In the ultra-lean combustion mode, the combustion temperature is relatively low, which is expected to avoid the high-temperature NOx generation. And it also can use excess air to fully oxidize CO, HC and Soot, to achieve cleaner combustion. But at the same time, ultra-lean combustion has difficulties in ignition and flame propagation.This paper used CONVERGE to simulate the combustion process and products of a new ultra-lean combustion mode, which ignited the ultra-lean premixed fuel/air mixture with the spark-ignited micro-fuel-jet, in a constant-volume vessel with a 6-hole GDI injector. The differences of combustion processes and products were simulated for two spark-ignition positions, including ‘on’ the micro-jet spray and ‘between’ two micro-jet sprays. It was found that the combustion duration (the time for burned-fuel-ratio from 10% to 90%) could be shortened by about 14.3% if igniting ‘on’ the micro-jet spray, but the amount of NOx generated would increase about 21.0%. Meanwhile, compared with the homogeneous premixed combustion with traditional spark ignition at the same global fuel/air ratio, the new ultra-lean combustion mode with igniting ‘on’ the micro-jet spray had lower CO and NOx emissions, reduced by 49.5% and 23.3% respectively. In addition, the three ultra-lean ignition methods all have extremely low Soot products. The heat release of this new mode was more concentrated with combustion duration shortened by about 20.2%, which would be beneficial to achieve more efficient and cleaner combustion.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Simulation Research on Ultra-Lean Constant-Volume Combustion Initiated by Spark-Ignited Micro-Fuel-Jet


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Li, Liguang (Autor:in) / Li, Minglong (Autor:in) / Long, Quan (Autor:in) / Zhou, Yang (Autor:in) / Hu, Zongjie (Autor:in)

    Kongress:

    WCX SAE World Congress Experience ; 2022



    Erscheinungsdatum :

    2022-03-29




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Simulation Research on Ultra-Lean Constant-Volume Combustion Initiated by Spark-Ignited Micro-Fuel-Jet

    Long, Quan / Li, Minglong / Zhou, Yang et al. | British Library Conference Proceedings | 2022


    Combustion of Premixed Ammonia and Air Initiated by Spark- ignited Micro-gasoline-jet in a Constant Volume Combustible Vessel

    Yu, Wangchao / Li, Minglong / Long, Quan et al. | British Library Conference Proceedings | 2023


    Flame and wall temperature visualization of spark-ignited ultra-lean combustion engine

    Goto,Y. / Traffic Safety and Nuisance Research Inst.,JP | Kraftfahrwesen | 1990


    Lean Combustion in Spark-Ignited Internal Combustion Engines - A Review

    Wood, Carl G. / Hess, Clay C. / Germane, Geoff J. | SAE Technical Papers | 1983


    Lean combustion in spark-ignited internal combustion engines A review

    Germane,G.J. / Wood,C.G. / Hess,C.C. et al. | Kraftfahrwesen | 1983