    Erscheinungsdatum :

    02.11.2009




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Simulation of urea-SCR process applied to lean-burn spark ignition engines

    Zinola,S. / Raux,S. / Dabadie,J.C. et al. | Kraftfahrwesen | 2009


    Lean Burn Engines

    Perin, Marcio / Achek, Thiago | SAE Technical Papers | 2013


    Catalyst for lean burn engines

    Wilkins,A.J. / Harrison,B. / Johnson Matthey Research Centre,GB | Kraftfahrwesen | 1985


    Ignition systems for lean burn engines

    Schwarz,H. / Robert Bosch,Stuttgart | Kraftfahrwesen | 1979


    Catalyst selection for lean burn combustion engines

    Vaughen,M.R. / Hammerle,R.H. / Ford Motor,Research Staff,US | Kraftfahrwesen | 1987