Advanced SearchSearch Tips
Average Droplet Size Distribution of a GDI Spray by Simultaneous Fluorescence/Scattering Image Technique
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Average Droplet Size Distribution of a GDI Spray by Simultaneous Fluorescence/Scattering Image Technique
Gwak, Su-Min; Ryu, Gyeong-Hun; Choe, Dong-Seok; Kim, Deok-Jul;
  PDF(new window)
The objective of this study is to investigate the average droplet size distributions of a GDI spray by simultaneous fluorescence/scattering image technique. GDI engine is recently very popular because of high engine efficiency and low emissions. However, the injectors must have good spray characteristics because the fuel is directly injected into the cylinder. The fuel mixtures used in this study were 2% of fluorobenzene, 9% of DEMA(diethyl-methyl-amine) and 89% of hexane by volume. The system for obtaining 2-D fluorescence/scattering images of fuel spray was constituted of a laser sheet, a doubling prism, optical filters, and an ICCD camera. Using the ratio of the fluorescence to the scattering intensities, SMD distributions were obtained. SMD measured by the technique was compared with that obtained by PDA. It was found that average droplet size was bigger at spray center in the early stage of injection and at the outer periphery of the spray in the late stage of injection.
GDI Engine;Hollow Cone Spray;Exciplex;Swirl Injector;Mie Scattering;SMD;
 Cited by
혼합모델에 의한 GDI 분무예측의 비교,강동완;황순철;김덕줄;

대한기계학회논문집B, 2003. vol.27. 12, pp.1744-1749 crossref(new window)
Yeh, C., Kosaka, H., and Kamimoto, T., 1993, 'Fluorescence/Scattering Image Technique for Particle Sizing in Unsteady Diesel Spray,' JSME Trans. Part B, Vol. 59, No. 568, pp. 308-313

Zelina, J., Rodregue, J. A., and Sankar, S., 1998, 'Fuel Injection Characterization Using Laser Diagnostics at Atmosheric and Elevated Pressures,' AIAA-98-0148

Gal, P. L., Farrugia, N., and Greenhalgh, D. A., 1998, 'Development of Laser Sheet Dropsizing for Spray Characterization,' Optical Methods and Data Processing in Heat and Fluid Flow, pp. 113-120

Eckbreth, A. C., 1996, Laser Diagnostics for Combustion Temperature and Species, 2nd Ed., Gorden and Breach Publishers

Melton, L. A., 1983, 'Spectrally Separated Fluorescence Emissions for Diesel Fuel Droplets and vapor,' Applied Optics, Vol. 22, No. 14, pp. 2224-2226

Melton, L. A., 1993, 'Exciplex-Based Vapor/Liquid Visualization Systems Appropriate for Automotive Gasolines,' Applied Spectroscopy, Vol. 47, No. 6, pp. 782-786 crossref(new window)

Ghanghi, J. B., Felton, P. G., Gajdeczko, B. F., Brocco, F. V., 1994, 'Investigation of the Fuel Distribution in a Two-Stroke Engine with an Air-Assisted Injector,' SAE Paper, No. 940394

Senda, J., Kanda, T., Kobayashi, M., and Fujimoto, H., 1997, 'Quantitative Analysis of Fuel Vapor Concentration in Diesel Spray by Exciplex Fluorescence Method,' SAE Paper, No. 970796

Dong-Seok Choi, Soon-Chul Hwang, Duck-Jool Kim, 2000, 'Development Behavior of Vaporizing Sprays from a High-Pressure Swirl Injector Using Exciplex Fluorescence Method,' KSME International Journal, Vol. 14, No. 10, pp. 1143-1150

Bachalo, W. D., and Houser, M. J., 1984, 'Phase/Doppler Spray Analyzer for Simultaneous Measurements of Drop Size and Velocity Distributions,' Optical Engineering, Vol. 23, No. 5

Felton, P.G., Bracco, F. V., and Bardsley, M. E. A., 1993, 'On the Quantitative Application of Exciplex Fluorescence to Engine Sprays,' SAE Paper, No. 930870

박상언, 김호영, 강보선, 민경덕, 2000, '액적 발생기와 평면 이미지 기법을 이용한 가솔린 분무 입경분포 측정,' 한국액체미립화학회 2000년도 학술강연회논문집, pp. 184-189

T. Igushi, V. G. DcDonell, and G. S. Samuelsen, 1993, 'An Imaging System for Characterization of Liquid Volume Distributions in Sprays,' ILASS-America 93 Conference, pp. 142-146