This article presents a study related to application of pre-chamber ignition system in heavy duty natural gas engine which, as previously shown by the authors, can extend the limit of fuel-lean combustion and hence improve fuel efficiency and reduce emissions. A previous study about the effect of pre-chamber volume and nozzle diameter on a single cylinder 2 liter truck-size engine resulted in recommendations for optimal pre-chamber geometry settings. The current study is to determine the dependency of those settings on the engine size. For this study, experiments are performed on a single cylinder 9 liter large bore marine engine with similar pre-chamber geometry and a test matrix of similar and scaled pre-chamber volume and nozzle diameter settings. The effect of these variations on main chamber ignition and the following combustion is studied to understand the scalability aspects of pre-chamber ignition. Indicated efficiency and engine-out emission data is also presented. It has been found that the performance of a pre-chamber is strongly affected by the size of the engine is it being used in. Even with the same energy content in the pre-chamber at the time of spark, the resulting initial main chamber heat release has been found to scale with engine size, and hence the optimal settings for pre-chamber volume and nozzle diameter are also found to scale with engine size.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Scalability Aspects of Pre-Chamber Ignition in Heavy Duty Natural Gas Engines


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Shah, Ashish (Autor:in) / Johansson, Bengt (Autor:in) / Tunestal, Per (Autor:in)

    Kongress:

    SAE 2016 World Congress and Exhibition ; 2016



    Erscheinungsdatum :

    2016-04-05




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Effect of Pre-Chamber Volume and Nozzle Diameter on Pre-Chamber Ignition in Heavy Duty Natural Gas Engines

    Shah, Ashish / Johansson, Bengt / Tunestal, Per | SAE Technical Papers | 2015


    Heavy-Duty Compression-Ignition Engines Retrofitted to Spark-Ignition Operation Fueled with Natural Gas

    Ulishney, Christopher / Dumitrescu, Cosmin / Liu, Jinlong et al. | SAE Technical Papers | 2019


    Heavy-duty spark ignition engines fueld with methane

    Gambino, M. / Iannaccone, S. / Unich, A. | Tema Archiv | 1991


    Heavy-duty spark ignition engines fueled with methane

    Gambino, M. / Iannaccone, S. / Unich, A. | Tema Archiv | 1990


    Experiences of heavy-duty alcohol-fuelled diesel-ignition engines

    Bertilsson, B.I. / Gustavsson, L. | Tema Archiv | 1987