한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제13권5호
  • /
  • Pages.64-74
  • /
  • 2005
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  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

PEI용 가솔린 인젝터의 비정상 간헐 분무 특성

Unsteady Intermittent Spray Characteristics of PEI Gasoline Injector

  • 김범준 (전북대학교 기계공학과 대학원) ;
  • 이재호 (전북대학교 기계공학과 대학원) ;
  • 조대진 (전북대학교 기계공학과 대학원) ;
  • 윤석주 (전북대학교 자동차 신기술 연구센터)
  • Kim Beomjun (Graduate of Mechanical Engineering, Chonbuk National University) ;
  • Lee Jaiho (Graduate of Mechanical Engineering, Chonbuk National University) ;
  • Cho Daejin (Graduate of Mechanical Engineering, Chonbuk National University) ;
  • Yoon Suckju (Department of Mechanical Engineering, Automobile Hi-technology Research Center, Chonbuk National University)
  • 발행 : 2005.09.01
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초록

The effect of fuel injection spray on engine performance has been known as one of the major concerns for improving fuel economy and reducing emissions. In general, reducing the spray droplet size could prevent HC emission in gasoline engine. As far as PFI gasoline engine is concerned, the mixture of air and fuel may not be uniform under a certain condition, because breakup and production of spray droplets are made in a short distance between the fuel injector and intake valve. This study, by constituting PFI gasoline spray system, was performed to study the transient spray characteristics and dynamic behavior of droplets from two-holes two-sprays type injector used in DOHC gasoline engine. Mean droplet size and optical concentration in accordance with various conditions were measured by LDPA and CCD camera. Through this study, the variation of drop size and optical concentration could be used for understanding the behavior of unsteady spray was declared and the existing the small droplets between each pulse spray could be estimated caused to the development of wall film was conformed.

키워드

참고문헌

  1. Y. Matsui and Sugihara, 'Sources of Hydrocarbon Emissions from a small Direct Injection Diesel Engine,' JSAE Review, 7, pp.4-11, 1986
  2. M. N. Lisa, M. W. Robert, A. D. Drallmeier, 'Fuel Droplet Entrainment Studies for Minimization of Cold-Start Wall-Wetting,' SAE 950508, 1995
  3. T. Johne and M. Haug, 'Spray Formation Observation and Fuel Film Development Measurements in the Intake of a Spark Ignition Engine,' SAE 950511, 1995
  4. N. Nakamura, K. Nomura and M. Suzuki, 'Key Factors of Fuel Injection System to Draw Out Good Response in 4-Valve Engine,' SAE 870126, 1987
  5. K. Oshiage, Y. Nanyoshi, K. Sawamoto, H. Shigyo, 'New Fuel Injection Method for Better Drive-ability,' SAE 880420, 1988
  6. S. Robert and C. F. Aquime, 'Transient A/F Characteristics for Cold Operation of a 1.6 Liter Engine with Sequential Fuel Injection,' SAE 880691, 1988
  7. P. J. Shayler, R. M. Isaacs and T. H. Ma, 'The Variation of In-Cylinder Mixture Ratios During Engine Cranking at Low Ambient Temperatures,' IMech, Journal of Automobile Engineering, Vol.2, pp.572-578, 1992
  8. A. A. Adamezyk, E. W. Kaiser, and G. A. Lavoic, 'A Combustion Bomb Study of the Hydrocarbon Emissions from Engine Crevice,' Combustion Science and Technology, Vol.33, pp.261-277, 1983 https://doi.org/10.1080/00102208308923680
  9. S. Hwang, Y. Cho, J. Lee, 'A Study on Fuel Transport Characteristics in a Port Fuel Injected SI Engine during Transient Condition,' Transactions of KSAE, Vol.11, No.3, pp.20-27. 2003
  10. K. D. Kihm and J. A. Caton, 'Synchronization of a Laser Diffraction Sizing Technique with Intermittent Spray Systems,' Applied Optics, Vol.31, No.12, pp.1914-1916 https://doi.org/10.1364/AO.31.001914
  11. S. Parrish, 'Spray Characteristics of Compound Silicon Micro Machined Port Fuel Injector Orifices,' M. S. Thesis, Department of Mechanical Engineering, Michigan Technological University, 1993
  12. A. A. Ame and M.-C. Lai, 'Time-resolved Measurements in Transient Port Injector Sprays,' SAE 950509, 1995
  13. S. Parrish and P. V. Farrel, 'Transient Spray Characteristics of a Direct Injection Spark Ignited Fuel Injector,' SAE 970629, 1997
  14. D. Robert, S. Breuer, W. Reekers, R. Kneer, 'Assessment of Pulsed Gasoline Fuel Sprays by Means of Qualitative and Laser-based Diagnostic Methods,' 10th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, 2000
  15. L. E. Markle, D. L. S. Hung, W. A. Humphrey, D. M. Chmiel, C. A. Ospina and F. E. Brado, 'A Novel Transient Frop Sizing Technique for Investigating the Role of Injector Spray in Fuel Mixture Preparation,' SAE 2004-01-1349, 2004