Abstract
Laser-induced fluorescence is used to quantify the thickness of liquid films. An optimisation of the fluorescent tracer to make it evaporate at the same ratios as gasoline is performed since the final application is the study of evaporating films, as those found in intake pipes of port-injected spark-ignited engines. The liquid studied is iso-octane and the tracer is a ketone. Because of distillation, the tracer concentration in the liquid film may not remain constant. The most suitable tracers are C6 ketones.
The optical set-up uses a single optical fibre for both laser excitation and fluorescence collection. It is designed for local measurements through transparent walls. A precise liquid wedge is used for calibration. An application is shown on a transparent pipe, with stationary air flow and pulsed low-pressure injection. The technique has proven to be able to show the unstationary phenomena. The impact of the spray, the deposition of a large quantity of fuel and the displacement of liquid waves are quantified and followed with time.
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References
H.P. Lenz, Mixture Formation in Spark-Ignition Engines SAE Publications
F. Vannobel, J.B. Dementhon, D. Robant, “Phase-Doppler Anemometry Measurements on a Gasoline Spray inside the Inlet Port and downstream of the Induction Valve; Steady and Unsteady Conditions”, 6th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon 1992, also Applications of Laser Techniques to Fluid Mechanics edited by R.J. Adrian, D.F.G. Durao, F. Durst, M. Maeda and J.H. Whitelaw, 6, 507, Springer-Verlag
M.J. Miller, C.J.E. Nightingale, P.A. Williams, “Measurement of Spark-ignition Engine Mixture Preparation and Assessment of its Effects on Engine Performance”, IMechE 1991, C433/022
I. Sherrington, E.H. Smith, “Experimental Methods for Measuring the Oil-film Thickness between the Piston-rings and Cylinder-wall of Internal Combustion Engines”, Tribology International, Vol. 18, No. 6, Dec. 1985
R.K. Sun, W.F. Kolbe, B. Leskovar and B. Turko, “Measurement of Thickness of Thin Water Film in Two-phase Flow by Capacitance Method”, IEEE Transactions on Nuclear Science, Vol. NS-29, No. 1, Feb. 1982
V. H. Muller, H. Bellmann, J Himmelsbach, A. Elsasser, W. Samenfink, and M. Hallmann, “Gemischaufbereitung und Wandfilmverhalten in Saugrohren von Ottomotoren”, MTZ No. 3 and No. 4, March and April 1994 (in German)
A.E. Smart, R.A.J. Ford, “Measurement of Thin Liquid Films by a Fluorescence Technique”, Wear No. 29, pp 41–47, 1974
R.A.J. Ford, C.A. Foord, “Laser-based Fluorescence Technique for Measuring Thin Liquid Films”, Wear No. 51n pp 289–297, 1978
L.L. Ting, “Development of a Laser Fluorescence Technique for Measuring Piston Ring Oil Film Thickness”, Journal of Lubrication Technology, Vol. 102, pp 165–171, Apr. 1980
D.P. Hoult,J.P. Lux, V.W. Wong, S.A. Billion, “Calibration of Laser Fluorescence Measurements of Lubricant Film Thickness in Engines”, SAE 881587
B.T. Shaw II, D.P. Hoult, V.W. Wong, “Development of Engine Lubricant Film Thickness Diagnostics Using Fiber Optics and Laser Fluorescence”, SAE 920651
D.E. Richardson, G.L. Borman, “Using Fiber Optics and Laser Fluorescence for Measuring Thin Oil Films with Application to Engines”, SAE 912388
D.A. Walker, “A Fluorescence Technique for Measurement of Concentration in Mixing Liquids”, J. Phys. E: Sci. Instrum. 20 (1987) pp 217–224
J. Trapy, “Mesure des épaisseurs de films liquides au moyen de la fluorescence induite par laser”, I.F.P. report 38687, 1991 (in French) [15] E. Robert, personal communication, Institut Français du Pétrole
J. Trapy, “Mesure des épaisseurs de films liquides au moyen de la fluorescence induite par laser”, I.F.P. report 38687, 1991 (in French) [15] E. Robert, personal communication, Institut Français du Pétrole
A. Lozano, B. Yip, R.K. Hanson, “Acetone: a Tracer for Concentration Measurements in Gaseous Flows by Planar Laser-induced Fluorescence”, Exp.in Fluids Vol. 13, pp 369–376, 1992
T.A. Baritaud, T.A. Heinze, “Gasoline Distribution Measurements with PLIF in a S.I. Engine”, SAE 922355, 1992
T.A. Heinze, T.A. Baritaud, “Development of Laser Induced Fluorescence Method to Visualise Gas Distribution in a S.I. Engine”, 6th International Symposium on Applications of Laser Technology to Fluid Mechanics, Lisbon, July 20–23 1992
W. Lawrenz, J. Kohler, F. Meier, W. Stolz, R. Wirth, W.H. Bloss, R.R. Maly, E. Wagner, M Zahn, “Quantitative 2D LIF Measurements of Air/fuel Ratios During the Intake Stroke in a Transparent SI Engine”, SAE 922320
on Combustion, Irvine, July 31st-August 5th 1994
C.N.R. Rao, Ultra-Violet and Visible Spectroscopy Butterworths, London 1967
J. Vidal, personal communication, Institut Français du Pétrole
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© 1996 Springer-Verlag Berlin Heidelberg
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Le Coz, JF., Baritaud, T. (1996). Application of Laser Induced Fluorescence for Measuring the Thickness of Evaporating Gasoline Liquid Films. In: Adrian, R.J., Durão, D.F.G., Durst, F., Heitor, M.V., Maeda, M., Whitelaw, J.H. (eds) Developments in Laser Techniques and Applications to Fluid Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-79965-5_8
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DOI: https://doi.org/10.1007/978-3-642-79965-5_8
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