This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Coupled Experimental-Theoretical Model of Flame Kernel Development in a Spark Ignition Engine
Annotation ability available
Sector:
Language:
English
Abstract
A physical model for flame kernel development in spark ignition engines has been developed. It is based on a coupled experimental and theoretical analysis of early stages of the flame kernel development. The experimental work involves high-speed imaging of chemi-luminescent combustion light during the very early stages of combustion just after ignition. The resulting sequences of flame kernel images were analyzed to yield the time dependencies of quantities such as: the total kernel growth, the thermal expansion part of growth, the local translational velocity of the centroid, the stretching of the flame kernel surface and its roughness. The theoretical part of the model is one-dimensional and derived from the conservation equations and well-known thermodynamic relations. It considers input of electrical energy, combustion energy release, heat transfer to the spark plug and to the unburned mixture. The model also takes into account the shear forces and the kinetic energy evolved by the flame kernel movement as well as the flame stretching effect. The governing equations.of the model have been solved numerically in conjunction with an advanced chemical kinetics package, CHEMKIN, which is designed to facilitate the simulation of the detailed chemical reactions and the evaluation of the coefficients of the transport properties. The concentration of each of the species participating in the combustion process, their chemical heat release, their temperature history and transport properties have all been evaluated.
Authors
Citation
Yossefi, D., Belmont, M., Thurley, R., Thomas, J. et al., "A Coupled Experimental-Theoretical Model of Flame Kernel Development in a Spark Ignition Engine," SAE Technical Paper 932716, 1993, https://doi.org/10.4271/932716.Also In
References
- Belmont M.R. Hancock M.S. Buckingham D.J. “Statistical aspects of cyclic variability” SAE paper No. 860324 1986
- Belmont M.R. “Dilation Correlation Functions and their applications” I.E.E. Proc. 137 5 1990
- Belmont M.R. Thurley R. Thomas J. Haviland J.S. Morris E.L. Pourzanjani M.A. “Two Dimensional Dilation Correlation Functions” Proc. Sixth Int I.E.E. Conf. on Processing of Signals Loughborough Sept. 1991
- Cant R.S. Bray, K.N.C. “A Theoretical Model of Premixed Turbulent Combustion in Closed Vessels” Journal of Combustion and Flame 76 1989
- Hancock M. S. Belmont M.R. Buckingham, D.J. “Development of an Image Capture Technique” Proc. I.Mech.E. 204 125 132 1990
- Herweg R. Maly R.R. “A Functional Model for Flame Kernel Formation in S.I. Engines” SAE paper No. 922243 1992
- Kee, R.J. Rupley F.M. Miller J.A. “Chemkin2: A Fortran Chemical Kinetics Package for the Analysis of Gas-Phase Chemical Kinetics” Sandia National Laboratories Report 1989
- Ko Y. Anderson R.W. “Electrode Heat Transfer During Spark Ignition” SAE International Conference Detroit February 1990
- Lavoie, A.G. “Correlation of Combustion Data for S.I. Engine Calculations - Laminar Flame Speed, Quench Distance and Global Reactor Rates” SAE paper No. 780229 1978
- Mantel T. “Three Dimensional Study o f Flame Kernel Formation Around a Spark Plug” SAE International Conference Detroit February 1992
- Metgbalchi M. Keck J.C. “Burning Velocities of Mixtures of Air with Methanol, Isooctane and Indolene” Journal of Combustion and Flame 48 191 210 1982
- Pischinger S. Heywood J.B. “How Heat Losses to the Spark Plug Electrodes Affect Flame Kernel Development in an IS-Engine” SAE paper No. 900021 1990
- Pischinger S. Heywood J.B. “A model for Flame Kernel Development in a Spark Ignition Engine” Twenty-Third International Symposium on Combustion France July 1990
- Tagalian J. Heywood J.B. “Flame Initiation in a Spark Ignition Engine” Journal of Combustion and Flame 64 243 246 1986
- Thomas J. Thurley R. Belmont M.R. Morris E.L. Hacohen J. Buckingham D.J. Haviland J.S. “A Multi Processor system for Data Acquisition and Control of an Engine Test Bed” Proc. I.Mech.E. Experimental methods in engine research and development 91 London December 1991 83 86
- Thomas, R. Thurley, R.T. Hacohen, J. Morris, E.L. Belmont, M.R. The Multi-Variate Classification approach applied to Lean Burn Combustion Analysis and Development in a Spark Ignition Engine using Hydrogen as an analytic Tool Mech. E. Predictive Methods in Engine research and Development Birmingham Nov 1993
- Warnaz J. “Chemistry of High Temperature Combustion of Alkanes up to Octane” Twentieth Symposium (International) n Combustion The Combustion Institute 845 856 1984
- Westbrook C. K. Dryer F “Chemical Kinetic Modeling of Hydrocarbon Combustion” Progress in Energy and Combustion Science 10 1 57 1984
- William C. “Combustion Chemistry” Springer-Verlag New York 1984