LIEF법을 이용한 증발 디젤 분무의 특성에 관한 연구

A Study on the Characteristics of an Evaporating Diesel Spary Using LIEF Technique

  • 김용래 (서울대학교 기계항공공학부 대학원) ;
  • 김만식 (서울대학교 기계항공공학부 대학원) ;
  • 조훈 (서울대학교 기계항공공학부 대학원) ;
  • 민경덕 (서울대학교 기계항공공학부)
  • 발행 : 2002.09.30

초록

An evaporating diesel spray of a common rail lnjector was visualized by LIEF technique. This technique makes it possible to separate the vapor and liquid phase images. The experiment was conducted in a constant volume vessel to make a high temperature and high pressure condition. Three images(vapor and liquid phase images from LIEF and a liquid phase image from Mie scattering) were taken simultaneously in one spray event. The major experimental parameters are the injection pressure and the ambient gas pressure. Also, a relative SMD distribution in a liquid phase was obtained by the ratio of the intensities of the fluorescence and the Mie scattering. The results show that the injection pressure and the ambient gas pressure have a close relation with the spray development and air-fuel muting process.

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