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Effect of Spark Discharge Duration and Timing on the Combustion Initiation in a Lean Burn SI Engine
Technical Paper
2021-01-0478
ISSN: 0148-7191, e-ISSN: 2688-3627
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SAE WCX Digital Summit
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English
Abstract
Meeting the increasingly stringent emission and fuel efficiency standards is the primary objective of the modern automotive research. Lean/diluted combustion is a promising avenue to realize high-efficiency combustion and reduce emissions in SI engines. Under diluted conditions, the flame propagation speed is reduced because of the reduced charge reactivity. Enhancing in-cylinder charge motion and turbulence, and thereby increasing the flame speed, is a possible way to harness the combustion process in SI engines. However, charge motion can have a significant effect on the spark ignition process because of the reduced discharge duration and frequent restrikes. A longer discharge duration can aid in the formation of a self-sustained flame kernel and subsequent stable ignition. Therefore, an empirical study is undertaken to investigate the effect of discharge duration and ignition timing on the ignition and early combustion in a port fueled SI engine, operated under lean conditions. Discharge duration is modulated from 1 ms to 8 ms through a continuous discharge strategy. Discharge current and voltage measurements are recorded during the engine operation to characterize the discharge process. In-cylinder charge is diluted using fresh air to achieve lean combustion. In-cylinder pressure measurement and heat release analysis are used to investigate the ignition and combustion characteristics of the engine. Preliminary results indicate that the impact of discharge duration is more pronounced in lean conditions and in the vicinity of the spark advance limit, when ignition process encounters significant challenge. While the discharge duration has a marginal effect on the ignition delay, cyclic variations and stability of the ignition process are notably impacted.
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Sandhu, N., Zhu, H., Leblanc, S., Yu, X. et al., "Effect of Spark Discharge Duration and Timing on the Combustion Initiation in a Lean Burn SI Engine," SAE Technical Paper 2021-01-0478, 2021.Data Sets - Support Documents
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References
- EIA 2020
- IEA Nov. 2020
- Yu , X. , Sandhu , N.S. , Yang , Z. , and Zheng , M. Suitability of Energy Sources for Automotive Application - A Review Applied Energy 271 115169 2020 https://doi:10.1016/j.apenergy.2020.115169
- Germane , G.J. , Wood , C.G. , and Hess , C.C. Lean Combustion in Spark-Ignited Internal Combustion Engines - A Review SAE Technical Paper 831694 1983 https://doi:10.4271/831694
- Attard , W.P. , and Blaxill , H. A Lean Burn Gasoline Fueled Pre-Chamber Jet Ignition Combustion System Achieving High Efficiency and Low NOx at Part Load SAE Technical Paper 2012-01-1146 2012 https://doi:10.4271/2012-01-1146
- Wei , H. , Zhu , T. , Shu , G. , Tan , L. , and Wang , Y. Gasoline Engine Exhaust Gas Recirculation - A Review Applied Energy 99 534 544 2012 https://doi:10.1016/j.apenergy.2012.05.011
- Zheng , M. , Reader , G.T. , and Hawley , J.G. Diesel Engine Exhaust Gas Recirculation - A Review on Advanced and Novel Concepts Energy Conversion and Management 45 6 883 900 2004 https://doi:10.1016/S0196-8904(03)00194-8
- Kuo , T.-W. What Causes Slower Flame Propagation in the Lean-Combustion Engine J. Eng. Gas Turbines Power 112 3 348 356 1990 https://doi:10.1115/1.2906502
- Quader , A.A. What Limits Lean Operation in Spark Ignition Engines — Flame Initiation or Propagation? SAE Transactions 85 2374 2387 1976
- Nakai , M. , Nakagawa , Y. , Hamai , K. , and Sone , M. Stabilized Combustion in a Spark Ignited Engine through a Long Spark Duration SAE Transactions 94 406 415 1985
- Arcoumanis , C. , and Whitelaw , J.H. Fluid Mechanics of Internal Combustion Engines—A Review Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 2016 https://doi:10.1243/PIME_PROC_1987_201_087_02
- Hamai , K. , Kawajiri , H. , Ishizuka , T. , and Nakai , M. Combustion Fluctuation Mechanism Involving Cycle-to-Cycle Spark Ignition Variation due to Gas Flow Motion in S.I. Engines Symposium (International) on Combustion 21 1 505 512 1988 https://doi:10.1016/S0082-0784(88)80279-0
- Jung , D. , Sasaki , K. , and Iida , N. Effects of Increased Spark Discharge Energy and Enhanced In-Cylinder Turbulence Level on Lean Limits and Cycle-to-Cycle Variations of Combustion for SI Engine Operation Applied Energy 205 1467 1477 2017 https://doi:10.1016/j.apenergy.2017.08.043
- Ives , M. 2017
- Jung , D. , Sasaki , K. , Sugata , K. , Matsuda , M. et al. Combined Effects of Spark Discharge Pattern and Tumble Level on Cycle-to-Cycle Variations of Combustion at Lean Limits of SI Engine Operation SAE Technical Paper 2017-01-0677 2017 https://doi:10.4271/2017-01-0677
- Sandhu , N. 2018
- Sayama , S. , Kinoshita , M. , Mandokoro , Y. , and Fuyuto , T. Spark Ignition and Early Flame Development of Lean Mixtures Under High-Velocity Flow Conditions: An Experimental Study International Journal of Engine Research 2018 10.1177/1468087417748517
- Yu , X. , Yang , Z. , Yu , S. , Ives , M. , and Zheng , M. 2017 10.1115/ICEF2017-3657
- Yu , S. , Xie , K. , Han , X. , Jeftic , M. , Gao , T. , and Zheng , M. A Preliminary Study of the Spark Characteristics for Unconventional Cylinder Charge With Strong Air Movement American Society of Mechanical Engineers Digital Collection 461 470 2012 https://doi:10.1115/ICEF2011-60132
- Günther , M. and Sens , M. Ignition Systems for Gasoline Engines: 3rd International Conference, November 3-4, 2016, Berlin, Germany 1 2017 Springer International Publishing : Imprint: Springer Cham 978-3-319-45504-4 2017 https://doi:10.1007/978-3-319-45504-4
- Zheng , M. , and Yu , S. Advanced Ignition Systems for Future Clean Combustion Engines: Review Journal of Automotive Safety and Energy 6 04 295 2015 https://doi:10.3969/j.issn.1674-8484.2015.04.001
- Alger , T. , Gingrich , J. , Mangold , B. , and Roberts , C. A Continuous Discharge Ignition System for EGR Limit Extension in SI Engines SAE International Journal of Engines 4 1 677 692 2011
- Chen , W. , Madison , D. , Dice , P. , Naber , J. et al. Impact of Ignition Energy Phasing and Spark Gap on Combustion in a Homogenous Direct Injection Gasoline SI Engine Near the EGR Limit SAE Technical Paper 2013-01-1630 2013 https://doi:10.4271/2013-01-1630
- Ryan , T.W. , Lestz , S.S. , and Meyer , W.E. Extension of the Lean Misfire Limit and Reduction of Exhaust Emissions of an SI Engine by Modification of the Ignition and Intake Systems SAE Technical Paper 740105 1974 https://doi:10.4271/740105
- Jung , D. , and Iida , N. An Investigation of Multiple Spark Discharge Using Multi-Coil Ignition System for Improving Thermal Efficiency of Lean SI Engine Operation Applied Energy 212 322 332 2018 https://doi:10.1016/j.apenergy.2017.12.032
- Zhu , H. , Yu , X. , Tan , Q. , Zheng , M. et al. A Preliminary Study of the Discharge Current and Spark Energy for the Multi-Coil Offset Strategy SAE Technical Paper 2019-01-0725 2019 https://doi:10.4271/2019-01-0725
- Xie , K. 2018
- Heywood , J.B. Internal Combustion Engine Fundamentals New York McGraw-Hill 1988 ISBN 978-0-07-028637-5
- Johansson , B. Cycle to Cycle Variations in S.I. Engines - The Effects of Fluid Flow and Gas Composition in the Vicinity of the Spark Plug on Early Combustion SAE Technical Paper 962084 1996 https://doi:10.4271/962084
- Ozdor , N. , Dulger , M. , and Sher , E. Cyclic Variability in Spark Ignition Engines A Literature Survey SAE Technical Paper 940987 1994 https://doi:10.4271/940987