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Kinetic Wall Quenching of Methanol Flames with Applications to Spark Ignition Engines
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Abstract
A computer model was used to predict perpendicular flame quenching distances for methanol-air mixtures at a variety of conditions. A detailed kinetic reaction mechanism has allowed the study of aldehyde formation. Aldehydes were found to increase an order of magnitude over bulk gas concentrations as the flame quenches but this concentration is insufficient to account for measured exhaust aldehydes.
A flow reactor study showed additional aldehydes being formed from the unburned quench layer when it mixes with the hot exhaust gases during the expansion and exhaust strokes. Quenching distance decreases with increasing pressure and increasing wall temperature, and increases with lean and very rich equivalence ratios and increasing exhaust gas recirculation. Water addition shows only a slight increase in quenching distance for up to 30% of the fuel by volume.
Citation
Browning, L. and Pefley, R., "Kinetic Wall Quenching of Methanol Flames with Applications to Spark Ignition Engines," SAE Technical Paper 790676, 1979, https://doi.org/10.4271/790676.Also In
References
- Pefley R.K. Browning L.H. Hornberger M.L. Likos W.E. McCormack M.C. Pullman B. “Characterization and Research Investigations of Methanol and Methyl Fuels,” University of Santa Clara Report No. ME-77-2, 1977
- Bernhardt W.E. “Methanol as an Automobile Fuel--Problems and Expectations,” Methanol as an Alternative Fuel Proceedings Stockholm, Sweden 11 24 1976
- Browning L.H. Pefley R.K. “Computer Predicted Compression Ratio Effects on NO x Emmissions from a Methanol Fueled S.I. Engine,” SAE paper No. 779006 12th IECEC 1977
- Browning L.H. Pefley R.K. “Predicted Methanol-Water Fueled S.I. Engine Performance and Emissions,” International Symposium on Alcohol Fuel Technology Wolfsburg, Germany November 1977
- Kurkov A.P. Mirsky W. “An Analysis of the Mechanism of Flame Extinction by a Cold Wall,” 12th Symposium on Combustion, Combustion Institute 615 624 1969
- Adamczyk A.A. Lavoie G.A. “Laminar Head-On Flame Quenching: A Theoretical Study,” SAE paper No. 730969 Fuels and Lubricants Meeting November 1978
- Ferguson C.R. Keck J.C. “On Laminar Flame Quenching and Its Application to Spark Ignition Engines,” Combustion and Flame 28 197 205 1977
- Ishikawa N. Branch M.C. “A Simple Model of Transient Thermal Flame Quenching,” SAE paper No. 770648 Fuels and Lubricants Meeting June 1977
- Lavoie G.A. “Correlations of Combustion Data for S.I. Engine Calculations--Laminar Flame Speed, Quench Distance and Global Reaction Rates,” SAE paper No. 780229 SAE Congress and Exposition February 1978
- Westbrook C.K. Dryer F.L. “A Comprehensive Mechanism for Methanol Oxidation,” Combustion Science and Technology
- Flower W.L. Hanson R.K. Kruger C.H. “Experimental Study of Nitric Oxide Decomposition by Reaction with Hydrogen,” Combustion Science and Technology 15 115 128 1977
- NACA Report No. 1300 “Basic Considerations in the Combustion of Hydrocarbon Fuels with Air,” Propulsion Chemistry Division, Lewis Flight Center 1957
- Gibbs G.J. Calcote H.F. “Effect of Molecular Structure on Burning Velocity,” Journal of Chemical and Engineering Data 4 3 226 237 July 1959
- Gordon S. McBride B.J. “Computer Program for Calculation of Complex Chemical Equilibrium Compositions, Rocket Performance, Incident and Reflected Shocks and Chapman-Jouguet Detonations,” NASA Report No. SP-273 1971
- Ishikawa N. Branch M.C. “An Experimental Determination of Quenching Distance of Methanol and Iso-octane/Methanol Blends,” Combustion and Flame 27 65 72 1976
- Ellenberger J.M. Bowlus D.A. “Single Wall Quench Distance Measurements,” Central States Section, the Combustion Institute March 1971
- Browning L.H. “A Thermokinetic Combustion Processes Simulation for a Methanol Fueled Spark Ignition Engine,” Stanford University Stanford, California
- Bittker D.A. Scullin V.J. “General Chemical Kinetics Computer Program for Static and Flow Reactions, with Application to Combustion and Shock Tube Kinetics,” NASA report No. TN-D65S6, 1972
- Brinkman N.D. “Effects of Compression Ratio on Exhaust Emissions and Performance of a Methanol-Fueled Single Cylinder Engine,” SAE paper No. 770791 Automobile Engineering and Manufacturing Meeting September 1977
- Heywood J.B. “Pollutant Formation and Control in Spark Ignition Engines,” 15th Symposium on Combustion Combustion Institute 1191 1211 1974