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Numerical Investigation of Spark Ignition Events in Lean and Dilute Methane/Air Mixtures Using a Detailed Energy Deposition Model
Technical Paper
2016-01-0609
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
It is beneficial but challenging to operate spark-ignition engines under highly lean and dilute conditions. The unstable ignition behavior can result in downgraded combustion performance in engine cylinders. Numerical approach is serving as a promising tool to identify the ignition requirements by providing insight into the complex physical/chemical phenomena. An effort to simulate the early stage of flame kernel initiation in lean and dilute fuel/air mixture has been made and discussed in this paper. The simulations are set to validate against laboratory results of spark ignition behavior in a constant volume combustion vessel. In order to present a practical as well as comprehensive ignition model, the simulations are performed by taking into consideration the discharge circuit analysis, the detailed reaction mechanism, and local heat transfer between the flame kernel and spark plug. The energy profile and the energy source geometry are investigated in detail to represent the physics of electrical discharge. It was observed in the experiments that a sufficiently high ambient pressure is necessary for a successful ignition event in the lean and dilute mixture when the spark plug gap size and primary energy input are held constant. By adopting realistic energy levels, this detailed energy deposition model showed the capability to reasonably present such ignition behavior transition. The unique combination of energy deposition profile and geometry reveals the complexity of electrical discharge during the spark ignition event. The response of the combustible gas to the energy deposition showed dependency on the volumetric energy density, energy source’s surface area, temperature gradient at the energy source boundary, as well as the heat transfer condition local to the flame kernel.
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Zhang, A., Scarcelli, R., Lee, S., Wallner, T. et al., "Numerical Investigation of Spark Ignition Events in Lean and Dilute Methane/Air Mixtures Using a Detailed Energy Deposition Model," SAE Technical Paper 2016-01-0609, 2016, https://doi.org/10.4271/2016-01-0609.Also In
References
- Alger , T. , Gingrich , J. , Mangold , B. , and Roberts , C. A Continuous Discharge Ignition System for EGR Limit Extension in SI Engines SAE Int. J. Engines 4 1 677 692 2011 10.4271/2011-01-0661
- Czekala , M. , Johnston , B. , Morganti , C. , and McRoy , G. Matching Ignition System Multi-Spark Calibration to the Burn-Rate of an Engine to Extend Ignitability Limits SAE Technical Paper 981046 1998 10.4271/981046
- Tanoue , K. , Kuboyama , T. , Moriyoshi , Y. , Hotta , E. et al. Extension of Lean and Diluted Combustion Stability Limits by Using Repetitive Pulse Discharges SAE Technical Paper 2010-01-0173 2010 10.4271/2010-01-0173
- Zhang , A. , Cung , K. , Lee , S. , Naber , J. et al. The Impact of Spark Discharge Pattern on Flame Initiation in a Turbulent Lean and Dilute Mixture in a Pressurized Combustion Vessel SAE Int. J. Engines 6 1 435 446 2013 10.4271/2013-01-1627
- Wallner , T. , Matthias , N. , Sevik , J. , and Scarcelli , R. Extending the Lean and EGR Dilute Operating Limits of a Light-Duty GDI Engine using Alternative Spark-Based Ignition Proceedings of 2nd International Conference on Ignition Systems for Gasoline Engines (IAV) 2014
- Law , C.K. Combustion Physics Cambridge University Press Cambridge 2006
- Smith , J. , Szekely G. Jr , Solomon , A. , and Parrish , S. A Comparison of Spray-Guided Stratified-Charge Combustion Performance with Outwardly-Opening Piezo and Multi-Hole Solenoid Injectors SAE Int. J. Engines 4 1 1481 1497 2011 10.4271/2011-01-1217
- Maly , R. Ignition model for spark discharges and the early phase of flame front growth Symp. Int. Combust. 18 1 1747 1754 1981 10.1016/S0082-0784(81)80179-8
- Tan , Z. and Reitz , R.D. An ignition and combustion model based on the level-set method for spark ignition engine multidimensional modeling Combust. Flame 145 1-2 1 15 2006 10.1016/j.combustflame.2005.12.007
- Duclos , J.M. and Colin , O. Arc and Kernel Tracking Ignition Model for 3D Spark-Ignition engine calculations Int. Symp. Diagn. Model. Combust. Intern. Combust. Engines 1 46 2001
- Dahms , R.N. , Drake , M.C. , Fansler , T.D. , Kuo , T.W. et al. Understanding ignition processes in spray-guided gasoline engines using high-speed imaging and the extended spark-ignition model SparkCIMM. Part A: Spark channel processes and the turbulent flame front propagation Combust. Flame 158 11 2229 2244 2011 10.1016/j.combustflame.2011.03.012
- Lucchini , T. , Cornolti , L. , Montenegro , G. , D'Errico , G. et al. A Comprehensive Model to Predict the Initial Stage of Combustion in SI Engines SAE Technical Paper 2013-01-1087 2013 10.4271/2013-01-1087
- Yang , X. , Solomon , A. , and Kuo , T. Ignition and Combustion Simulations of Spray-Guided SIDI Engine using Arrhenius Combustion with Spark-Energy Deposition Model SAE Technical Paper 2012-01-0147 2012 10.4271/2012-01-0147
- Scarcelli , R. , Matthias , N. , and Wallner , T. Numerical Investigation of Combustion in a Lean Burn Gasoline Engine SAE Technical Paper 2013-24-0029 2013 10.4271/2013-24-0029
- Givler , S. , Raju , M. , Pomraning , E. , Senecal , P. et al. Gasoline Combustion Modeling of Direct and Port-Fuel Injected Engines using a Reduced Chemical Mechanism SAE Technical Paper 2013-01-1098 2013 10.4271/2013-01-1098
- Ko , Y. , Anderson , R.W. , and Arpaci , V.S. Spark ignition of propane-air mixtures near the minimum ignition energy: Part I. An experimental study Combust. Flame 83 1-2 75 87 1991 10.1016/0010-2180(91)90204-O
- Richards , K.J. , Senecal , P.K. , and Pomraning , E. CONVERGE (Version 2.1.0) Convergent Science, Inc. Middleton, WI 2013
- Smith , G.P. , Golden , D.M. , Frenklach , M. , Moriarty , N.W. et al. GRI-MECH 3.0 http://www.me.berkeley.edu/gri_mech/
- Maly , R.R. and Herweg , R. Spark Ignition and Combustion in Four-Stroke Gasoline Engines Flow and Combustion in Reciprocating Engines Springer Berlin Heidelberg 1 66 2009
- Paschen , F. Ueber die zum Funkenübergang in Luft, Wasserstoff und Kohlensäure bei verschiedenen Drucken erforderliche Potentialdifferenz Ann. Phys. 273 5 69 96 1889 10.1002/andp.18892730505
- Roth , W. , Guest , P.G. , Elbe , G. von , and Lewis , B. Heat Generation by Electric Sparks and Rate of Heat Loss to the Spark Electrodes J. Chem. Phys. 19 12 1530 1535 1951 10.1063/1.1748116
- Abidin , Z. and Chadwell , C. Parametric Study and Secondary Circuit Model Calibration Using Spark Calorimeter Testing SAE Technical Paper 2015-01-0778 2015 10.4271/2015-01-0778
- Sher , E. , Ben-Ya’Ish , J. , and Kravchik , T. On the birth of spark channels Combust. Flame 89 2 186 194 1992 10.1016/0010-2180(92)90027-M
- Ishii , K. , Tsukamoto , T. , Ujiie , Y. , and Kono , M. Analysis of ignition mechanism of combustible mixtures by composite sparks Combust. Flame 91 2 153 164 1992 10.1016/0010-2180(92)90097-9
- Jozef , J. , Michikata , K. , and Mitsuhiro , T. Flammability Limits Combustion Phenomena CRC Press 2009
- Brownlee , C. , Pegoraro , V. , Shankar , S. , McCormick , P. et al. Physically-based interactive schlieren flow visualization 2010 10.1109/PACIFICVIS.2010.5429599