한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)
- 제9권2호
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- Pages.50-58
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- 2001
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- 1225-6382(pISSN)
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- 2234-0149(eISSN)
GDI 분무의 기.액상 분포를 통한 분무의 성장 특성
Characteristics of Spray Development from Vapor/Liquid Phase Distribution for GDI Spray
초록
The purpose of this research is to obtain the information of the development process of a vaporizing GDI spray using exciplex fluorecence method. Fluorobenzene/DEMA system was used as the exciplex-forming dopants. The 2-D spray images of liquid and vapor phases were acquired, and the behavior of both phases was analyzed by the image processing. The experiment was performed at the three different ambient perssures and the ambient temperature of 273K and 473K. As the result of this work, it was found that the development characteristics of GDI spray have stronger effect on the ambient pressure than on the ambient temperature. With an increase of ambient pressure, the distribution of vapor phase was decreased and the concentration of that was denser. Two regions, namely cone and mixing regions could be identified from those resulrs.
키워드