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Ignition Enhancement in a Two-Stroke Spark-Ignition Engine
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English
Abstract
Conventional two-stroke spark-ignition (SI) engines have difficulty meeting the ignition requirements of lean fuel-air mixtures and high compression ratios, due to their breaker-operated, magneto-coil ignition systems. In the present work, a breakerless, high-energy electronic ignition system was developed and tested with and without a platinum-tipped-electrode spark plug. The high-energy ignition system showed an improved lean-burn capability at high compression ratios relative to the conventional ignition system. At a high compression ratio of 9:1 with lean fuel-air mixtures, the maximum percentage improvement in the brake thermal efficiency was about 16.5% at 2.7 kW and 3000 rpm. Cylinder peak pressures were higher, ignition delay was lower, and combustion duration was shorter at both normal and high compression ratios. Combustion stability as measured by the coefficient of variation in peak cylinder pressure was also considerably improved with the high-energy ignition system.
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Manivannan, P., Poola, R., Ramesh, A., and Dhinagar, S., "Ignition Enhancement in a Two-Stroke Spark-Ignition Engine," SAE Technical Paper 951780, 1995, https://doi.org/10.4271/951780.Also In
References
- Bolt, J.A. Harrington D.L. “Effects of Mixture Motion Upon the Lean Limit and Combustion of Spark-Ignited Mixtures,” SAE Paper 670467 1967
- “Lean-Burn Ignition Systems,” Automotive Engineering 97 2 141 145 1989
- Anderson, R.W. Asik J.R. “Lean Air-Fuel Ignition System Comparison in a Fast-Burn Engine,” SAE Paper 850076 1985
- Anderson, R.W. Asik J.R. “Ignitability Experiments in a Fast-Burn, Lean-Burn Engine,” SAE Paper 830477 1983
- Narihiko, N. Toyokazes B. Yoshiaki S. “Multi-Point Spark Ignition for Lean Combustion,” SAE Paper 852091 1985
- Rado, W.G. Amey J.E. Bates B. Turner A.H. “The Performance of a Multi-Gap Spark Plug Designed for Automotive Applications,” SAE Paper 760264 1976
- Durbin, E.J. Tsai K.C. “Extending the Lean Limit Operation of an SI Engine with a Multiple-Electrode Spark Plug,” SAE Paper 830476 1983
- Norihiko, N. Tatsuo K. Masanori H. Takagi N. “A New Platinum-Tipped Spark Plug Extends the Lean Misfire Limit and Useful Life,” SAE Paper 830480 1983
- Kupe, J. Wilhelmi H. Adams W. “Operational Characteristics of a Lean-Burn SI Engine: Comparison Between Plasma Jet and Conventional Ignition System SAE Paper 870608 1987
- Martin, J.K. Plee S.L. Remboski D.J. “Burn Modes and Prior-Cycle Effects on Cyclic Variations in a Lean-Burn Spark-Ignition Engine Combustion,” SAE Paper 880201 1988
- Young, M.B. “Cyclic Dispersion in the Homogeneous Charge Spark-Ignition Engine-A Literature Survey,” SAE Paper 810020 1981
- Patterson, D.J. “Cylinder Pressure Variations, A Fundamental Combustion Problem,” SAE Paper 660129 1966
- Amann, C.A. “Cylinder Pressure Measurement and Its Use in Engine Research,” SAE Paper 852067 1985
- Wakisaka, T. Hamamoto Y. Ohigashi S. Nabari T. Hasoi M. “Limits of Flame Propagation in Two-Stroke Cycle Gasoline Engine,” Bulletin of the JSME 19 136 1204 1211 1976
- Quader, A.A. “What Limits Lean Operation in Spark-Ignition Engines-Flame Initiation or Propagation?,” SAE Paper 760760 1976
- Soltau, J.P. “Cylinder Pressure Variations in Petrol Engines,” Proceedings of the I. Mech. E. 2 99 117 1960-61