This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Mixture Maldistribution Due to Manifold Films in a Methanol Fuelled S.I. Engine
Annotation ability available
Sector:
Language:
English
Abstract
Geometric maldistribution is recognized as a major impediment to obtaining maximum efficiency from carbureted or single point injected methanol fuelled engines. In this program engine tests have been conducted with the inlet manifold inclined to provide a gravitational influence on the flow of fuel in order to study maldistribution effects due to manifold fuel films. It was found that substantial distribution errors were caused by this slight gravitational influence, which was only a fraction of that which could occur periodically in a maneuvering passenger car. Improved atomization is shown to be superior to heating the inlet air for reducing maldistribution, although the latter vaporized fuel more completely before the inlet ports. Fuel films may evaporate more easily than airborne droplets in the size range produced by many carburetors.
Recommended Content
Authors
Citation
Gardiner, D. and Bardon, M., "Mixture Maldistribution Due to Manifold Films in a Methanol Fuelled S.I. Engine," SAE Technical Paper 860234, 1986, https://doi.org/10.4271/860234.Also In
References
- Most W.J. Longwell, J.P. “Single-Cylinder Engine Evaluation of Methanol-Improved Energy Economy and Reduced NO x ” SAE paper # 750119 1975
- Nichols, R.J. “Further Development of the Methanol-Fueled Escort” SAE paper # 830900 1983
- Bardon, M.F. “Thermodynamic Calculations for Otto Cycle Engines Using Methanol as Fuel” Proceedings of the 2nd Miami International Conference on Alternative Energy Sources 1979
- Bergmann, H.K. “A Highly Efficient Alcohol Vapor Aspirating Spark-Ignition Engine with Heat Recovery,” SAE paper # 821190 1982
- Joyce, R.J. Discussion Session on Engine Adaptation, Proceedings VI International Symposium on Alcohol Fuels Technology 3 1984
- Wiens F.J. McCormack, M.C. Ernst, R.J. Morris R.L. Nichols, R.J. “California’s Alcohol Fleet Test Program-Final Results” Proceedings of the VI International Symposium on Alcohol Fuels Technology 3 1984
- Yu, H. “Fuel Distribution Studies — A New Look at an Old Problem” Trans. SAE, vol 71 (1963) 596 613
- Kay, I.W. “Manifold Fuel Film Effects in an S.I. Engine” SAE paper #7809444 1978
- K.S. Rao, Ganesan V. Gopalakrishnan K.V. Murthy B.S. “Mixture Maldistribution and Aldehyde Emission in an Alcohol Fueled S.I. Engine,” SAE paper # 830511 1983
- Obert, E.F. Internal Combustion Engines and Air Pollution Harper and Row New York 1973
- Lichty, L.C. Combustion Engine Processes McGraw-Hill New York 1967
- Collins, M.H. “A Technique to Characterize Quantitatively the Air/Fuel Mixture in the Inlet Manifold of a Gasoline Engine” SAE paper # 690515 1969
- Skifstad, J.G. “Microscopic Airblast Atomizers” Proceedings of the 2nd International Conference on Liquid Atomization and Spray Systems 1982
- Galvin, K. Kemp R.M. Dryer, F.L. “The Development of Carburettor Systems for the Use of Alcohol in Spark Ignition Engines” Proceedings of the IV International Symposium Alcohol Fuels Technology 1 1980
- “Methods for the Measurement of Fluid Flow in Pipes,” British Standard No. 1042 British Standards Institution London 1964
- Spindt, R.S. “Air-Fuel Ratios from Exhaust Gas Analysis” SAE paper #65057 1965
- Menrad, H. Lee W. Bernhardt, W. “Development of a Pure Methanol Fuel Car” SAE paper # 770790 1977
- Aquino, C.F. “The Design and Development of the Upper-Pivoted Sonic Carburetor” SAE paper # 780078 1978
- Cooper, D.E. Courtney R.L. Hall, C.A. “Radioactive Tracers Cast New Light on Fuel Distribution” Trans. SAE, Vol. 67 (1959) 619 639
- Toyoda, T. Inoue T. Aoki, K. “Single Point Electronic Injection System” SAE paper # 820902 1982
- Bartholomew, E. “Potentialities of Emission Reduction by Design of Induction Systems” SAE paper # 660109 1966
- Aquino, C.F. “The Efect of Local Heating on A/F Ratio Control” SAE paper # 820411 1982
- Tice, P.S. “Good Manifold Design Based on Specific Natures of Flows” Automotive Industries 71 416 1934 585 587
- Trayser, D.A., et al. “A Study of the Influence of Fuel Atomization, Vaporization, and Mixing Processes on Pollutant Emissions from Motor Vehicle Powerplants” Battelle Memorial Institute, Part 1, Report No. PB18586, April 1969
- Matthes, W.R. McGill, R. N. Author’s Closure to Discussion of “Effects of the Degree of Fuel Atomization on Single-Cylinder Engine Performance” SAE Paper # 760117 1976 Automotive Fuel Economy Part 2
- Bailey, A.G. Cetronio, A. “Carburation Enhancement in an Internal Combustion Engine by Electrostatic Atomization of Petrol” J. Phys D: Appl. Phys. 11 1978 L23 L27
- Finlay, I.C. Welsh, N. “Photographic Study of Fuel Atomization and Distribution in Air-Valve Carburetors” Automotive Engineer 1978 30 33
- Servati, H.B. Yuen, W.W. “Deposition of Fuel Droplets in Horizontal Intake Manifolds and the Behavior of Fuel Film Flow on its Walls” SAE paper # 840239 1984
- Green, R.K. “Conversion of Spark Ignition Engines for use on Methanol Fuel” Proceedings of the fifth International Alcohol Fuel Technology Symposium 2 1982
- Joyce, R.J. Walker F.G.B. Winkel, I.R. “Methanol Retrofit Systems: Otto Cycle Engines” Proceedings of the VI International Symposium on Alcohol Fuels Technology 1 1984
- Kanury, A.M. Introduction to Combustion Phenomena , Gordon and Breach Science Publishers 1977