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Experimental Investigation on Wall Film Distribution of Dimethyl Ether/Diesel Blended Fuels Formed during Spray Wall Impingement

Author

Listed:
  • Hanzhengnan Yu

    (State Key Laboratory of Engines, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin 300072, China)

  • Xingyu Liang

    (State Key Laboratory of Engines, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin 300072, China)

  • Gequn Shu

    (State Key Laboratory of Engines, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin 300072, China)

  • Xu Wang

    (School of Aerospace Mechanical and Manufacturing Engineering, The Royal Melbourne Institute of Technology University, 124 La Trobe Street, Melbourne, VIC 3000, Australia)

  • Yuesen Wang

    (State Key Laboratory of Engines, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin 300072, China)

  • Hongsheng Zhang

    (State Key Laboratory of Engines, Tianjin University, No. 92 Weijin Road, Nankai District, Tianjin 300072, China)

Abstract

Dimethyl ether (DME)/diesel blended fuels are used to improve the emissions caused by spray wall impingement during the early injection period. However, experimental results have showed that the spray wall impingement still cannot be avoided due to the engine structure and low density of the in-cylinder charge at the early injection timing. Furthermore, the wall film formed in the spray wall impingement process directly affects fuel/air mixture formation, combustion, exhaust emissions and oil quality subsequently. In this paper, the wall film distribution of DME/diesel blended fuels formed during the spray wall impingement process has been experimentally investigated. The variations of wall film distribution, wall film area and average thickness with different injection pressures, impingement distances, impingement angles and blending ratios have been discussed under both dry wall and wet wall conditions. Results showed that the wall film distribution styles were mainly determined by the spray impingement momentum. The variation of the wall film area and average thickness were affected by three factors including the impingement momentum, wall film mass and fuel properties. Correlation analysis was introduced in order to evaluate the effect of each impact factor on the variation of wall film area and average thickness.

Suggested Citation

  • Hanzhengnan Yu & Xingyu Liang & Gequn Shu & Xu Wang & Yuesen Wang & Hongsheng Zhang, 2016. "Experimental Investigation on Wall Film Distribution of Dimethyl Ether/Diesel Blended Fuels Formed during Spray Wall Impingement," Energies, MDPI, vol. 9(11), pages 1-17, November.
    • Handle: RePEc:gam:jeners:v:9:y:2016:i:11:p:949-:d:83007
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    References listed on IDEAS

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    Cited by:

    1. Xingyu Liang & Hongsheng Zhang & Gequn Shu & Yuesen Wang & Xiuxiu Sun & Hanzhengnan Yu & Ming Ge, 2018. "Experimental Investigation on Effect of Wall Roughness and Lubricant Film on the Adhered Fuel Film of N-Butanol-Diesel Blends after Spray Impingement," Energies, MDPI, vol. 11(6), pages 1-14, June.
    2. Seemoon Yang & Changhee Lee, 2018. "Experimental Research on the Injection Rate of DME and Diesel Fuel in Common Rail Injection System by Using Bosch and Zeuch Methods," Energies, MDPI, vol. 11(2), pages 1-11, January.
    3. Evangelos G. Giakoumis, 2017. "Diesel and Spark Ignition Engines Emissions and After-Treatment Control: Research and Advancements," Energies, MDPI, vol. 10(11), pages 1-4, November.
    4. Song, Jingeun & Lee, Ziyoung & Song, Jaecheon & Park, Sungwook, 2018. "Effects of injection strategy and coolant temperature on hydrocarbon and particulate emissions from a gasoline direct injection engine with high pressure injection up to 50 MPa," Energy, Elsevier, vol. 164(C), pages 512-522.

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