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Cyclic Variations of Initial Flame Kernel Growth in a Honda VTEC-E Lean-Burn Spark-Ignition Engine
Technical Paper
2000-01-1207
ISSN: 0148-7191, e-ISSN: 2688-3627
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SAE 2000 World Congress
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English
Abstract
Lean combustion in spark-ignition engines has long been recognised as a means of reducing both exhaust emissions and fuel consumption. However, problems associated with cycle-by-cycle variations in flame initiation and development limit the range of lean-burn operation. An experimental investigation was undertaken in order to quantify the effects of spark energy released and initial flame kernel growth on the cyclic variability of IMEP and crank angle at which 5% mass fraction was burned in a Honda VTEC-E, stratified-charge, pentroof-type, single-cylinder, optically accessed, spark-ignition engine. Simultaneous CCD images of the flame at the spark plug were acquired from two orthogonal views (one through the piston crown and one through the pentroof) on a cycle-by-cycle basis during the first 40 crank angle degrees after ignition timing, for isooctane port injection at an air to fuel ratio of 22, engine speed of 1500 RPM, 30% volumetric efficiency and 40° crank angle spark advance. The stage of the first 40° crank angle after ignition timing corresponded to the average time of 5% mass fraction burned. Image acquisition was synchronised with in-cylinder pressure, spark voltage and spark current sampling, for each of the following four spark-plug orientations: upstream, downstream and two crossflow positions of the ground electrode relative to the mean ensemble-averaged velocity vector at the spark-plug location at ignition timing. The measurements showed large cycle-by-cycle variations in flame size, shape and location. The flame size (projected enflamed areas through the two views and estimated enflamed volume) at 40° crank angle after ignition timing was found to correlate with coefficients as high as -0.96 with the crank angle of 5% mass fraction burned and 0.85 with IMEP. This degree of correlation between the flame size and the crank angle of 5% mass fraction burned or IMEP, reduced as the crank angle after ignition timing decreased, but correlations were still as large as -0.64 between the flame size at 10° crank angle after ignition timing and the crank angle of 5% mass fraction burned. The crossflow orientations produced the lowest levels of cyclic variability in IMEP, the upstream one the highest and the downstream orientation performed in between. The spark duration was found to vary from 12° to 22° crank angle on a cycle-by-cycle basis, being 19° crank angle on average, and this in conjunction with the behaviour of the flame-size correlations with the crank angle of 5% mass fraction burned suggests that the “quality” of a cycle is determined within the short time of the spark discharge. High spark energies were generally associated with short durations of the spark event and always faster than average initial flame kernel growth cycles. The correlation coefficient between spark energy and flame volume was as high as 0.76 at 10° crank angle after ignition timing, decreasing to 0.59 at 20° crank angle after ignition timing. The displacement of the flame luminous centre was not found to produce very strong correlation coefficients with the crank angle of 5% mass fraction burned (<0.55), but the correlations with the spark energy and, mainly, duration were quite strong (0.5-0.7), especially for the later stage of 20° crank angle after ignition timing rather than the earlier one of 10° crank angle after ignition timing. Although mostly associated with low spark energies, long spark durations could also produce fast cycles presumably because they provided an ignition window large enough to mask the effects of in-cylinder variations. For cycles with a given spark energy, the ones with the longest duration always produced higher than average initial flame kernel growth cycles.
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Aleiferis, P., Taylor, A., Whitelaw, J., Ishii, K. et al., "Cyclic Variations of Initial Flame Kernel Growth in a Honda VTEC-E Lean-Burn Spark-Ignition Engine," SAE Technical Paper 2000-01-1207, 2000, https://doi.org/10.4271/2000-01-1207.Also In
References
- Hopkinson, B. “The Effect of Mixture Strength and Scavenging on Thermal Efficiency” Proceedings of IMechE 417 1908
- Ricardo, H. R. “Report of the Empire Motor Fuels Committee” Proceedings of the Institution of Automotive Engineers 18 1923
- Jackson, M. W. “The Influence of Air-Fuel Ratio, Spark Timing and Combustion Chamber Deposits in Exhaust Hydrocarbon Emission” SAE Technical Progress Series, Vehicle Emissions 6 175 191 1964
- Lee, R. C. Wimmer, D. B. “Exhaust Emission Abatement by Fuel Variations to Produce Lean Combustion” SAE Paper 680769 1968
- Tanuma, T. Sasaki, K. Kaneko, T. Kawasaki, H. “Ignition, Combustion and Exhaust Emissions of Lean Mixtures in Automotive Spark-Ignition Engines” SAE Paper 710159 1971
- Patterson, D. J. “Cylinder Pressure Variations, a Fundamental Combustion Problem” SAE Paper 660129 1966
- Germane, G. J. Wood, C. G. Hess, C. C. “Lean Combustion in Spark-Ignited Internal Combustion Engines - A Review” SAE Paper 831694 1983
- Young, M. B. “Cyclic Dispersion in the Homogenous-Charge Spark-Ignition Engine - A Literature Survey” SAE Paper 810020 1981
- Lancaster, D. R. Krieger, R. B. Sorenson, S. C. Hull, W. L. “Effects of Turbulence on Spark-Ignition Engine Combustion” SAE Paper 760160 1976
- Ozdor, N. Dulger, M. Sher, E. “Cyclic Variability in a Spark-Ignition Engines - A Literature Survey” SAE Paper 940987 1994
- Quader, A. A. “Lean Combustion and the Misfire Limit in Spark-Ignition Engines” SAE Paper 741055 1974
- Quader, A. A. “What Limits Lean Operation in Spark-Ignition Engines - Flame Initiation or Propagation?” SAE Paper 760760 1976
- Cole, J. B. Swords, M. D. “On the Correlation between Gas Velocity and Combustion Pressure Fluctuations in a Spark-Ignition Engine” 18 th Symposium (International) on Combustion 1837 1846 1981
- Witze, P. O. Martin, J. K. Borgnakke C. “Conditionally-Sampled Velocity and Turbulence Measurements in a Spark-Ignition Engine” Combustion Science and Technology 36 301 317 1984
- Kalghatgi, G. T. “Early Flame Development in a Spark-Ignition Engine” Combustion and Flame 60 299 308 1985
- Hall, M. J. Bracco, F. V. “A Study of Velocities and Turbulence Intensities Measured in Firing and Motored Engines” SAE Paper 870453 1987
- Hall, M. J. “The Influence of Fluid Motion on Flame Kernel Development and Cyclic Variation in a Spark-Ignition Engine” SAE Paper 890991 1989
- Baritaud, T. A. “Combustion and Fluid Dynamic Measurements in a Spark-Ignition Engine: Effects of Thermochemistry and Velocity Field; Turbulent Flame Speeds” SAE Paper 892098 1989
- Witze, P. O. Hall M. J. Bennett, M. J. “Cycle-Resolved Measurements of Flame Kernel Growth and Motion Correlated with Combustion Duration” SAE Paper 900023 1990
- Hu, Z. Whitelaw, J. H. Vafidis, C. “Flame Propagation Studies in a Four-Valve Pentroof-Chamber Spark-Ignition Engine SAE Paper 922321 1992
- Whitelaw, J. H. Xu, H. M. “An Experimental Study of Gas Velocity, Flame Propagation and Pressure in a Spark-Ignition Engine” SAE Paper 932702 1993
- Johansson, B. “Influence of the Velocity near the Spark Plug on Early Flame Development” SAE Paper 930481 1993
- Johansson, B. “The Influence of Different Frequencies in the Turbulence on Early Flame Development in a Spark-Ignition Engine” SAE Paper 940990 1994
- Carabateas, N. E. “Two-Phase Flow and Combustion in SI Engines” Ph.D. Thesis University of London 1997
- Ault, J. R. “Measurements and Imaging of Flow and Combustion in Spark-Ignition Engines” M.Phil. Thesis University of London 1999
- Ault, J. R. Carabateas, N. E. Taylor, A. M. K. P. Whitelaw, J.H. Ishii, K. Sasaki, T. Urata, Y. “Cyclic Variability of Lean Combustion and Gas Motion at the Spark Plug of a VTEC-E Honda Engine” Proceedings of the 10 th International Symposium on Transport Phenomena in Thermal Science and Process Engineering 743 748 Kyoto, Japan 1997
- Le Coz, J. F. “Cycle-to-Cycle Correlations between Flow-field and Combustion Initiation in an SI Engine” SAE Paper 920517 1992
- Sztenderowicz, M. L. Heywood, J. B. “Mixture Non-Uniformity Effects on SI Engine Combustion Variability” SAE Paper 902142 1990
- Sztenderowicz, M. L. Heywood, J. B. “Cycle-to-Cycle IMEP Fluctuations in a Stoicheiometrically-Fuelled SI Engine at Low Speed and Load” SAE Paper 902143 1990
- Grünefeld, G. Beushausen, V. Andresen, P. Hentschel, W. “A Major Origin of Cyclic Energy Conversion Variations in SI Engines: Cycle-by-Cycle Variations of the Equivalence Ratio and Residual Gas of the Initial Charge” SAE Paper 941880 1994
- Johansson, B. Neij, H. Alden, M. Juhlin, G. “Investigations of the Influence of Mixture Preparation on Cyclic Variations in a SI-Engine Using Laser Induced Fluorescence” SAE Paper 950108 1995
- Johansson, B. Neij, H. Juhlin, G. Alden, M. “Residual Gas Visualisation with Laser Induced Fluorescence” SAE paper 952463 1995
- Johansson, B. “Cycle-to-Cycle Variations in SI Engines - The Effects of Fluid Flow and Gas Composition in the Vicinity of the Spark Plug on Early Combustion” SAE Paper 962084 1996
- Lee, K.-H. Foster, D. E “Cycle-by-Cycle Variations in Combustion and Mixture Concentration in the Vicinity of the Spark-plug gap” SAE Paper 950814 1995
- Koenig, M. Hall, M. J. “Measurements of Local In-Cylinder Fuel Concentration Fluctuations in a Firing SI Engine” SAE Paper 971644 1997
- Berckmüller, M. “A Study of Mixture Formation in a Lean-Burn Research Engine Using Laser Fluorescence Imaging” Ph.D. Thesis Cranfield University 1996
- Berckmüller, M. Tait, N. P. Greenhalgh, D. A. “The Influence of Local Fuel Concentration on Cyclic Variability of a Lean-Burn Stratified-Charge Engine” SAE Paper 970826 1997
- Ishii, K. Sasaki, T. Urata, Y. Kagawa, J. Matsutani, W. “Cyclic Variation of Heat Flux on Spark Plug” JSME Paper 970717 1997
- Maly, R. “Spark Ignition: Its Physics and Effect on the Internal Combustion Engine” “Fuel Economy in Road Vehicles Powered by Spark-Ignition Engines” Hilliard, J. C. Springer, G. S. Plenum Press New York 1984
- Maly, R. Vogel, M. “Initiation and Propagation of Flame Fronts in Lean CH 4 -Air Mixtures by the Three Modes of the Ignition Spark” 17 th Symposium (International) on Combustion 821 831 1978
- Sher, E. Keck, J. C. “Spark Ignition of Combustible Gas Mixtures” Combustion and Flame 66 17 25 1986
- Kalghatgi, G. T. “Spark Ignition, Early Flame Development and Cyclic Variation in IC Engines” SAE Paper 870163 1987
- Verhoeven, D. “Spark Heat Transfer Measurements in Flowing Gases” SAE Paper 952450 1995
- De Soete, G. C. “Propagation Behaviour of Spark Ignited Flames in Early Stages” IMechE Conference on Combustion in Engineering 1 1983
- Kalghatgi, G. T. “Flame Initiation and Development from Glow Discharges - Effect of Electrode Deposits” Combustion and Flame 77 321 336 1989
- Bjorge, T. Max, E. “Influence of Electrode Orientation, Temperature and Pressure on Lean Ignition Limits of Methane” Heat and Mass Transfer in Gasoline and Diesel Engines ICHMT 632 646 Dubrovnik 1987
- Ho, C. M. Santavicca, D. A. “Turbulence Effects on Early Flame Kernel Growth” SAE Paper 872100 1987
- Hamai, K. Kawajiri, H. Ishizuka, T. Nakai, M. “Combustion Fluctuation Mechanism Involving Cycle-to-Cycle Spark Ignition Variation due to Gas Flow Motion in SI Engines” 21 st Symposium (International) on Combustion 505 512 1986
- Nakai, M. Nakgawa, Y. Hamai, K. Sone, M. “Stabilised Combustion in a Spark Ignited Engine through a Long Spark Duration” SAE Paper 850075 1985
- Hancock, M. S. Buckingham, D. J. Belmont, M. R. “The Influence of Arc Parameters on Combustion in a Spark-Ignition Engine” SAE Paper 860321 1986
- Ziegler, G. W. F. Maly, R. Wagner, E. P. “Effect of Ignition System Design on Flammability Requirements in Ultra-Lean Turbulent Mixtures” IMechE Conference on Combustion in Engineering 1 1983
- Ziegler, G. F. W. Wagner, E. P. Saggau, B. Maly, R. Herden, W. “Influence of Breakdown Ignition System on Performance and Emission Characteristics” SAE Paper 840992 1984
- Anderson, R. W. Asik, J. R. “Lean Air-Fuel Ignition System Comparison in a Fast-Burn Engine” SAE Paper 850076 1985
- Anderson, R. W. “The Effect of Ignition Power on Fast-Burn Engine Combustion” SAE Paper 870549 1987
- Pischinger, S. Heywood, J. B. “A Study of Flame Development and Engine Performance with Breakdown Ignition Systems in a Visualisation Engine” SAE Paper 880518 1988
- Cho, Y. S. Santavicca, D. A. Sonntag, R. M. “The Effect of Spark Power on Spark Ignited Flame Kernel Growth” SAE Paper 922168 1992
- Shen, H. Jiang, D. “Investigation of the Flame Initiation and Early Development in a Spark-Ignition Engine” SAE Paper 922239 1992
- Ozdor, N. Dulger, M. Sher, E. “An Experimental Study of the Cyclic Variability in Spark-Ignition Engines” SAE Paper 860611 1996
- Herweg, R. Begleris, P. Zettlitz, A. Ziegler, G. F. W. “Flow-field Effects on Flame Kernel Formation in a Spark-Ignition Engine” SAE Paper 881639 1988
- Arcoumanis, C. Bae, C.-S. “Correlation between Spark Ignition Characteristics and Flame Development in a Constant-Volume Combustion Chamber” SAE Paper 920413 1992
- Ziegler, G. F. W. Wagner, E. P. Maly, R. “Ignition of Lean Methane-Air Mixtures by High Pressure Glow and Arc Discharges” 20 th Symposium (International) on Combustion 1817 1824 1984
- Bae, C. S. Lee, J. S. Ha, J. Y. “High-Frequency Ignition Characteristics in a 4-Valve SI Engine with Tumble-Swirl Flows” SAE Paper 981433 1998
- Teets, R. E. Sell, J. A. “Calorimetry of Ignition Sparks” SAE Paper 880204 1988
- Stone, C. R. Steele, A. B. “Measurements and Modelling of Ignition System and its Effect on Engine Performance” Proceedings of IMechE 203 277 286 1989
- Rashidi, M. “The Nature of Cycle-by-Cycle Variations in the SI Engine from High-Speed Photographs” Combustion and Flame 42 111 122 1981
- Gatowski, J. A. Heywood, J. B. Deleplace, C. “Flame Photographs in a Spark-Ignition Engine” Combustion and Flame 56 71 81 1984
- Heywood, J. B. Vilchis, F. R. “Comparison of Flame Development in a Spark-Ignition Engine Fuelled with Propane and Hydrogen” Combustion Science and Technology 38 313 324 1984
- Gatowski, J. A. Heywood, J. B. “Effect of Valve Shrouding and Squish on Combustion in Spark-Ignition Engines” SAE Paper 852009 1985
- Tagalian, J. L. Heywood, J. B. “Flame Initiation in a Spark-Ignition Engine” Combustion and Flame 64 243 246 1986
- Keck, J. C. Heywood, J. B. Noske, G. “Early Flame Development and Burning Rates in Spark-Ignition Engines and their Cyclic Variability” SAE Paper 870164 1987
- Baritaud, T. A. “High-Speed Schlieren Visualisation of Flame Initiation in a Lean Operating SI Engine” SAE Paper 872152 1987
- Weaver, C. E. Santavicca, D. A. “Correlation of Cycle-Resolved Flame Kernel Growth and Cylinder Pressure in an Optically Accessible Engine” SAE Paper 922171 1992
- Pischinger, S. Heywood, J. B. “How Heat Losses to the Spark-plug electrodes Affect Flame Kernel Development in an SI-Engine” SAE Paper 900021 1990
- Hacohen, J. Belmont, M. R. Thurley, R. W. Thomas, J. C. Morris, E. L. Buckingham, D. J. “Experimental and Theoretical Analysis of Flame Development and Misfire Phenomena in a Spark-Ignition Engine” SAE Paper 920415 1992
- Hacohen, J. Belmont, M. R. Yossefi, D. Thomas, J. C. Thurley, R. “The Effect of Flame Kernel Surface Stretch on Cyclic Variability in an SI Engine” SAE Paper 932717 1993
- Hacohen, J. Belmont, M. R. Ashcroft, S. J. “Flame Speeds in a Spark-Ignition Engine” SAE Paper 942050 1994
- Bates, S. C. “Flame Imaging Studies in a Spark-Ignition Four-Stroke Internal Combustion Optical Engine” SAE Paper 890154 1989
- Bates, S. C. “Flame Imaging Studies of Cycle-by-Cycle Combustion Variations in a SI Four-Stroke Engine” SAE Paper 892086 1989
- Bates, S. C. “Further Insights into SI Four-Stroke Combustion Using Flame Imaging” Combustion and Flame 85 331 352 1991
- Bates, S. C. “Further Imaging Studies of Flame Development in an SI Four-Stroke Engine” “Dynamics of Deflagrations and Reactive Systems: Flames” Kuhl, A. L. Leyer, J.-C. Borisov, A. A. Sirignano, W. A. Progress in Astronautics and Aeronautics 131 335 377 AIAA Washington 1991
- Arcoumanis, C. Bae, C. S. Hu, Z. “Flow and Combustion in a Four-Valve Spark-Ignition Optical Engine” SAE Paper 940475 1994
- Arcoumanis, C. Bae, C. S. Whitelaw, J. H. Xu, H. M. “Imaging of Lean Premixed Flames in Spark-Ignition Engines” SAE Paper 942052 1994
- Whitelaw, J. H. Xu, H. M. “Cyclic Variations in a Lean-Burn Spark-Ignition Engine without and with Swirl” SAE Paper 950683 1995
- Zur Loye, A. O. Bracco, F. V. “Two-Dimensional Visualisation of Premixed Charge Structure in an IC Engine” SAE Paper 870454 1987
- Baritaud, T. A. Green, R. M. “A 2-D Flame Visualisation Technique Applied to the IC Engine” SAE Paper 860025 1986
- Mantzaras, J. Felton, P. G. Bracco, F. V. “Three-Dimensional Visualisation of Premixed-Charge Engine Flames: Islands of Reactants and Products; Fractal Dimensions and Homogeneity” SAE Paper 881635 1988
- Hicks, R. A. Lawes, M. Sheppard, C. G. W. Whitaker, B. J. “Multiple Laser Sheet Imaging Investigation of Turbulent Flame Structure in a Spark-Ignition Engine” SAE Paper 941992 1994
- Ziegler, G. F. W. Zettlitz, A. Meinhardt, P. Herweg, R. Maly, R. Pfister, W. “Cycle-Resolved Two-Dimensional Flame Visualisation in a Spark-Ignition Engine” SAE Paper 881634 1988
- Halldin, C. “Velocity and Turbulence Measurements Close to a Spark Plug” SAE Paper 920154 1992
- Ballal, D. R. Lefebvre, A. H. “The Influence of Spark Discharge Characteristics on Minimum Ignition Energy in Flowing Gases” Combustion and Flame 24 99 108 1975
- Ziegler, G. F. W. Schaudt, R. A. Herweg, R. “The Influence of Spark-Plug orientation on Flame Kernel Formation in Flowing Mixtures” Proceedings of XXI FISITA 1.225 1.232 Belgrade 1986
- Arcoumanis, C. Bae, C. S. “Visualisation of Flow/Flame Interaction in a Constant-Volume Combustion Chamber” SAE Paper 930868 1993
- Douaud, A. De Soete, G. C. Henault, C. “Experimental Analysis of the Initiation and Development of Part-Load Combustion in Spark-Ignition Engines” SAE Paper 830338 1983
- Anderson, R. W. Arsik, J. R. “Ignitability Experiments in a Fast-Burn, Lean-Burn Engine” SAE Paper 830477 1983
- Mantel, T. “Three-Dimensional Study of Flame Kernel Formation around a Spark Plug” SAE Paper 920587 1992
- Amsden, A. A. Butler, T. D. O'Rourke, P. J. Ramshaw, J.D. “KIVA, a Comprehensive Model for 2-D and 3-D Engine Simulation” SAE 850554 1985
- Ishii, K. Sasaki, T. Urata, Y. Yoshida, K. Ohno, T. “Investigation of Cyclic Variation of IMEP Under Lean-Burn Operation in a Spark-Ignition Engine” SAE Paper 972830 1997
- Nakai, H. Ichi, S. Ikeda, Y. Nakajima, T. “Flame Propagation Variation Due to Insufficient HC Concentration” SAE Paper 982565 1998
- Brunt, M. F. Emtage, A. L. “Evaluation of Burn Rate Routines and Analysis Errors” SAE Paper 970037 1997
- Sasaki, T. Yoshida, K. Urata, Y. Ohno, T. Ishii, K. “Introduction of Optically Access Engine to Investigate in Cylinder Phenomena” Honda R & D Technical Review 10 78 89 1998
- Horie, K. Nishizawa, K. Ogawa, T. Akazaki, S. Miura, K. “The Development of a High Performance Four-Valve Lean-Burn Engine” SAE Paper 920455 1992
- Hardalupas, Y. Taylor, A. M. K. P. Whitelaw, J. H. Ishii, K. Miyano, H. Urata, Y. “Influence of Injection Timing on In-Cylinder Fuel Distribution in a Honda VTEC-E Engine” SAE Paper 950507 1995
- Bowditch, F. W. “A New Tool for Combustion Research - A Quartz Piston Engine” Paper No. 150B, SAE Transactions 69 17 1961
- Carabateas, N. E. Taylor, A. M. K. P. Whitelaw, J. H. Ishii, K. Yoshida, K. Matsuki, M. “The Effect of Injector and Intake Port Design on In-Cylinder Fuel Droplet Distribution, Airflow and Lean Burn Performance for a Honda VTEC-E Engine” SAE Paper 961923 1996
- Hood, S. “The V-Grooved Electrode Spark Plug” SAE Paper 901535 1990
- Bauer, H. “Automotive Handbook” 4th Robert Bosch GmbH Stutgart 1996
- Bauer, H. “Automotive Electric/Electronic Systems” 2nd Robert Bosch GmbH Stutgart 1995
- Yamada, T. Hayakawa, N. Kami, Y. Kawai, T. “Universal Air-Fuel Ratio Heated Exhaust Gas Oxygen Sensor and Further Applications” SAE Paper 920234 1992
- Stein, R. A. Mencik, D. Z. Warren, C. C. “Effect of Thermal Strain on Measurement of Cylinder Pressure” SAE Paper 870455 1987
- Brown, W. L. “Methods for Evaluating Requirements and Errors in Cylinder Pressure Measurement” SAE Paper 670008 1967
- Lancaster, D. R. Krieger, R. B. Lienesch, J. H. “Measurement and Analysis of Engine Pressure Data” SAE Paper 750026 1975
- Randolph, A. L. “Methods of Processing Cylinder-Pressure Transducer Signals to Maximise Data Accuracy” SAE Paper 900170 1990
- Kuratle, R. H. Märki, B. “Influencing Parameters and Error Sources During Indication on Internal Combustion Engines” SAE Paper 920233 1992
- Brunt, M. F. Pond, C. R. “Evaluation of Techniques for Absolute Cylinder Pressure Correction” SAE Paper 970036 1997
- Brunt, M. F. Emtage, A. L. “Evaluation of IMEP Routines and Analysis Errors” SAE Paper 960609 1996
- Heywood, J. B. “Internal Combustion Engines Fundamentals” McGraw-Hill New York 1988
- Stone, C. R. Brown, A. G. Bekwith, P. “A Turbulent Combustion Model Used to Give Insight into Cycle-by-Cycle Variation in Spark-Ignition Engine Combustion” IMechE Conference on Combustion in Engines 1992
- Brown, A. G. Stone, C. R. Beckwith, P. “Cycle-by-Cycle Variations in Spark-Ignition Engine Combustion - Part I: Flame Speed and Combustion Measurements and a Simplified Turbulent Combustion Model” SAE Paper 960612 1996
- Lavoie, G. A. Heywood, J. B. Keck, J. C. “Experimental and Theoretical Study of Nitric Oxide Formation in Internal Combustion Engines” Combustion Science and Technology 1 313 326 1970
- Blizard, N. C. Keck, J. C. “Experimental and Theoretical Investigation of Turbulent Burning Model for Internal Combustion Engines” SAE Paper 740191 1974
- Woschni, G. “A Universally Applicable Equation for the Instantaneous Heat Transfer Coefficient in the Internal Combustion Engine” SAE Paper 670931 1967
- Swett, C. C. “Spark Ignition of Flowing Gases Using Long-Duration Discharges” 6 th Symposium (International) on Combustion 1957
- Lim, M. T. Anderson, R. W. Arpaci, V. S. “Prediction of Spark Kernel Development in Constant Volume Combustion” Combustion and Flame 69 303 316 1987
- Ko, Y. Anderson, R. W. Arpaci, V. S. “Spark Ignition of Propane-Air Mixtures near the Minimum Ignition Energy: Part I. An Experimental Study” Combustion and Flame 83 75 87 1991
- Cobine, J. D. “Gaseous Conductors” Dover New York 1958
- Witze, P. O. Hall, M. J. Bennett, M. J. “Are Gas Velocities in a Motored Piston Engine Representative of the Pre-Ignition Fluid Motion in a Fired Engine?” Experiments in Fluids 8 103 107 1989
- Martin, J. K. Plee, S. L. Remboski, D. J. Jr., “Burn Modes and Prior-Cycle Effects on Cyclic Variations in Lean-Burn Spark-Ignition Engine Combustion” SAE Paper 880201 1988
- Fraser, R. A. Bracco, F. V. “Cycle-Resolved LDV Integral Length Scale Measurements Investigating Clearance Height Scaling, Isotropy and Homogeneity in an IC Engine” SAE Paper 890615 1989
- Bradley, D. Sheppard, C. G. W. “Limitations to Turbulence-Enhanced Burning Rates in Lean-Burn Engines” C46/88 IMechE 1988
- Barr, P. K. Witze, P. O. “Some Limitations to the Spherical Flame Assumption Used in Phenomenological Engine Models” SAE Paper 880129 1988
- Beretta, G. P. Rashidi, M. Keck, J. C. “Turbulent Flame Propagation and Combustion in Spark-Ignition Engines” Combustion and Flame 52 217 245 1983
- Bianco, Y. Cheng, W. K. Heywood, J. B. “The Effects of Initial Flame Kernel Conditions on Flame Development in SI Engine” SAE Paper 912402 1991
- Lord, D. L. Anderson, R. W. Brehob, D. D. Kim, Y. “The Effects of Charge Motion on Early Flame Kernel Development” SAE Paper 930463 1993
- Hill, P. G. Kapil, A. “The Relationship between Cyclic Variations in Spark-Ignition Engines and the Small Structure of Turbulence” Combustion and Flame 78 237 247 1989