Ultra lean-burn natural gas engines offer the potential for lower emissions and higher efficiency than conventional SI engines. Combustion instabilities near the lean limit can be addressed by partially stratifying the in-cylinder charge. The Partially Stratified Charge (PSC) approach involves micro-direct-injection of pure fuel, or a fuel-air mixture, to create a rich zone in the region of the spark-plug. This has been demonstrated to improve combustion in an ultra-lean bulk mixture. An experimental premixing apparatus was devised to investigate the effect of changing the stoichiometry of the micro-direct-injected charge. In conjunction, a numerical methodology was used as an aid to understanding the complex in-cylinder processes. Although rich premixed micro-injection improved engine performance over the homogeneous case, the fastest heat release rate was found to occur with a pure fuel PSC charge.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    The Effect of Varying the Injected Charge Stoichiometry in a Partially Stratified Charge Natural Gas Engine


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Reynolds, C.C.O. (Autor:in) / Andreassi, L. (Autor:in) / Evans, R.L. (Autor:in) / Cordiner, S. (Autor:in) / Mulone, V. (Autor:in)

    Kongress:

    SAE 2005 World Congress & Exhibition ; 2005



    Erscheinungsdatum :

    2005-04-11




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    The effect of varying the injected charge stoichiometry in a partially stratified charge natural gas engine

    Reynolds,C.C. / Evans,R.L. / Andreassi,L. et al. | Kraftfahrwesen | 2005


    The Ultra Lean Burn Partially Stratified Charge Natural Gas Engine

    Mezo, A. / Davy, M. / Evans, R.L. | SAE Technical Papers | 2009


    Partially Stratified Charge Natural Gas Combustion: A LES Numerical Analysis

    Chan, Edward / Bartolucci, Lorenzo / Cordiner, Stefano et al. | SAE Technical Papers | 2015


    Partially stratified charge natural gas combustion: a LES numerical analysis

    Bartolucci,L. / Cordiner,S. / Mulone,V. et al. | Kraftfahrwesen | 2015