This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Effects of Engine Variables on Turbulence in a Spark-Ignition Engine
Annotation ability available
Sector:
Language:
English
Abstract
Measurements of turbulence within the cylinder of a motored CFR engine were taken with a hot-wire anemometer. Tests were conducted over a range of engine speeds, volumetric efficiencies, and compression ratios with both shrouded and nonshrouded intake valves. Data were processed digitally using both ensemble- and time-averaging techniques. Mean velocities, turbulent intensities, and turbulent micro and integral scales were computed. A nonstationary time-averaged analysis was found to give consistent and physically reasonable results. The turbulence which exists near TDC of compression was found to be isotropic, with both its intensity and scale determined by the intake process.
Recommended Content
Authors
Citation
Lancaster, D., "Effects of Engine Variables on Turbulence in a Spark-Ignition Engine," SAE Technical Paper 760159, 1976, https://doi.org/10.4271/760159.Also In
References
- Taylor, G. I. “The Spectrum of Turbulence,” Proc. Roy. Soc. of London, A 164 476 490 1938
- Hinze, J. O. Turbulence McGraw-Hill New York 1959
- Taylor, G. I. “Statistical Theory of Turbulence,” Proc. Roy. Soc. of London, A 151 421 428 1935
- Willis, D. A. Meyer, W. E. Birnie, C., Jr. “Mapping of Airflow Patterns in Engines with Induction Swirl,” SAE Paper No. 660093 1966
- Huebner, K. H. McDonald, A. T. “Experimental Determination of Airflow Patterns in Piston Engines with Induction Swirl,” SAE Paper No. 720026 1972
- Horvatin, M. Hussman, A. W. “Measurements of Air Movements in Internal Combustion Engine Cylinders,” DISA Information 8 July 1969
- Hassan, H. Dent, J. C. “The Measurement of Air Velocity in a Motored Internal Combustion Engine Using a Hot-Wire Anemometer,” Proceedings Inst. Mech. Eng. 185 50 75 1971
- Tindal, M. J. Williams, T. J. El Khafaji, A. H. A. “Gas Flow Measurements in Engine Cylinders,” SAE Paper No. 740719 1974
- El Khafaji, A. H. A. Tindal, M. J. Williams, T. J. “Measurements of Induction Gas Velocities in Reciprocating Engine Cylinder,” SAE Transactions 81 Paper No. 720115 1972
- Winsor, R. E. “Relationship of Cyclic Combustion Variations and Mixture Motion in a Spark-Ignition Engine,” U. of Mich. 1972
- Dent, J. C. Derham, J. A. “Air Motion in a Four-Stroke Direct Injection Diesel Engine,” Proceedings Inst. Mech. Eng. 188 21 74 1974
- Ikegami, M. Mitshuda, T. Kawatei, K. Fujikawa, T. “Air Motion and Combustion in Direct Injection Diesel Engines,” JARI Tech Memo No. 2 231 246 1971
- Ohigashi, S. Hamoto, Y. Tanabe, S. “Technique of Measuring Gas Stream Velocity by Means of Electric Discharge,” Bulletin of the JSME 11 48 1169 1968
- Ohigashi, S. Hamamoto, Y. Tanabe, S. “Swirl--Its Measurement and Effect on Combustion in a Diesel Engine,” Inst. Mech. Eng. Symposium on Air Pollution Control in Transport Engines November 9-11 1971
- Ohigashi, S. Hamamoto, Y. Tanabe, S. de Saram, J. “Gas Flow Velocity and Combustion Inside Cylinder of Internal Combustion Engine,” JARI Tech Memo No. 2 173 190 September 1971
- Semenov, E. S. “Studies of Turbulent Gas Flow in Piston Engines,” 1958
- Winsor, R. E. Patterson, D. J. “Mixture Turbulence, A Key to Cyclic Variation SAE Paper No. 730086 1973
- Witze, P. O. “Hot-Wire Turbulence Measurements in a Motored Internal Combustion Engine,” Second European Combustion Symposium September 5 1975
- Dent, J. C. Salama, N. S. “The Measurement of Turbulence Characteristics in an Internal Combustion Engine Cylinder,” SAE Paper No. 750886 1975
- Davies, P. O. A. L. Fisher, M. J. “Heat Transfer from Electrically Heated Cylinders,” Proc. R. Soc., A 280 486 1964
- Fisher, R. V. Macey, J. P. “Digital Data Acquisition with Emphasis on Measuring Pressure Synchronously with Crankangle,” SAE Paper No. 750028 1975
- Lancaster, D. R. Krieger, R. B. Lienesch, J. H. “Measurement and Analysis of Engine Pressure Data,” SAE Paper No. 750026 1975
- Vines, R. F. The Platinum Metals and Their Alloys International Nickel Company, Inc. New York 1941
- Lancaster, D. R. “The Effects of Mixture Turbulence on Spark- Ignition Engine Combustion,” U. of Ill. 1975
- Bendat, J. S. Piersol, A. G. Measurement and Analysis of Random Data John Wiley New York 1967
- Patterson, D. J. “Cylinder Pressure Variations, A Fundamental Combustion Problem,” SAE Paper No. 660129 1966
- Tabaczynski, R. J. Heywood, J. B. Keck, J. C. “Time-Resolved Measurements of Hydrocarbon Mass Flow Rate in the Exhaust of a Spark-Ignition Engine,” SAE Paper No. 720112 1972
- Hughes, M. D. Gerrard, J. H. “The Stability of Unsteady Axisymmetric Incompressible Flow Close to a Piston. Part 2. Experimental Investigation and Comparison with Computation,” J. Fluid Mech. 50 645 655 1971
- Kolmogorov, A. N. Compt. rend. acad. sci. URSS 30 301 1941
- Tennekes, H. “Eulerian and Lagrangian Time Microscales in Isotropic Turbulence,” J. Fluid Mech. 67 561 567 1975
- Tsuge, M. Hiroyuki, K. Katsutoshi, K. Yutata, N. “Decay of Turbulence in a Closed Vessel,” Bulletin of the JSME 17 107 May 1974
- Lancaster, D. R. Krieger, R. B. Sorenson, S. C. Hull, W. L. “Effects of Turbulence on Spark-Ignition Engine Combustion,” SAE Congress Detroit February 23 1976
- Collis, D. C. Williams, N. J. “Two Dimensional Convection from Heated Wires at Low Reynolds Numbers,” J. Fluid Mech. 6 357 1959