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High-Fidelity Numerical Modeling of Spark Plug Erosion
Technical Paper
2019-01-0215
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Spark plug erosion is critical in determining the overall efficiency of a spark ignition engine. Over its lifetime, a spark plug is subject to millions of firings. Each spark event results in material erosion due to several mechanisms such as melting, vaporization, sputtering and oxidation. With electrode wear, the inter-electrode spacing increases and a larger voltage difference is required to initiate the spark. The probability of engine misfires also increases with electrode erosion. Once a critical gap is reached, the energy in the ignition coil is not enough to cause a spark breakdown, and the spark plug must be replaced. Due to the long relevant time scales over which erosion occurs, and the difficulty of analyzing the spark plug environment during operation, determining spark plug lifetime typically requires extensive field testing. A high fidelity commercial thermal plasma solver, VizSpark is used simulate electrode erosion due to spark events. The model preserves key arc physics such as current conservation, conjugate heat transfer, fluid flow and electrode ablation. The solution framework includes the capability of coupling high fidelity arc physics with a dynamically deforming spark-plug electrode. A phenomenological model for electrode erosion based on energy is derived from prior experimental work on single-pulse electrode erosion. The energy-based electrode erode model is validated against experimental results, and 3-D electrode erosion simulations in stationary and cross-flow were performed.
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Breden, D., Karpatne, A., Suzuki, K., and Raja, L., "High-Fidelity Numerical Modeling of Spark Plug Erosion," SAE Technical Paper 2019-01-0215, 2019, https://doi.org/10.4271/2019-01-0215.Also In
References
- Soldera , F.A. , Mucklich , F.T. , Hrastnik , K. , and Kaiser , T. Description of the Discharge Process in Spark Plugs and Its Correlation with the Electrode Erosion Patterns IEEE Transaction on Vehicular Technology 53 4 2004
- Lasagni , A. , Soldera , F. , and Mucklich , F. Quantitative Investigation of Material Erosion Caused by High-Pressure Discharges in Air and Nitrogen Zeitschrift für Metallkunde 95 2 102 108
- Maly , R. Spark Ignition: Its Physics and Effect on the Internal Combustion Engine Fuel Economy 1984 91 148
- Lin , H. , Brady , M.P. , Richards , R.K. , and Layton , D.M. Characterization of Erosion and Failure Processes of Spark Plugs after Field Service in Natural Gas Engines Wear 259 1063 1067 2005
- Javan , S. , Housseini , S.V. , Alaviyoun , S.S. , and Ommi , F. Effect of Electrode Erosion on the Required Ignition Voltage of Spark Plug in CNG Spark Ignition Engine The Journal of Engine Research 26 31 39 2012
- Akram , M. and Lundgren , E. The Evolution of Spark Discharges in Gases: I. Macroscopic Models J. Phys. D: Appl. Phys. 29 2129 2136 1996
- Arkam , M. The Evolution of Spark Discharges in Gases: II. Numerical Solution of One-Dimensional Models J. Phys. D: Appl. Phys. 29 2137 2147 1996
- Reinmann , R. and Akram , M. Temporal Investigation of a Fast Spark Discharge in Chemically Inert Gases J. Phys. D: Appl. Phys. 30 1125 1134 1997
- Thiele , M. , Selle , S. , Riedel , U. , Warnatz , J. et al. A Detailed Two-Dimensional Numerical Study of Spark Ignition Including Ionization SAE Technical Paper 2002-01-1110 2002 10.4271/2002-01-1110
- Dahms , R. , Fansler , T.D. , Drake , M.C. , Kuo , T.W. et al. Modeling Ignition Phenomena in Spray-Guided Spark-Ignited Engines Proceedings of the Combustion Institute 32 2743 2750 2009
- Ekici , O. , Ezekoye , O.A. , Hall , M.J. , and Matthews , R.D. Thermal and Flow Fields Modelig of Fast spark discharges in air Journal of Fluids Engineering 129 55 2007
- 2016
- Shiraishi , T. , Teraji , A. , and Moriyoshi , Y. The Effects of Ignition Environment and Discharge Waveform Characteristics on Spark Channel Formation and Relationship between the Discharge Parameters and the EGR Combustion Limit SAE Int. J. Engines 9 1 171 178 2015 10.4271/2015-01-1895
- Breden , D. , Karpatne , A. , and Raja , L. Modelling of Electrode Erosion for Prediction of Spark Plug Lifetime WCX World Congress Experience Detroit 2018
- Mittal , R. and Iaccarino , G. Immersed Boundary Methods Annu. Rev. Fluid Mechanics 37 239 261 2005
- Patnakar , S. Numerical Heat Transfer and Fluid Flow New York McGraw-Hill 1980
- Billoux , T. , Cressault , T. , Teulet , P. , and Gleizes , A. Calculation of the Net Emission Coefficient of an Air Thermal Plasma at Very High Pressure Journal of Physics: Conferene Series 406 2012
- Soldera , F. , Lasagni , A. , Mucklich , F. , Kaiser , T. et al. Determination of the Cathode Erosion and Temperature for the High Voltage Discharges Using FEM Simulations Computational Materials Science 32 123 139 2005
- Lasagni , A. , Soldera , F. , and Mucklich , F. FEM Simulation of Local Heating and Melting During Electrical Discharge Plasma Impact Modelling Simul. Mater. Sci. Eng. 12 835 844 2004
- Raizer , Y. Gas Discharge Physics Springer 1991