The fresh catalytic activities of both a production Pt-Pd catalyst and a GMR Pd-promoted Ag catalyst were evaluated in back-to-back emissions tests on an experimental Detroit Diesel Allison (DDA) 6V-92TA methanol-fueled engine. Both the 13-mode steady-state and transient heavy-duty diesel engine Federal Test Procedures were employed. The production catalyst was characterized by relatively high conversions (70-90%) of unburned methanol and carbon monoxide in both the transient and 13-mode tests. However, the production catalyst promoted the partial oxidation of unburned methanol to formaldehyde, as indicated by large negative apparent conversions of formaldehyde in both the transient and steady-state tests (-77% transient; -188% 13-mode). In contrast, the Pd-promoted Ag catalyst converted formaldehyde with good efficiency (-90% in the 13-mode test and -50% in the hot transient test) but was much less efficient than the production catalyst for converting unburned methanol and carbon monoxide.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Catalyst Evaluation on a Detroit Diesel Allison 6V-92TA Methanol-Fueled Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Lipari, F. (Autor:in) / Mitchell, P. J. (Autor:in) / Warburton, R. C. (Autor:in) / McCabe, R. W. (Autor:in) / Scruggs, W. F. (Autor:in)

    Kongress:

    1987 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1987



    Erscheinungsdatum :

    01.11.1987




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Catalyst evaluation on a Detroit Diesel Allison 6V-92TA methanol-fueled engine

    McCabe,R.W. / Mitchell,P.J. / Lipari,F. et al. | Kraftfahrwesen | 1987


    Development of Detroit diesel allison 6V-92TA methanol fueled coach engine

    Toepel, R.R. / Bennethum, J.E. / Heruth, R.E. | Tema Archiv | 1983


    Development of Detroit Diesel Allison 6V-92TA Methanol Fueled Coach Engine

    Bennethum, J. E. / Heruth, R. E. / Toepel, R. R. | SAE Technical Papers | 1983


    Development of Detroit Diesel Allison 6V-92TA Methanol Fueled Coach Engine

    Toepel,R.R. / Bennethum,J.E. / Heruth,R.E. et al. | Kraftfahrwesen | 1983


    Engine Improvements AT Detroit Diesel Allison

    Detroit Diesel Allison,US | Kraftfahrwesen | 1979