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Experimental study on effects of ethanol-diesel fuel blended on spray characteristics under ultra-high injection pressure up to 350 MPa

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  • Yu, Yusong

Abstract

In the present study, the atomization characteristics of ethanol-diesel blends fuel spray and shock waves were investigated by using experimental methods under ultra-high injection pressure in the range 200Mpa–350 MPa. A high-speed camera and Schlieren technology were used to visualize the fuel spray morphology and shock waves. The spray tip penetration, velocity and shock wave angle were determined via experimental approaches. Furthermore, the special spray shape under ultra-high injection pressure, such as liquid tail, expanded body and bifurcated structures, was analyzed. To validate the classical spray empirical models, predicted spray penetration results based on two typical models (Dent's and Hiroyasu's model) were compared with experimental data. The results indicated that fuel injection pressure and ethanol volume fraction presented significant effects on the spray evolution. With increasing injection pressure, the spray tip penetration became faster and the induced attached shock waves reveal clearer. The fuel spray jets achieved the larger penetration velocity and more induced shock waves under higher injection pressure or lower ethanol volume fraction.

Suggested Citation

  • Yu, Yusong, 2019. "Experimental study on effects of ethanol-diesel fuel blended on spray characteristics under ultra-high injection pressure up to 350 MPa," Energy, Elsevier, vol. 186(C).
    • Handle: RePEc:eee:energy:v:186:y:2019:i:c:s0360544219314392
    DOI: 10.1016/j.energy.2019.07.098
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    Cited by:

    1. Sun, Daoan & Cai, Wenzhe & Li, Chunying & Lu, Jian, 2021. "Experimental study on atomization characteristics of high-energy-density fuels using a fuel slinger," Energy, Elsevier, vol. 234(C).
    2. Roman Volkov & Timur Valiullin & Olga Vysokomornaya, 2021. "Spraying of Composite Liquid Fuels Based on Types of Coal Preparation Waste: Current Problems and Achievements: Review," Energies, MDPI, vol. 14(21), pages 1-17, November.
    3. Muteeb Ul Haq & Ali Turab Jafry & Saad Ahmad & Taqi Ahmad Cheema & Munib Qasim Ansari & Naseem Abbas, 2022. "Recent Advances in Fuel Additives and Their Spray Characteristics for Diesel-Based Blends," Energies, MDPI, vol. 15(19), pages 1-30, October.

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