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Cycle by Cycle Variations of Flame Propagation in a Spark Ignition Engine
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English
Abstract
Results from theoretical and experimental studies of cycle-by-cycle variations of flame propagation periods during the combustion in spark ignition engine are reported herein. Theoretical considerations show that cyclic variations depend on mixture turbulence and homogeneity characteristics. During an experimental work two ionization probes have been used to define the flame formation and total propagation periods and to enable visual observation of flame propagation duration in a series of successive engine cycles. The effects of main factors (turbulence level, compression ratio and mixture homogeneity) affecting flame kernel formation and flame propagation cyclic variations are discussed in the paper.
One of the main conclusions is that a high turbulence reduces variations of developed flame propagation period, but an improved mixture quality could be important for the flame initiation. Both factors decrease total cyclic variations, though the effect of turbulence is greater.
Citation
Petrovic, S., "Cycle by Cycle Variations of Flame Propagation in a Spark Ignition Engine," SAE Technical Paper 820091, 1982, https://doi.org/10.4271/820091.Also In
References
- Eberan-Eberhorst, R. Gruden D. Schwarzbauer, G. “Statistiche Analyse der Schwankungen von Arbeitszyklen im Ottomotor” Automobil Industrie 4 18 1973
- Arrigoni, V. Calvi, F. Corneti G. Gaetani, B. “Dispersione ciclica nei motori a combustione interna” Ri-vista dei Combustibili XXVI 1972
- Patterson, D.J. “Cylinder Pressure Variations - a Fundamental Combustion Problem” SAE Paper 660129 1966
- Miiler, H. Bertling H. Haahtela, O. “Die Entflammungsdauer und ihre Auswirklung auf den Verlauf der Energieunsetzung beim Ottomotor” MTZ, 39 Jahr. 7/8 1978
- Barton, R.K. Lestz S. S. Meyer, W. E. “An Empirical Model for Core-lation Cycle-by-cycle Cylinder Gas Motion and Combustion Variations of an SI Engine” SAE Paper 710163 1971
- Winsor R.E. Patterson, D.J. “Mixture Turbulence - a Key to Cyclic Combustion Variations” SAE Paper 730086 1973
- Lestz S.S. Meyer, W.E. “Toward Ultra Lean Operation” XVI Congress FISITA Tokio 1976
- Curry, S. A Three Dimensional Study of Flame Propagation in a SI Engine SAE Transactions 71 1963
- Peškin, M.A. “Isledovanie vli-janija nekotorih faktorov na granici obednenija smesi v cilindre dvigatela” (The Effect of different Variables on Lean Mixture Limit In an Engine Cylinder) Academy of Sciences USSR Moscow 1956
- Matsuoka, S. Yamaguchi T. Umemura, Y. “Factors Influencing the Cyclic Variation of Combustion in SI Engine” SAE Paper 710647 1971
- Petrovic. S. “Prostiranje pla-mena i mogućnost rada oto motora sa homogenom siromašnom smešom” (Flame Propagation and the Possibility of SI Engine Operation with Lean Homogeneous Mixture), Ph.D. Thesis, Fac. of Mech. Eng. University of Belgrade 1979
- Tabaczynski, R.J. Ferguson G.R. Radhakrishnan, K. “A Turbulent En-trainment Model for SI Engine Combustion” SAE Paper 770647 1977
- Schelkin, K.I. “On Combustion in Turbulent Flow” NACA TM 1110 1940
- Lancaster, D.R. “Effects of Engine Variables on Turbulence in a Spark Ignition Engine” SAE Paper 760159 1976
- Halstead, M.P. Pye D.B. Quinn, C. P. “Laminar Burning Velocities and Weak Flammabillty Limits under Engine -Like Conditions” Combustion and Flame 22 1974
- Petrović, S. “An Investigation of Flame Propagation in a SI Engine” Proceedings ISATA 81 Stockholm 1981
- Harrow, G.A. “Some Application of Basic Combustion Research to Gasoline Engine Development Problems” SAE Paper 680765 1968
- Morozov, K.A. Matjuhin L.M. Ivanin, M.B. “ Metodika i nekotorie re-zultati isledovania strukturi smesi v uslovjah pulsirujušego potoka” (Method and Results of the Mixture Structure Investigation in Unsteady Flow Conditions), Proceedings MADI, Motor Vehicles and IC Engines 40 Moscow 1972