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Autoignition of Methane and Natural Gas in a Simulated Diesel Environment
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1991 by SAE International in United States
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This work presents the autoignition delay time characteristics of methane and natural gas under simulated diesel engine conditions. A constant-volume combustion vessel is used for the experiments. Results are presented for the pressure and temperature ranges of 5 to 55 atm and 600 to 1700 K, respectively. Comparisons are then made with autoignition data for methanol, ethanol, isooctane, and n-cetane. Three major trends are observed. First, there is little effect on the autoignition delay time of natural gas as the vessel pressure is increased from 5 to 55 atm. Second, there is a slight decrease in the autoignition delay time of methane-ethane gas mixtures as the concentration of ethane is increased. Third, the autoignition delay time of natural gas is strongly dependent on temperature and continually decreases with increasing temperature. From a pragmatic point of view, it is shown that the use of methane or natural gas as a compression-ignited diesel fuel is impractical in a conventional diesel engine due to the high temperature of between 1200 to 1300 K needed to reduce the autoignition delay time to practical values (∼ 2 ms).
CitationFraser, R., Siebers, D., and Edwards, C., "Autoignition of Methane and Natural Gas in a Simulated Diesel Environment," SAE Technical Paper 910227, 1991, https://doi.org/10.4271/910227.
- Hall, M.J., “Lean-Burn Gas Engine Ignition Processes,” GRI Annual Report contract No. 5086-260-1458, December 1988.
- Karim, G.A., ‘On the Emission of Carbon Monoxide and Smoke from Compression Ignition Engines; Including Natural Gas Fueled Engines,’ Proceedings of 2nd Int. Clean Air Congress, Academic Press, p. 617, 1970.
- McJones, R.W. and Corbeil, R.J., ‘Natural Gas Fueled Vehicles; Exhaust Emissions and Operational Characteristics,’ SAE Paper No. 700078, 1970.
- Fleming, R.D. and Allsup, J.R., ‘Emission Characteristics of Natural Gas as an Automotive Fuel,’ SAE Paper No. 710833, 1970.
- Nicholls, J.A., Sichel, M., Gabrijel, Z., Oza, R.D., and Vandermolen, R., ‘Detonability of Unconfined Natural Gas-Air Clouds,’ Seventeenth Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, p. 1223, 1978.
- Bull, D.C., Elsworth, J.E., and Hooper, G., ‘Susceptibility of Methane-Ethane Mixtures to Gaseous Detonation in Air,’ Combustion and Flame, v34, p. 327, 1979.
- Vandermolen, R. and Nicholls, J.A., ‘Blast Wave Initiation Energy for the Detonation of Methane-Ethane Mixtures,’ Combustion Science and Technology, v21, p. 75, 1979.
- Eubank, C.S., Rabinowitz, M.J., Gardiner, W.C., Jr., and Zellner, R.E., ‘Shock-Initiated Ignition of Natural Gas-Air Mixtures,’ Eighteenth Symposium (International) on Combustion, The Combustion Institute, Pittsburgh, p. 1767, 1980.
- Lifshitz, A., Scheller, K., Burcat, A., and Skinner, G.B., ‘Shock-Tube Investigation of Ignition in Methane-Oxygen-Argon Mixtures,’ Combustion and Flame, v16, p. 311, 1971.
- Crossley, R.W., Dorko, E.A., Scheller, K., and Burcat, A., ‘The Effect of Higher Alkanes on the Ignition of Methane-Oxygen-Argon Mixtures in Shock Waves,’ Combustion and Flame, v19, p. 373, 1972.
- Eubank, C.S., Gardiner, W.C., Jr., and Simmie, J.M., ‘Acceleration of Methane-Air Ignition by Hydrocarbon Additives,’ first International Specialists Meeting of The Combustion Institute, Bordeaux, France, p. 336, 1981.
- Westbrook, C.K., ‘An Analytical Study of the Shock Tube Ignition of Mixtures of Methane and Ethane,’ Combustion Science and Technology, v20, p. 5-17, 1979.
- Westbrook, C.K. and Pitz, W.J., ‘Effects of Propane on Ignition of Methane-Ethane-Air Mixtures,’ Combustion Science and Technology, v33, p. 315-319, 1983.
- Westbrook, C.K. and Pitz, W.J., ‘High Pressure Autoignition of Natural Gas/Air Mixtures and the Problem of Engine Knock,’ Gas Research Institute Technical Report No. GRI-87/0264, Sept. 1987.
- Siebers, D.L. and Edwards, C.F., ‘Autoignition of Methanol and Ethanol Sprays under Diesel Engine Conditions,’ SAE Transactions, v96, pp. 5.140-5.152, 1987.
- Siebers, D.L., ‘Ignition Delay Characteristics of Alternative Diesel Fuels: Implications on Cetane Number,’ SAE Transactions, v94, Fuels and Lubricants Section, pp. 673-686, 1985.
- Dyer, T.M., ‘Characterization of One- and Two-Dimensional Homogeneous Combustion Phenomena in a Constant Volume Bomb,’ SAE Transactions, v88, pp. 1196-1216, 1979.
- Fraser, R.A., “Autoignition of Methane and Natural Gas in a Simulated Diesel Environment,” GRI Final Report contract No. 5086-260-1458, July 1990.
- Parker, T.E., Forsha, M.D., Stewart, K. Hom., Sawyer, R.F., and Oppenheim, A.K., ‘Induction Period for Ignition of Fuel Sprays at High Temperatures and Pressures,’ SAE Paper No. 850087, 1985.
- Ikegami, M., Miwi, K., and Inada, M., ‘A Study on Ignition and Combustion of a Diesel Spray by Means of a Rapid Compression Machine,’ Bulletin of the JSME, v24, n195, pp. 1608-1615, 1981.