This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A Comparison of Cycle-Resolved and Ensemble-Averaged velocity variations in a Diesel Engine
Annotation ability available
Sector:
Language:
English
Abstract
Laser-Doppler anemometry was used to investigate mean flow and turbulence fields in a direct injection diesel engine, motored at speeds of 1500, 2250 and 3000 rev/min. Both cycle-resolved and ensemble-averaged measurements were made in the upper part of the cylinder during the inlet and compression strokes.
The cycle-resolved measurements in the inlet stroke indicated that the annular jet leaving the valve underwent rapid changes of direction at frequencies which varied from one point to another around the valve circumference. The cycle-resolved and ensemble-averaged measurements in the compression stroke both revealed a precession of the swirl centre around the cylinder axis, at a rate which was faster than the speed of rotation of the crankshaft.
Authors
Citation
Yianneskis, M., Tindal, M., and Suen, K., "A Comparison of Cycle-Resolved and Ensemble-Averaged velocity variations in a Diesel Engine," SAE Technical Paper 890617, 1989, https://doi.org/10.4271/890617.Also In
References
- Suen K.O. Tindal M.J. Yianneskis M. Paul G.R. “The development of swirl in the cylinder of a direct injection diesel research engine” 2nd International Conference on Laser Anemometry - Advances and Applications Glasgow 21-23 September 1987
- Suen K.O. Yianneskis M. “A laser anemometry system for the investigation of in-cylinder flows” Seminar on Experimental Methods in Engine Research and Development I. Mech. E. London 9-10 March 1988
- Tindal M.J. Cheung R.S. Yianneskis M. “Velocity characteristics of steady flows through engine inlet ports and cylinders” SAE Paper 880383 1988
- Tindal M.J. Suen K.O. Yianneskis M. “Variation of flow pattern in a diesel engine cylinder with speed” SAE Paper 890791 1989
- Witze P.O. Martin J.K. “Cyclic-variation bias in spark ignition engine turbulence measurements” 2nd International Symposium on Applications of Laser Anemometry to Fluid Mechanics Lisbon July 1984
- Morse A.P. Whitelaw J.H. Yianneskis M. “The effect of swirl on the flow patterns in motored piston-cylinder assemblies” Journal of Fluids Engineering 102 478 480 1980
- Arcoumanis C. Bicen A.F. Vafidis C. Whitelaw J.H. “Three-dimensional flow field in four-stroke model engines” SAE Paper 841360 1984
- Chan C.K. Annand W.J.D. Turner J.T. “Measurement of velocity levels in a motored model of an internal combustion engine” International Conference on Laser Anemometry - Advances and Applications Manchester 6-18 December 1985
- Rask R.B. “Comparison of window, smoothed-ensemble, and cycle-by-cycle data reduction techniques for laser anemometer measurements of in-cylinder velocity” ASME Symposium on Fluid Mechanics of Combustion Systems Boulder, Colorado June 1981
- Cole J.B. Swords M.D. “An investigation of the ignition process in a lean-burn engine using conditionally sampled laser-Doppler anemometry” SAE Paper 800043 1980
- Martin J.K. Witze P.O. Borgnakke C. “Multiparameter conditionally sampled laser velocimetry measurements during flame propagation in a spark ignition engine” Twentieth Symposium on Combustion Michigan 1984
- Swords M.D. Kalghatgi G.T. Watts A.J. “An experimental study of ignition and flame development in a spark ignition engine” SAE Paper 821220 1982
- Lancaster D.R. “Effects of engine speed variables on turbulence in a spark-ignition engine” SAE Paper 760159 1976
- Witze P.O. “Measurements of the spatial distribution and engine speed dependence of turbulent air motion in an i.e. engine” SAE Paper 770220 1977
- Brandl F. Reverencic I. Cartellieri W. Dent J.C. “Turbulent air flow in the combustion bowl of a D.I. Diesel engine and its effect on engine performance” SAE Paper 790040 1979
- Tindal M.J. Brown P.G. Kyriakides S.C. “An investigation of swirl and turbulence in the cylinders of direct injection diesel engines” Paper C127/82, Conference on Diesel Engines for Passenger Cars and Light Duty Vehicles I. Mech. E. London 1982
- Catania A.E. Mittica A. “Induction system effects on the small scale turbulence in a high-speed diesel engine” Paper 87-ICE-38, ASME Energy Sources Technology Conference Dallas, Texas 15-20 February 1987
- Liou T.M. Santavicca D.A. “Cycle resolved LDV measurements in a motored engine” Engineering Applications of Laser Velocimetry Coleman H.W. Pfund P.A. ASME New York 1982
- Max E. Fernstrom G. “Turbulent engine flow measurements using LDA with correlator” Bois E.O. Schulz-Du Photon Correlation Techniques in Fluid Mechanics Springer-Verlag Berlin 1983
- Hall M.J. Bracco F.V. Santavicca D.A. “Cycle-resolved velocity and turbulence measurements in an IC engine with combustion” SAE Paper 860320 1986
- Fansler T.D. French D.T. “Cycle-resolved laser-velocimetry measurements in a reentrant-bowl-in-piston engine” SAE Paper 880377 1988
- Fraser R.A. Bracco F.V. “Cycle-resolved LDV integral length scale measurements in an I.C. engine” SAE Paper 880381 1988
- Durst F. Melling A. Whitelaw J.H. “Principles and practice of laser-Doppler anemoraetry” Academic Press 1981
- Arcoumanis C. Hadjiapostolou A. Whitelaw J.H. “Swirl precession in engine flows” SAE Paper 870370 1987
- Johns R.J.R. “The effect of piston bowl offset on the compression-induced air motion in direct injection diesel engine combustion chambers” Proc. Int. Symp. on Diagnostics and Modelling of Combustion in Reciprocating Engines Tokyo 4-6 September 1985
- Furuno S. Yamada T. Iguchi S. Miwata Y. “Swirl motion analysis in a spherical combustion chamber” Paper C44/88 Proc. International Conference on Combustion in Engines - Technology and Applications I. Mech. E. London 10-12 May 1988
- Kito O. “Axi-asymmetric character of turbulent swirling flow in a straight circular pipe” Bulletin of JSME 27 683 1984
- Yianneskis M. Popiolek Z. Whitelaw J.H. “Steady and unsteady flow characteristics of stirred reactors” Journal of Fluid Mechanics 175 537 555 1987
- Johnston S.C. Robinson C.W. Rorke W.S. Smith J.R. Witze P.O. “Application of laser diagnostics to an injected engine” SAE Paper 790092 1979
- Fansler T.D. “Laser velocimetry measurements of swirl and squish flows in an engine with a cylindrical piston bowl” SAE Paper 850124 1985
- Shapertons R. Thiele F. “Three-dimensional computations for flowfields in DI piston bowls” SAE Paper 860463 1986
- Suen K.O. “Gas motion in a diesel engine cylinder” University of London 1989