Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Spray Characteristics of High Pressure Gasoline Swirl Injector with Various Cross-flow Speeds

횡방향 유속 변화에 따른 고압 가솔린 스월 인젝터의 분무특성

  • Choi Jaejoon (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee Youngseok (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Choi Wook (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Bae Choongsik (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
  • 최재준 (한국과학기술원 기계공학과) ;
  • 이용석 (한국과학기술원 기계공학과) ;
  • 최욱 (한국과학기술원 기계공학과) ;
  • 배충식 (한국과학기술원 기계공학과)
  • Published : 2005.01.01
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Abstract

The spray prepared for direct fuel injection into cylinder is of great importance in a DISI(Direct Injection Spark Ignition) engine. The interaction between air flow and fuel spray was investigated in a steady flow system embodied in a wind tunnel to simulate the variety of in-cylinder flow conditions in the DISI engine. The Mie-scattering images presented the macroscopic view of the liquid spray fields interacting with cross-flow Particle sizes of fuel droplets were measured with phase Doppler anemometer(PDA) system. A faster cross-flow field made SMD larger and $D_10$ smaller. The atomization and evaporation processes with a DISI injector were observed and consequently utilized to construct the database on the spray and fuel-air mixing mechanism as a function of the flow characteristics.

Keywords

References

  1. F. Zhao, M. C. Lai and D. L. Harrington, 'Automotive Spark-ignited Direct-injection Gasoline Engines,' Progress in Energy and Combustion Science, pp.437-562, 1999
  2. C. Jang, C. Bae and S. Choi, 'Characterization of Prototype High-Pressure Swirl Injector Nozzles, Part 1: Prototype Development and Initial Characterization of Sprays,' Atomization and Sprays, Vol.10, pp.159-178, 2000
  3. Y. Tanaka, T. Takano, H. Sami, K. Sakai and N. Osumi, 'Analysis on Behaviors of Swirl Nozzle Spray and Slit Nozzle Spray in Relation to DI Gasoline Combustion,' SAE 2003-01-0058, 2003
  4. J. Choi, S. Lee and C. Bae, 'Fuel-Spray Characteristics of High Pressure Gasoline Injection in Flowing Field,' JSME International Journal, B. Vol.43, No.4, 2000
  5. R. L. Liu, W. Q. Liu, L. Q. Wu and C. L. Zhao, 'LDV Measurements of Velocities and Turbulence Intensities in a Production SI Engine Under Motored and Firing Condition,' SAE 1999-01-0955, 1999
  6. E. Karaiskos, C. Arcoumanis and T. Hale, 'Flow and Spray Investigation in Direct Injection Gasoline Engines,' SAE 2002-01-0832, 2002
  7. C. Bae, D. Choi and J. Choi, 'Characterization of Mixture Distribution in a DISI Optical Engine under Late Injection Mode,' 1st International Conference on Optical and Laser Diagnostics, 2002. 12
  8. C. A. Dunbar, A. P. Watkins and J. F.Miller, 'Theoretical Investigation of the Spray from a Pressurized Metered-Dose Inhaler,' Atomization and Sprays, Vol.7, pp.417-436, 1997