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Comparison of Model Calculations and Experimental Measurements of the Bulk Cylinder Flow Processes in a Motored PROCO Engine
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Abstract
A PROCO Flow Simulation (PFSIM) model has been developed to calculate the angular velocity (swirl) and radial velocity (squish) as a function of crank angle for the four strokes of the motored engine cycle. In addition, the PFSIM model calculates the time dependent cylinder pressure, temperature and mass. The model accepts the following swirl-related parameters as input: dimensionless angular momentum and mass flow coefficients for a specific intake and exhaust system configuration. These parameters determine the intake-generated swirl which is computed from the angular momentum flux entering the cylinder during the induction process. An angular momentum flux swirl meter was used to obtain the required input data for three different intake port configurations, and calculations of the bulk cylinder flow were carried out with PFSIM for each intake port configuration. Experimental measurements of in-cylinder swirl were obtained with the spark discharge/time-of-flight method in a motored PROCO research engine for the same three intake ports. Good agreement was found between measured and calculated swirl velocities. The importance of angular momentum dissipation within the cylinder is indicated by the results of this investigation. In further model calculations, the sensitivity of swirl and squish to changes in piston geometry has been shown.
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Davis, G. and Kent, J., "Comparison of Model Calculations and Experimental Measurements of the Bulk Cylinder Flow Processes in a Motored PROCO Engine," SAE Technical Paper 790290, 1979, https://doi.org/10.4271/790290.Also In
References
- Scussel A. J. Simko A. O. Wade W. R. “The Ford PROCO Engine Update.” SAE Paper No. 680699 August 1978
- Tierney W. T. Mitchell E. Alperstein M. “The Texaco Controlled-Combustion System - A Stratified Charge Engine Concept Review and Current Status.” Paper No. C 1/75, Power Plants and Future Fuels, Instn. Mech. Engrs. 1975
- Meurer J. S. “Present Experience with Stratified Charge Engines with Initial Separation of Mixture Components.” Paper No. C 250/76, Stratified Charge Engines, Instn. Mech. Engrs. 1976
- Lavoie, G. A. Blumberg, P. N. “Measurements of NO Emissions from a Stratified Charge Engine: Comparison of Theory and Experiment,” Combustion Science and Technology 8 25 37 1973
- Blumberg, P. N. “Nitric Oxide Emissions from Stratified Charge Engines: Prediction and Control” Combustion Science and Technology 8 5 24 1973
- Alcock J. F. “Air Swirl in Oil Engines.” Proc. Instn. Mech. Engrs. 128 123 193 1934
- Lee D. W. “A Study of Air Flow in an Engine.” Report No. 653, National Advisory Committee for Aeronautics Twenty-Fifth Annual Report 1939
- Jones P. E. “Induction System Development for High-Performance Direct-Injection Engines.” Proc. Instn. Mech. Engrs. 180 42 52 1965-66
- Watts R. Scott W. M. “Air Motion and Fuel Distribution Requirements in High-Speed Direct Injection Diesel Engines.” Proc. Instn. Mech. Engrs. 184 181 191 1969-70
- Tippelmann G. “A New Method of Investigation of Swirl Ports.” SAE Paper No. 770404 February 1977
- Fitzgeorge D. Allison J. L. “Air Swirl in a Road-Vehicle Diesel Engine.” Proc. Instn. Mech. Engrs. 4 151 177 1962-63
- Pischinger F. “Development Work on a Combustion System for Vehicle Diesel Engines.” Proc. Ninth FISITA Congress 1962
- Gale N. F. Ricardo Consulting Engineers - Private Communication
- Rödig J. Žalud F. “Some Contributions to Experimental Combustion Research.” Paper No. 19, Diesel Engine Combustion, Proc. Instn. Mech. Engrs. 184 203 211 1969-70
- Ma T. H. “Effect of Cylinder Charge Motion on Combustion.” Paper No. C 81/75, Combustion in Engines, Instn. Mech. Engrs. 1975
- Willis D. A. Meyer W. E. Birnie, C. Jr. “Mapping of Airflow Patterns in Engines with Induction Swirl.” SAE Paper No. 660093 January 1966
- Nakajima K. Kajiya S. Nagao F. “An Experimental Investigation of the Air Swirl Motion and Combustion in the Swirl Chamber of Diesel Engines.” Twelfth FISITA Congress 1968
- Urlaub A. MTZ 29 461 463 1968
- Ohigashi S. Hamamoto Y. Tanabe S. “A New Method for Measuring Gas Flow Velocity by Electric Discharge.” SAE Paper No. 690180 January 1969
- Ohigashi S. Hamamoto Y. Tanabe S. “Swirl - Its Measurement and Effect on Combustion in a Diesel Engine.” Paper No. C134/71, Air Pollution Control in Transport Engines, Instn. Mech. Engrs. 1971
- Horvatin M. Hussmann A. W. Twelfth FISITA Congress 1968
- Heubner K. H. McDonald A. T. “Dynamic Model and Measurement Technique for Studying Induction Air Swirl in an Engine Cylinder.” ASME Paper No. 69-WA/DGP-5 November 1969
- Heubner K. H. McDonald A. T. “Experimental Determination of Airflow Patterns in Piston Engines with Induction Swirl.” SAE Paper No. 720026 January 1972
- Weidenmüller M. MTZ 31 137 144 1970
- Kahn I. M. Grigg H. C. “Progress in Diesel Combustion Research.” CIMAC Congress 1971
- Kahn I. M. Wang C. H. T. Langridge B. E. “Effect of Air Swirl on Smoke and Gaseous Emissions from Direct-Injection Diesel Engines.” SAE Paper No. 720102 January 1972
- Arnold M. J. Tyndal M. J. Williams T. J. “Measurement of Induction Gas Velocities in a Reciprocating Engine Cylinder.” SAE Paper No. 720115 January 1972
- Williams T. J. Tindal M. J. “Cylinder Gas Flow and Combustion in Compression Ignition Engines.” Paper No. C84/75, Combustion in Engines, Instn. Mech. Engrs. 1975
- Dent J. C. Derham J. A. “Air Motion in a Four-Stroke Direct Injection Diesel Engine.” Proc. Instn. Mech. Engrs. 188 269 280 1974
- Gale N. F. Discussion of Reference 29, Proc. Instn. Mech. Engrs. 188 D61 62 1974
- Gale N. F. Ball W. F. Written Contribution Regarding Reference 28, Combustion in Engines, Instn. Mech. Engrs. 223 224 1975
- Witze P. O. “Measurements of the Spatial Distribution and Engine Speed Dependence of Turbulent Air Motion in an I.C. Engine.” SAE Paper 770220 February 1977
- Gale N. F. “The Application of an LDV to Steady Flow Rig Tests.” The Air Flow in Diesel Engines Seminar Kings College, London September 1977
- Witze P. O. “Application of Laser Velocimetry to a Motored Internal Combustion Engine.” Third International Workshop on Laser Velocimetry Purdue University July 11-13 1978
- Rask R. B. “Velocity Measurements Inside the Cylinder of a Motored Internal Combustion Engine.” Ibid.
- Hutchinson P. Morse A. Whitelaw J. M. “Velocity Measurements in Motored Engines - Experience and Prognosis.” SAE Paper No. 780061 February 1978
- Gosman A. D. Johns R. J. R. “Development of a Predictive Tool for In-Cylinder Gas Motion in Engines.” SAE Paper No. 780315 February 1978
- Gosman A. D. Johns R. J. R. Tipler W. Watkins A. P. “Computer Simulation of In-Cylinder Flow, Heat Transfer and Combustion: A Progress Report.” 13th CIMAC Conference, Vienna April 1979
- Schlichting H. “Boundary Layer Theory.” McGraw-Hill N.Y. 4th 1960