This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Modeling of Early Pressure Rise and Flame Growth in a Spark Ignition Engine
Annotation ability available
Sector:
Language:
English
Abstract
A thermodynamical model of the ignition and flame growth process was developed to understand and minimize cycle-to-cycle variations in pressure due to minor differences in flame kernel growth at the spark plug electrode between cycles. Initial flame kernel size after the spark breakdown process was determined by solving the one-dimensional cylindrical shock flow equation. Overall reaction rates, flame speeds including turbulence and intensity, high temperature equilibrium and other thermodynamic properties were calculated by peripheral sub-models. Relative effects of spark power, heat loss to the spark plug, and the chemical heat release were studied under varying engine conditions. Results show that breakdown energy has a significant effect on the formation and size of the initial kernel and that the effect of flame kernel velocity on subsequent combustion was considerable at specific engine conditions. Additionally, an appreciable change of rate of pressure rise during glow and arc discharge modes was predicted with changes in spark power and engine speed. This was confirmed experimentally.
Recommended Content
Technical Paper | Effects of Railplugs on the Dilution Tolerance of a Spark Ignition Engine |
Authors
Citation
Anbarasu, M., Abata, D., and Moilanen, P., "Modeling of Early Pressure Rise and Flame Growth in a Spark Ignition Engine," SAE Technical Paper 941930, 1994, https://doi.org/10.4271/941930.Also In
References
- Richard Brokaw S. “Alignment Charts for Transport Properties Viscosity, Thermal Conductivity, and Diffusion Coefficients for Non-polar Gases and Gas Mixtures at Low Density” NASA-TR R-BI. 1961
- Ballal Lefebvre, A.H. “The Influence of Flow Parameters on Minimum Ignition Energy and Quenching Distance” 14th Symposium on Combustion P1473 The combustion Institute 1972
- Chen Changyou Veshagl Ali “A Pre-mixed Turbulent Flame Velocity Model Based on Dimensional Reasoning” SAE Paper 910077 1991
- Ferguson R. Colin “Internal Combustion Engines, Applied Thermal Sciences” John Wiley & Sons. Inc. 1986
- Isshiki, N. Nishiwaki, N. Proceedings-of the Fifth Heat Transfer Conference II 344 378 1974
- Gautam Kalghatgi T. “Spark Ignition, Early Flame Development and Cyclic Variation in I.C. Engines” SAE paper 870163 1987
- Ko Yongseo Anderson, W. Richard “Electrode Heat Transfer During Spark Ignition” SAE Paper 892083 2003 2014
- Lim, M.T. Anderson, R.W Arpaci, V.S. “Prediction of Spark Kernel Development in Constant Volume Combustion” Combustion and Flame Vol 69 303 316 1987
- Maly R. Vogel M. “Initiation and propagation of flame fronts in lean CH 4 - Air Mixtures by the three modes of the Ignition Spark” Seventeenth Symposium (I nternational on Combustion 821 831 1978
- Maly, R. R. “Ignition Model for Spark Discharges and Early Phase of Flame Front Growth” Eighteenth Symposium (International) on Combustion 1747 1981
- Maly Rudolf “Spark ignition: Its Physics and Effect on the International Combustion Engine” Fuel Economy in road vehicles powered by spark ignition engines Eds. Hilliard C. John Springer S. George Plenum Press Newyork and London 91 148 1984
- Kanury Murty A. “Introduction to Combustion Phenomena” Gordon and Breach Science Publishers 1977
- Moilanen C. Peter Tarly Pressure Development due to Flame Kernel Growth in a Spark Ignited Engine” M.S. thesis Michican Technological University 1993
- Pischinger S. Heywood B. John ‘A Model for Flame Kernel Development in a Spark-Ignition Engine 23rd International Symposium on Combustion 1990
- Plooster N. Myron “Shock wave from line sources. Numerical Solutions and Experimental Measurements” The physics of fluids 13 11 Nov 1970
- Plooster N. Myron “Numerical Simulation of Spark Discharges in Air” The Physics of Fluids 14 10 Oct 1971
- Refael S. Sher E. “A theoretical study of the Ignition of a reactive medium by means of an electrical discharge” Combustion and Flame The combustion I nstitution 59 17 30 1985
- Richtmyer R. Morton K “Difference Methods for Initial Value Problems” Interscience publishers New York 1967
- Sher E. Refael S. “Numerical Analysis of the Early Phase Development of Spark-ignited Flames in CH4-Air Mixture” 19th Symposium (International) on 4 Combustion The Combustion Institute 251 257 1982
- Svehla A. Roger Mcbride Bonnie J. “Fortran IV Computer Program For Calculation of Thermodynamic and Transport Properties of Complex Chemical Systems” NASA TN D-7056 Jan 1973
- Taylor Geoffrey, F.R.S “Formation of blast wave by very intense explosion, 1. Theoretical discussion” Proceedings of Royal Society London 201 159 174 Mar 1950
- Westbrook K. Charles Dryer L. Frederick “Simplified Reaction Mechanisms for the Oxidation of Hydrocarbon Fuels in Flames” Combustion Science Technology 43 333 339 1985