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Cycle-Resolved Measurements of Flame Kernel Growth and Motion Correlated with Combustion Duration
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1990 by SAE International in United States
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A recently developed spark plug equipped with fiber-optic flame-arrival detectors has been used to measure the motion and rate of growth of the early flame kernel. The cylinder pressure and gas velocity in the spark gap were measured simultaneously with the flame kernel measurements, permitting the data to be analyzed on a cycle-by-cycle basis to identify cause-and-effect correlations between the measured parameters.
The data were obtained in a homogeneous-charge research engine that could be modified to produce three very different flow fields: (1) high swirl with high turbulence intensity, (2) tumble vortex with moderate turbulence intensity, and (3) negligible bulk motion with low turbulence intensity. The results presented show a moderate correlation between the combustion duration and the rate of growth of the flame kernel, but virtually no correlation with either the magnitude or direction of movement of the flame kernel away from the spark gap.
CitationWitze, P., Hall, M., and Bennett, M., "Cycle-Resolved Measurements of Flame Kernel Growth and Motion Correlated with Combustion Duration," SAE Technical Paper 900023, 1990, https://doi.org/10.4271/900023.
- Young, M. B., “Cyclic Dispersion in the Homogeneous-Charge Spark-Ignition Engine - A Literature Survey,” SAE Paper 810020, 1981.
- Keck, J. C, Heywood, J. B. and Noske, G., “Early Flame Development and Burning Rates in Spark Ignition Engines and Their Cyclic Variability,” Trans. SAE, Reciprocating Engines - Spark Ignition and Diesel, Vol. 96, p. 162, 1987.
- Witze, P.O., Hall, M. J. and Wallace, J. S., “Fiber-Optic Instrumented Spark Plug for Measuring Early Flame Development in Spark Ignition Engines,” SAE Paper 881638, 1988.
- Hall, M. J., “The Influence of Fluid Motion on Flame Kernel Devolopment and Cyclic Variation in a Spark Ignition Engine,” SAE Paper 890991, 1989.
- Kerstein, A. R. and Witze, P.0., “Flame-Kernel Model for Analysis of Fiber-Optic Instrumented Spark Plug Data,” accepted for presentation at the 1990 SAE International Congress and Exposition, Detroit, February, 1990.
- Witze, P. O., Martin, J. K. and Borgnakke, C., “Measurements and Predictions of the Precombustion Fluid Motion and Combustion Rates in a Spark Ignition Engine,” Trans. SAE, Vol. 92, p. 786, 1983.
- Witze, P. O., “The Effect of Spark Location on Combustion in a Variable-Swirl Engine,” Trans. SAE, Vol. 91, p. 165, 1982.
- Martin, J. K., Witze, P. O. and Borgnakke, C., “Combustion Effects on the Preflame Flow Field in a Research Engine,” Trans. SAE, Vol. 94, p. 1722, 1985.
- Witze, P.0., “An Engine Simulator for Laser Diagnostic Studies of One-Dimensional Turbulent Flame Propagation,” Proceedings of the International Symposium on Diagnostics and Modeling of Combustion in Reciprocating Engines, JSME, Tokyo, p. 305, 1985.
- Semenov, E. S., “Studies of Turbulent Gas Flow in Piston Engines,” Tech. Transi. F-97, NASA, 1963.
- Lancaster, D. R., “Effects of Engine Variables on Turbulence in a Spark-Ignition Engine,” Trans. SAE, Vol. 85, p. 671, 1976.
- Nolan, J. P., Barrack Laboratories, Marlborough, MA, private communication, 1989.
- Spicher, U., Schmitz, G. and Kollmeier, H-P., “Application of a New Optical Fiber Technique for Flame Propagation Diagnostics in IC Engines,” SAE Paper 881637, 1988.
- Jefferson, T. H., “TJMAR1-A Fortran Subroutine for Nonlinear Least Squares Parameter Estimation,” Sandia National Laboratories Report SLL-73-0305, 1974.
- Cole, J. B. and Swords, M. D., “An Investigation of the Ignition Process in a Lean-Burning Engine Using Conditionally Sampled Laser-Doppler Anemometry,” Trans. SAE, Vol. 89, p. 260, 1980.
- Hamamoto, Y., Wakisaka, T. and Ohnishi, M., “Cycle-to-Cycle Fluctuation of Lean Mixture Combustion in Spark-Ignition Engines,” Bull. JSME, Vol. 25, No. 199, p. 61, 1982.
- Herweg, R., Begleris, Ph., Zettlitz, A. and Ziegler, G. F. W., “Flow Field Effects on Flame Kernel Formation in a Spark-Ignition Engine,” SAE Paper 881639, 1988.
- Witze, P.0., Martin, J. K. and Borgnakke, C., “Conditionally - Sampled Velocity and Turbulence Measurements in a Spark Ignition Engine,” Comb. Sci. Tech., Vol. 36, p. 301, 1984.
- Asmus, T. W., Chrysler Corporation, Detroit, MI, private communication, 1989.