The Environmental Protection Agency (EPA) is developing emission standards for nonroad spark-ignition engines rated over 19 kW. Existing emission standards adopted by the California Air Resources Board for these engines were derived from emission testing with new engines, with an approximate adjustment applied to take deterioration into account. This paper describes subsequent testing with two LPG-fueled engines that had accumulated several thousand hours of operation with closed-loop control and three-way catalysts. These engines were removed from forklift trucks for characterization and optimization of emission levels. Emissions were measured over a wide range of steady-state points and several transient duty cycles. Optimized emission levels from the aged systems were generally below 1.5 g/hp-hr THC+NOx and 10 g/hp-hr CO.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Evaluation of Durable Emission Controls for Large Nonroad SI Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Stout, Alan (Autor:in) / Salardino, David (Autor:in) / White, Jeff J. (Autor:in) / Ulmet, Vlad (Autor:in)

    Kongress:

    Spring Fuels & Lubricants Meeting & Exhibition ; 2002



    Erscheinungsdatum :

    06.05.2002




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Evaluation of durable emission controls for large nonroad si engines

    Ulmet,V. / White,J.J. / Stout,A. et al. | Kraftfahrwesen | 2002


    Demonstration of Advanced Emission Controls for Nonroad SI Class II Engines

    Olson, Brian / McDonald, Joseph / Murawski, Marc | SAE Technical Papers | 2009


    Demonstration of advanced emission controls for nonroad spark ignition class II engines

    McDonald,J. / Olson,B. / Murawski,M. et al. | Kraftfahrwesen | 2009



    Development of a transient duty cycle for large nonroad si engines

    Ulmet,V. / White,J.J. / Stout,A. et al. | Kraftfahrwesen | 2002