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Quantitative Measurement of Liquid and Vapor Phase Concentration Distributions in a D.I. Gasoline Spray by the Laser Absorption Scattering (LAS) Technique
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 06, 2002 by SAE International in United States
Annotation ability available
To get quantitative measurements of liquid and vapor phase concentration distributions in a gasoline spray, a laser-based absorption and scattering (LAS) technique was developed. The LAS technique adopts ultraviolet and visible lasers as light sources and a test fuel, which absorbs the ultraviolet light but does not absorb the visible light, instead of gasoline. The LAS principle is based on the incident light extinction in the ultraviolet band due to both vapor absorption and droplets scattering, whereas in the visible band, the incident light extinction is due only to the droplet scattering. The absorption spectra and molar absorption coefficients of the candidate test fuels including p-xylene, benzene and toluene, all of which have physical properties similar to gasoline, were investigated, and p-xylene was finally selected as a test fuel. Measurement accuracy of the LAS technique was discussed. Finally, experiments were conducted on a spray injected into a constant volume vessel by a swirl injector for a direct injection (DI) gasoline engine. The concentration distributions of both liquid and vapor phases in the spray were quantitatively clarified and their variations with time was elucidated. The effects of ambient temperature on the concentration distribution were also investigated.
CitationYamakawa, M., Takaki, D., Li, T., Zhang, Y. et al., "Quantitative Measurement of Liquid and Vapor Phase Concentration Distributions in a D.I. Gasoline Spray by the Laser Absorption Scattering (LAS) Technique," SAE Technical Paper 2002-01-1644, 2002, https://doi.org/10.4271/2002-01-1644.
- Harada, J., Tomita, T., Mizuno, H., Mashiki, Z. and Ito, Y.: Development of Direct Injection Gasoline Engine. SAE Technical Paper No. 970540, 1997.
- Iwamoto, Y., Noma, K., Nakayama, T., Yamauchi, T., Ando, H.: Development of Gasoline Direct Injection Engine. SAE Technical Paper No. 970451, 1997
- Zhao, F., Lai, M.-C., and Harrington, D.L., Automotive Spark-Ignited Direct-Injection Gasoline Engines, Progress in Energy and Combustion Science (JPECS), Vol. 25, No. 5, pp. 437-562, 1999.
- Ortmann, R., Arndt, S., Raimann, J., Grzeszik, R. and Wurfel, G: Methods and Analysis of Fuel Injection, Mixture Preparation and Charge Stratification in Different Direct Injected SI Engines, SAE Technical Paper No. 2001-01-0970, 2001.
- Zhao, F., Taketomi, M., Nishida, K., Hiroyasu, H.: Quantitative Imaging of the Fuel Concentration in a SI Engine with Laser Rayleigh Scattering. SAE Technical Paper No.932641, 1993.
- Rabenstein, F., Egermann, J., and Leipertz, A: Quantitative Analysis of Vapor Phase Structures in Transient Liquid Fuel Sprays. The 4th International Symposium COMODIA 98, 1998
- Suzuki, M., Nishida, K., and Hiroyasu, H.: Simultaneously Concentration Measurement of Vapor and Liquid in an Evaporating Diesel Spray, SAE Technical Paper, No.930863, 1993
- Zhang, Y., Yoshizaki, T. and Nishida, K.: Imaging of Droplets and Vapor Distributions in a Absorbance-Scattering Technique, Applied Optics, Vol.39, No.33, pp.6221-6229, 2000.
- Zhang, Y., Nishida, K., Yoshizaki, T.: Quantitative Measurement of Droplets and Vapor Concentration Distributions in Diesel Sprays by Processing UV and Visible Images, SAE Technical Paper, No.2001-01-1294, 2001.
- Zhang, Y., Nishida, K., Yoshizaki, T.: Characterization of Droplets and Vapor Concentration Distributions in Split-injection Diesel Sprays by Processing UV and Visible Images, The 5th International Symposium COMODIA 2001, pp. 518-525, 2001.
- Bohren, C.F. and Huffman D. R.: Absorption and Scattering of Light by Small Particles, A Wiley Inter-science Publication, New York, 1988
- Kamimoto, T., Yokota, H. and Kobayashi, H.: A New Technique for the Measurement of Sauter Mean Diameter of Droplets in Unsteady Dense Sprays, SAE Technical Paper, No. 890316, 1989.
- Twomey, S., Howell, H.B.: The Relative Merit of White and Monochromatic Light for the Determination of Visibility by Backscattering Measurements, Applied Optics, Vol.4, No.4, pp.501, 1965.
- Van de Hust, H.C.: Light Scattering by Small Particles, A Jone Wiley&Sons, Inc. Publication, 1957.
- Hammond, D.C., Jr.: Deconvolution Technique for Line-of-Sight Optical Scattering Measurements in Axisymmetric Sprays, Applied Optics, Vol.20, No.3, pp. 493-498, 1981.
- VanDerWege, B.A. and Hochgred, S.: Effects of Fuel Volatility and Operating Conditions on Fuel Sprays in DISI Engines: (1) Imaging Investigation, SAE Technical Paper, No. 2000-01-0535, 2000.
- Yamakawa, M., Isshiki, T., Yoshizaki, T. and Nishida, K.: Measurement of Ambient Air Motion of D.I. Gasoline Spray by LIF-PIV, The 5th International Symposium COMMODIA 2001, pp.499-504, 2001.