융복합기술연구소 논문집 (Journal of Institute of Convergence Technology)

한국교통대학교 융복합기술연구소 (Institute of Convergence Technology)
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쉴리렌 가시화 기법을 이용한 E85 연료의 액상 및 기상 분무 비교

Comparison of Liquid- and Vapor-Phase Spray Characteristics of E85 Fuel using Schlieren Visualization Technique

  • 박수한 (전남대학교 기계공학부) ;
  • 상몽소 (전남대학교 대학원 기계공학과)
  • Park, Suhan (School of Mechanical Engineering, Chonnam National University) ;
  • Chang, Mengzhao (Department of Mechanical Engineering, Graduate School of Chonnam National University)
  • 투고 : 2018.06.26
  • 심사 : 2018.10.29
  • 발행 : 2018.11.30
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초록

The purpose of this study is to investigate the liquid- and vapor-phase spray characteristics, such as spray tip penetration and spray angle using gasoline direct injection (GDI) injector with multi-hole. The vapor-phase spray was captured by the Schlieren visualization system, which consists of high-speed camera, LED lamp, concave mirrors, and knife-edge. The liquid-phase spray was visualized by Mie-scattering techniques. Both spray images of vapor- and liquid-phase were visualized under 373 K of ambient temperature, 1 bar of ambient pressure, and 100/200 bar of injection pressure. The energizing duration was fixed at 1.5 ms. From the analysis of experimental results, it revealed that the increased injection pressure induced an early vaporization due to the improvement of droplet atomization. The spray tip penetration and spray angle in vapor-phase were higher than those in liquid-phase. The difference in the spray tip penetration between vapor- and liquid-spray gradually increased with the time elapsed after the injection. Even with the spray angle characteristics, it was found that the difference between the spray angle of liquid and vapor spray gradually grew after they entered steady-state conditions.

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참고문헌

  1. J. Lee and Y. Lee, "The Combustion and Emission Characteristics with Increased Fuel Injection Pressure in a Gasoline Direct Injection Engine", Journal of ILASS-Korea, Vol. 22(1), pp.1-7, 2017. https://doi.org/10.15435/JILASSKR.2017.22.1.1
  2. H. J. Kim, J. H. Kim, G. W. Kang, S. M. Kim and J. S. Kim, "Investigation on the Exhaust Emission Characteristics of GDI Vehicles According to Various Mileage", Journal of ILASS-Korea, Vol. 22(1), pp.8-12, 2017. https://doi.org/10.15435/JILASSKR.2017.22.1.8
  3. K. E. Lee, N. Y. Kim, Y. J. Cho, D. R. Lee and S. Park, "Modeling Dynamic Behavior and Injection Characteristics of a GDI Injector", Journal of ILASS-Korea, Vol. 22(4), pp.210-217, 2017. https://doi.org/10.15435/JILASSKR.2017.22.4.210
  4. A. A. Reddy and J. M. Mallikarjuna, "Parametric Study on a Gasoline Direct Injection Engine - A CFD Analysis", SAE paper 2017-26-0039, 2017.
  5. Y. Huang, S. Huang, R. Huang and G. Hong, "Spray and Evaporation Characteristics of Ethanol and Gasoline Direct Injection in Non-Evaporating, Transition and Flash-Boiling Conditions", Energy Conversion and Management, Vol. 108, pp.68-77, 2016. https://doi.org/10.1016/j.enconman.2015.10.081
  6. G. Y. Park, S. H. Kang, I. G. Kim, C. S. Lim, J. M. Kim, Y. S. Cho and S. W. Lee, "An Experimental Study on the Spray and Lean Combustion Characteristics of Bioethanol- Gasoline Blended Fuel of GDI", Journal of ILASS-Korea, Vol. 19(3), pp.115-122, 2014. https://doi.org/10.15435/JILASSKR.2014.19.3.115
  7. J. Park and S. Park, "Study on Macroscopic Spray and Spray Pattern Characteristics of Gasoline Direct Injection Injector for the Variation of Injection Pressure", Journal of ILASS-Korea, Vol.23(1), pp.22-29, 2018. https://doi.org/10.15435/JILASSKR.2018.23.1.22