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Fuel Concentration Measurements by Laser Rayleigh Scattering  

Kwon, Soon-Tae (Graduate School of Energy & Environment, Seoul National University of Technology)
Lee, Jae-Won (Graduate School of Energy & Environment, Seoul National University of Technology)
Park, Chan-Jun (Department of Mechanical Engineering, Seoul National University of Technology)
Ohm, In-Young (Department of Mechanical Engineering, Seoul National University of Technology)
Publication Information
Journal of Energy Engineering / v.17, no.4, 2008 , pp. 189-197 More about this Journal
Abstract
In this study, a system to measure continuously the fuel concentration in a steady flow rig on the basis of Rayleigh scattering is presented. The system can be employed to measure both the temporal and the spatial distribution. Also, it is possible to calibrate the system for the measurement of accurate absolute concentration. Firstly, the system was tested at a calibration chamber for the determination of scattering cross section from propane, butane, acetylene, Freon-12 and Genetron 143a. After this, the system was adapted to a steady flow rig to measure the temporal and spatial fuel concentration. The rig is composed of cylinder head, intake manifold, injector, and transparent cylinder which can simulate internal combustion engine. To cope with the interference of Mie scattering, which is main obstacle of the measuring concentration with Rayleigh scattering, a hardware filter was installed for reducing the number density of particles. Furthermore a software filter was developed, which is based on the rise time and the time constant of the photomultiplier-amplifier system. In addition, background noisy was reduced by adjusting the optical array and applying the pin hall and beam trap. The results show that LRS can provide useful information about concentration field and the software filter is very effective method to remove Mie interference.
Keywords
LRS(Laser Rayleigh Scattering); Mie scattering; Fuel concentration; Software filter;
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1 F. Q. Zaho and H. Hiroyasu, "The Application of Laser Rayleigh Scattering to Combustion Diagnostics", Prog. Energy Combust. Sci., Vol.19, 1993, pp.447-485.   DOI   ScienceOn
2 K. H. Lee, "Correlation between Mixture Nonuniformity around Spark Plug Gap, Early Flame Development and Cycly-by-Cycle Variation", PhD. thesis, University of Wisconsin-Madison, 1994.
3 C. Arcoumanis, "Velocity and Concentration Fields in Reciprocating Model Engines", PhD. thesis, Imperial College of Science and Technology, 1983.
4 H. G. Green, "Developments in signal analysis for laser Rayleigh scattering", J.Phys.E. : Sci. Instrum. 20, 1987, pp.670-676.   DOI   ScienceOn
5 W. A. de Groot, R. Latham, J. I. Jagoda and W. C. Strahle, "Rayleigh Measurements of Species Concentration in a Complex Turbulent Flow", AIAA Journal, Vol.25, No.8, Nov. 1986, pp.1142-1144.   DOI   ScienceOn
6 M. Carla Escoda and Marshall B. Long, "Rayleigh Scattering Measurements of the Gas Concentration Field in Turbulent Jets", AIAA Journal, Vol.21, No.1, Janu.1983, pp.81-84.   DOI   ScienceOn
7 Y. J. Rho, M. Schlaf, I. Y. Ohm, K. S. Jeong, and I. S. Jeung. "Application of Laser Rayleigh Scattering to Fuel Concentration Measurment:", KSAS.
8 S. Rajan, "Internal Structure of a Turbulent Premixed Flame Using Rayleigh Scattering", Combustion and Flame, 1984, pp.95-107.
9 Y. J. Rho, M. Schlaf, I. Y. Ohm, K. S. Jeong and I. S. Jeung, "Application of Laser Rayleigh Scattering to Fuel Concentration Measurement", 1996 KSAS Autumn Conference, 1996, pp.320-324.
10 G. Gr　nefeld and V. Beushausen, "Planar Air Density Measurements near Model Surfaces by Ultraviolet Rayleigh /Raman Scattering", AIAA Journal, Vol.32, No.7, July 1994, pp.1457-1463.   DOI   ScienceOn
11 B. Shirinzadeh, M. E. Hillard, A. B. Blair and R. J. Exton, "Study of Cluster Formation and its Effect on Rayleigh and Raman Scattering Measurements in a Mach 6 Wind Tunnel", 22nd AIAA Fluid Dynamics, Plasma Dynamics and Lasers Conference, AIAA 91- 1496, Honolulu, Hawaii, July 1991.
12 Y. J. Rho, I. Y. Ohm, K. S. Jeong, and I. S. Jeung, "Fuel Stratification Measurements in a Steady Flow Rig Using Laser Rayleigh Scattering", ASPACC 97, Osaka, Japan, 1997.
13 T. D. Fansler, D. T. French and M. C. Drake, "Fuel Distribution in a Firing Direct-Injection Spark-Ignition Engine Using Laser-Induced Fluorescence Imaging", SAE Paper 950110, 1995.
14 W. M. Pitts and T. Kashiwagi, "The application of laser-induced Rayleigh light scattering to the study of turbulent mixing", J.Fluid Mech., Vol.141, 1984, pp. 391-429.   DOI   ScienceOn
15 S. C. Jhonston , "Precombustion Fuel/Air Distribution in a stratified Charge Engine Using Laser Raman Spectroscopy", SAE Paper 790433, 1979.
16 P. J. Goix, K. R. Leonard, L. Talbot and J. Y. Chen, "Direct measurement of mixture fraction in reacting flow using Rayleigh scattering", Experiments in Fluids, Vol.15, 1993, pp.247-254.
17 C. Arcoumanis, C. S. Bae and Z. Hu, "Flow and Combustion in a Four Valve, Spark-Ignition Optical Engine", SAE Paper 940475, 1994.
18 Y. J. Rho, I. Y. Ohm, K. S. Jeong, and I. S. Jeung, "Laser Rayleigh Scattering Measurements of Fuel Concentration in a Steay Flow Rig". KSAE 96380254, 1996.
19 E. Hecht, Optics, 2nd ed., Addison-Wesley Publishing Co., 1987.
20 F. Q. Zaho, "Laser Rayleigh Scattering Measurement of the Fuel Vapor Concentration in the Combustion Chamber of SI Engine", PhD. thesis, Hiroshima University, 1992.
21 T. Michal Dyer, "Rayleigh Scattering Measurements of Time-Resolved Concentration in a Turbulent Propane Jet", AIAA Journal, Vol.17, No.8, Aug. 1979, pp. 912 -914   DOI   ScienceOn
22 J. Haumann and A. Leipertz, "Flame-temperature measurements using the Rayleigh scattering photon-correlation technique", Optics Letters, Vol.9, No.11, Nov. 1984, pp.487-489.   DOI