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Experimental characterization of closely coupled split isooctane sprays under flash boiling conditions

Author

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  • Wang, Ziman
  • Badawy, Tawfik
  • Wang, Bo
  • Jiang, Yizhou
  • Xu, Hongming

Abstract

The characteristics of isooctane spray in the near field and far field were experimentally studied under various flash boiling conditions representing both low load and high load hot engine operation conditions. Closely coupled split injection strategy was also employed to study the influence of flash boiling on the primary breakup of split injections and the interaction between split injections. It was found that flash boiling considerably boosted the spray atomization, especially during the end of injection stage when a large amount of liquid fuel with low speed was observed. The interaction between split injections in liquid phase was significantly weakened under flash boiling condition due to the enhanced atomization but the interaction in gaseous phase was boosted because of the resultant quicker evaporation. The effect of dwell interval on the spray behavior under flash boiling condition was profound, causing significant variation for the delivered fuel mass and spray characteristics.

Suggested Citation

  • Wang, Ziman & Badawy, Tawfik & Wang, Bo & Jiang, Yizhou & Xu, Hongming, 2017. "Experimental characterization of closely coupled split isooctane sprays under flash boiling conditions," Applied Energy, Elsevier, vol. 193(C), pages 199-209.
    • Handle: RePEc:eee:appene:v:193:y:2017:i:c:p:199-209
    DOI: 10.1016/j.apenergy.2017.02.009
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    References listed on IDEAS

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    1. Wang, Ziman & Ding, Haichun & Ma, Xiao & Xu, Hongming & Wyszynski, Miroslaw L., 2016. "Ultra-high speed imaging study of the diesel spray close to the injector tip at the initial opening stage with split injection," Applied Energy, Elsevier, vol. 163(C), pages 105-117.
    2. Wang, Ziman & Ding, Haichun & Ma, Xiao & Xu, Hongming & Wyszynski, Miroslaw L., 2016. "Ultra-high speed imaging study of the diesel spray close to the injector tip at the initial opening stage with single injection," Applied Energy, Elsevier, vol. 165(C), pages 335-344.
    3. Wang, Buyu & Mosbach, Sebastian & Schmutzhard, Sebastian & Shuai, Shijin & Huang, Yaqing & Kraft, Markus, 2016. "Modelling soot formation from wall films in a gasoline direct injection engine using a detailed population balance model," Applied Energy, Elsevier, vol. 163(C), pages 154-166.
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    Cited by:

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    2. Kaźmierski, Bartosz & Kapusta, Łukasz Jan, 2023. "The importance of individual spray properties in performance improvement of a urea-SCR system employing flash-boiling injection," Applied Energy, Elsevier, vol. 329(C).

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