This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Observations on the Effects of Intake-Generated Swirl and Tumble on Combustion Duration
Annotation ability available
Sector:
Language:
English
Abstract
Intake-generated flow fields and subsequent combustion characteristics were studied respectively in a reciprocating piston water analog flow apparatus and in firing engines. Three 1.6L, I4, 4-valve engine cylinder heads were tested with and without one intake port blocked to generate six distinctly different inducted flow fields. Fluid velocity distributions and flow field structure (“zero mean motion”, “swirl”, and “tumble”) were determined at BDC of the induction stroke using 2-D or 3-D particle tracking velocimetry. Swirl ratios based on steady-flow data were also obtained. The burn duration for each case was determined from cylinder pressure data.
The results show that burn duration decreased with increases in tumble or swirl strength. Previously observed correlations between burn duration and swirl hold if swirl is the major component of the large-scale motion. Further, the correlation between burn duration and swirl is better when based on swirl ratios measured in the reciprocating water analog rig rather than with a steady-flow angular momentum flux meter. In addition, notable three-dimensional characteristics can be observed in BDC flow fields. For example, one of the flow fields exhibited “tipped swirl” with its axis of rotation at a 30° angle to the cylinder axis.
Recommended Content
Authors
- J. C. Kent - Research Staff Ford Motor Company Dearborn, Ml
- A. Mikulec - Research Staff Ford Motor Company Dearborn, Ml
- L. Rimal - Research Staff Ford Motor Company Dearborn, Ml
- A.A. Adamczyk - Research Staff Ford Motor Company Dearborn, Ml
- S. R. Mueller - Research Staff Ford Motor Company Dearborn, Ml
- R.A Stein - Engineering and Manufacturing Staff Ford Motor Company Dearborn, MI
- C. C. Warren - Engineering and Manufacturing Staff Ford Motor Company Dearborn, MI
Topic
Citation
Kent, J., Mikulec, A., Rimal, L., Adamczyk, A. et al., "Observations on the Effects of Intake-Generated Swirl and Tumble on Combustion Duration," SAE Technical Paper 892096, 1989, https://doi.org/10.4271/892096.Also In
References
- Alcock J. F. “Air Swirl in Oil Engines,” Proc. Instn. Mech. Engrs 128 123 193 1934
- 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 1972
- 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
- Davis G. C. Kent J. C. “Comparisons of Model Calculations and Experimental Measurements of the Bulk Cylinder Flow Processes in a Motored PROCO Engine,” SAE Paper No. 790290 1979
- Nagayama I. Araki Y. Iioka Y. “Effects of Swirl and Squish on S.I. Engine Combustion,” SAE Paper No. 770217 1977
- Inoue T. Nakanishi H. Iguchi S. “The Role of Swirl and Squish in Combustion of the SI Engine,” VDI-Berichte 370 181 1980
- Witze P. O. “The Effect of Spark Location in Combustion in a Variable-Swirl Engine,” SAE Paper No. 820044 1982
- Davis G. C. Mikulec A. Kent J. C Tabaczynski R. J. “Modeling the Effect of Swirl on Turbulence Intensity and Burn Rate in S.I. Engines and Comparison with Experiment,” SAE Paper No. 860325 1986
- Kent J. C. Haghgooie M. Mikulec A. Davis G. C. Tabaczynski R. J. “Effects of Intake Port Design and Valve Lift on In-Cylinder Flow and Burnrate,” SAE Paper No. 872153 1987
- Mikulec A. Kent J. C. Tabaczynski R. J. “The Effect of Swirl on Combustion in a Pancake Chamber Spark Ignition Engine: The Case of Constant Inducted Kinetic Energy,” SAE Paper No. 880200 1988
- Gosman A. D. Tsui Y. Y. Vafidis C. “Flow in a Model Engine with a Shrouded Valve - A Combined Experimental and Computational Study,” SAE Paper No. 850498 1985
- Parsi M. Daneshyar H. “Measurements of the Three-Dimensional Turbulent Flow in the Cylinder of an I.C. Engine,” Instrumentation for Combustion and Flow in Engines, NATO/Advanced Study Institute Vimeiro Portugal September 14-25 1987
- Vafidis C. Vorropoulos G. Whitelaw J. H. “Effects of Intake Port and Combustion Chamber Geometry on In-Cylinder Turbulence in a Motored Reciprocating Engine,” Symposium on Fluid Flow and Heat Transfer in Reciprocating Machinery, ASME Annual Winter Meeting December 1987
- Benjamin S. F. “The Development of the GTL ‘Barrel Swirl’ Combustion System with application to Four-Valve Spark Ignition Engines,” Paper C54/88, Instn. Mech. Engrs. International Conference, Combustion in Engines - Technology and Applications London 10-12 May 1988
- Iguchi S. Kudo S. Furuno S Kashiwagura T. Yausi T. “Study of Mixture Formation and Gas Motion in an Internal Combustion Engine using Laser Sheet 2-D Visualization,” SAE Paper No. 885078
- Kyriakides S. C. Glover A. R. “A Study of the Correlation between In-Cylinder Air Motion and Combustion in Gasoline Engines,” Paper C55/88” Instn. Mech, Engrs. International Conference, Combustion in Engines - Technology and Applications London 10-12 May 1988
- Glover A. R. Hundleby G. E. Hadded O “An Investigation into Turbulence in Engines using Scanning LDA,” SAE Paper No. 880379 1988
- Stein R. A. Mencik D. Z. Warren C. C. “Effect of Thermal Strain on Measurement of Cylinder Pressure,” SAE Paper No. 870455 1987
- Rassweiler G. M. Withrow L. “Motion Pictures of Engine Flames Correlated with Pressure Cards,” SAE Jour. (Transactions) 42 5 185 1938
- Willis D. A. Meyer W. E. Birnie C. Jr. “Mapping of Airflow Patterns in Engines with Induction Swirl,” SAE Paper No. 660093 1966
- Ekchian A. Hoult D. P. “Flow Visualization of the Intake Process of an Internal Combustion Engine,” SAE Paper 790095 1979
- Kent J. C. Mikulec A. “Visualization of Induction-Generated Flow in the Cylinder of a Piston Engine Via Water Analog Simulation,” Flow Visualization IV , Proceedings of the Fourth (International) Symposium on Flow Visualization Paris, France August 26-29 1986 735 740 Hemisphere Publ. Co Washington, D.C. 1987
- Arcoumanis C. Green H. G. Wong K. Y. “Flow Structure Visualization in Reciprocating Engines,” Flow Visualization IV , Proceedings of the Fourth (International) Symposium on Flow Visualization Paris, France August 26-29 1986 705 711 Hemisphere Publ. Co. Washington, D.C. 1987
- Khalighi B. Heubler M. S. “A Transient Water Analog of a Dual-Intake-Valve Engine for Intake Flow Visualization and Full-Field Velocity Measurements,” SAE Paper No. 880519 1988
- Kent J. C. Mikulec A. “Visualization of Low Mach Number Gas Flows using Water Analog Simulation,” Proceedings of ICALEO ‘88, Vol 67 Optical Methods in Flow and Particle Diagnostics, Laser Institute of America 1988
- Adamczyk A. A. Rimai L. “2-D Particle Tracking Velocimetry,” Exp. Fluids 6 373 380 1988
- Mikulec A. Kent J. C. Adamczyk A. A. Rimai L. “Effects of Intake Port Configuration on Induction-Generated Swirl in a Piston Engine: A Water Analog Experiment using Particle Tracking Velocimetry,” 2 nd International Symposium on Fluid Control, Measurement, Mechanics and Visualization Sheffield University England September 5-9 1988
- Mikulec A. Kent J. C. Adamczyk A. A. Rimai L. “Dynamic Measurements of Swirl in Piston Engines using Water Analog Simulation and Quantitative Flow Visualization,” 5 th International Symposium on Flow Visualization Prague, Czechoslovakia August 21-25 1989
- Rimai L. Adamczyk A.A. Mikulec A. Kent J. C. “Quantitative 3D Reconstruction of Flow Fields from Orthogonal views of Particle Tracks: Application to Water Analog of a Piston Engine,” 5 th International Symposium on Flow Visualization Prague, Czechoslovakia August 21-25 1989
- Adamczyk A. A. Rimai L. “Reconstruction of a 3-Dimensional Flow Field from Orthogonal Views of Seed Track Video Images,” Exp. Fluids 6 380 386 1988
- Hirotomi T. Nagayama I Kobayashi S. Yamamasu M. “Study of Induction Swirl in a Spark Ignition Engine,” SAE Paper No. 810496 1981
- Newman C. E. Stein R. A. Warren C. C. Davis G. C. “The Effects of Load Control with Port Throttling at Idle - Measurements and Analyses,” SAE Paper No. 890679 1989