Abstract
A comparatively inexpensive instrument has been developed for the measurement of local concentrations of gaseous fuel and evaluated in terms of its application to the flow in the cylinders of internal-combustion engines. It is based on the absorption of infrared light by hydrocarbons with computer tomography to provide spatially local information. This paper describes the instrument and its application to the flow in simple arrangements intended to represent the cylinders of an internal-combustion engine. The optical system comprised a helium-neon laser, a lead-selenium sensor, a chopper, an amplifier and a microcomputer. It can readily be modified to improve spatial resolution by monitoring the temporal fluctuations in the intensity of the laser beam, the error from which was reduced to less than 0.8% in the present experiment. A translation and rotation scanning method formed the basis for tomography and the spatial distribution of gaseous fuel was reconstructed by convolution. The instrument was applied to a simulation of the flow in a lean-burn gasoline engine with a cylinder made of quartz glass. The methane fuel was injected at the intake valve or 100 mm upstream of the valve to simulate evaporated fuel with steady airflow, and the port geometry provided swirl corresponding to ratios of 1.3 and 2.9. The cylindrical cylinder implied that the fibre location was adjusted to detect the laser light absorption at known positions along the light path. Distributions of the concentration of methane are presented by infrared light passing through hydrocarbons and computer tomography to provide spatially local information.
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References
Arcoumanis C, et al. (1987), SAE Paper, No. 840376.
Bardsley MEA, Felton PG, Bracco FV (1988) 2-D Visualization of Liquid and Vapor Fuel in an I.C. Engine, SAE Paper, no. 880521, pp. 1–11.
Budinger TF, Gullberg GT (1974), IEEE Trans. Nucl. Sci., vol.NS-21, p. 2.
Cuzzillo BC, Metcalf JT, Daily JW (1982) Laser Absorption Measurement of Hydrocarbons in a Spark Ignition Square Piston I.C. Engine, Wss/CI Paper, no. 82–59, pp. 1–17.
Ebrahimi I, et al. (1976), Proceedings of International Symposium on Combustion, p.1711.
Gordon R, Herman GT (1974) Three dimensional reconstruction from projection: A review of algorithms, Int. Rev. Cytol., vol. 38, pp. 111–151.
Gordon R, et al. (1970) Algebraic reconstruction technique (ART) for three dimensional electron microscopy and X-ray photograph, Jour. Theor. Biol., vol. 29, pp. 471–481.
Herzberg G (1971) The Spectra and Structures of Simple Free Radicals: An Introduction to Molecular Spectroscopy, Cornell University Press, New York.
Ito Y, Kitaura M, Fujimoto H (1987) Gaseous Fuel Concentration in Pre-chamber of Diesel Engine (in Japanese), Proc. of JSAE Conf., no. 872, pp. 637–642.
Kamura H, Takada K (1998) Development of in-cylinder gasoline direct injection engine, JSAE Review, vol. 19, no. 2, pp. 175–180.
Kawazoe H, Ohsawa K, Kataoka M (1991) LDA Measurement of Gasoline Droplet Velocities and Sizes at Intake-Valve Annular Passage in Steady Flow State. In: Adrian RJ et al. (eds) Applications of Laser Anemometry to Fluid Mechanics. Springer-Verlag, Berlin, pp. 248–267.
Kay DB et al. (1974), Jour. Nucl. Med., vol. 15, p. 981.
Maeda M, Sanai N, Kobashi K, Hishida K (1989) Measurement of Spray Mist Flow by a Compact Fiber LDV and Doppler-Shift Detector with a Fast DSP. In: Adrian RJ et al. (eds) Applications of Laser Anemometry to Fluid Mechanics. Springer-Verlag, Berlin, pp. 224–239.
Melton LA, Verdieck JF (1985) Vapor/Liquid Visualization for Fuel Sprays, Combustion Science and Technology, vol. 42, p. 217.
Nagaoka M, Kawazoe H, Nomura N (1994) Modeling Fuel Spray Impingement on a Hot Wall for Gasoline Engines, SAE Paper, no. 940525, pp. 1–19.
Nakayama M, Araki T (1988) A Study of Visualization of Diesel Spray by Means of Computed Tomography (in Japanese), Trans. JSME, B, vol. 54, no. 501, pp. 1193–1188.
Posylkin M, Taylor AMKP, Whitelaw JH (1994) Manifold Injection and The Origin of Droplets at The Exit of An Inlet Valve, Proc. 7th Int. Symp Appl. Laser Tech. To Fluid Mech., vol.2, pp.33.3.1–33. 3. 8.
Radon J (1917) Uber die Bestimmug von Funktionen durch Ihre Integralwerte Laengs Geweisser Mannigfaltigkeiten, Berichte Saechsishe Acad. Wissenschaft. Math. Phys., Klass 69, pp. 262–271.
Rothe EW, Gu Y, Chryssostomou A, Andresen P, Bormann F (1998) Effect of laser intensity and of lower-state rotational energy transfer upon temperature measurements made with laser-induced predissociative fluorescence, Applied Physics B: Lasers and Optics, vol. 66, no. 2, pp. 251–258.
Shepp LA, Logan BF (1974) The Fourier reconstruction of a head section, IEEE Trans. Nucl. Sci., vol.NS-21, pp. 21–43.
Shimizu R, Matsumoto S, Furuno S, Murayama M, Kojima S (1992) Measurement of Air-Fuel Mixture Distribution in a Gasoline Engine Using LIEF Technique, SAE Paper, no. 922356, pp. 1–7.
Shore PR, deVries RS (1992) On-Line Hydrocarbon Speciation Using FTIR and CI-MS, SAE Trans., no. 922246, pp. 33–49.
Tsuboi T, Inomata K, Tsunoda Y, Isobe A, Nagaya K (1985) Light Absorption by Hydrocarbon Molecules at 3.392 micro-meter of He-Ne Laser, Japanese Journal of Applied Physics, vol. 24, no. 1, pp. 8–13.
Wakai K, Shimizu S, Kondo M (1990) Measurement of Two-Dimensional Temperature and Density Distributions by a 2-Band-Absorption CT (in Japanese), Trans. JSME, B, vol. 56, no. 532, pp. 346–351.
Wigley G, G.K. Hargrave GK, Heath J (1999) High power, high resolution LDAPDA system applied to gasoline direct injection sprays, Particle and Particle Systems Characterization, vol. 16, no. 1, pp. 11–19.
Winklhofer E, Fraidl GK, Plimon A (1992) Monitoring of gasoline fuel distribution in a research engine, Proc Instn Mech Engrs, 206, pp. 107–115.
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Kawazoe, H., Whitelaw, J.H. (2002). Computer tomography of infra-red absorption and its application to internal-combustion engines. In: Laser Techniques for Fluid Mechanics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-08263-8_28
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DOI: https://doi.org/10.1007/978-3-662-08263-8_28
Publisher Name: Springer, Berlin, Heidelberg
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