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Measurements of the Three Components of the velocity in the Intake Ports of an I. C. Engine
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English
Abstract
The three components of the velocity were measured by laser Doppler velocimetry at 35 locations in each of the six intake ports of a single-cylinder I.C. engine motored at 600, 900, and 1200 rpm. The intake ports were designed to impart both swirl and roll to the air. Pressure was also measured at the intake and exhaust. The detailed information is valuable mostly for computations of engine flows and for the assessment of multidimensional models. However the following trends were observed. The intake velocity is affected by resonant pressure waves. The flows in the six ports tend to be similar. The three components of the ensemble-averaged velocity generally have uniform profiles across the port area, whereas the fluctuation intensities are higher at the top of the port. All velocities tend to be higher at the beginning and end of intake. Averaged over the port area and intake time, the ensemble-averaged radial and axial velocity components are about 5 times the mean piston speed, the tangential component is about 10 times, and the fluctuation intensities are between 2 and 3.4 times.
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Citation
Bardsley, M., Gajdeczko, B., Boulouchos, K., Cherhroudi, B. et al., "Measurements of the Three Components of the velocity in the Intake Ports of an I. C. Engine," SAE Technical Paper 890792, 1989, https://doi.org/10.4271/890792.Also In
References
- Liou, T.M. Hall, M. Santavicca, D.A. Bracco, F.V. “LDV Measurements in Valved and Ported Engines” SAE Paper 840375 1984
- Iijima, T. Bracco, F.V. “LDV Measurements in an Engine with Square and Circular Piston Cups” SAE Paper 872073 1987
- Hall, M.J. Bracco, F.V. “Cycle-Resolved Velocity and Turbulence Intensity Measurements in an IC Engine with Combustion” SAE Paper 860320 1986
- Hall, M.J. Bracco, F.V. “Cycle-Resolved Velocity and Turbulence Measurements Near the Cylinder Wall of a Firing IC Engine” SAE Paper 861530 1986
- Hall, M.J. Bracco, F.V. “A Study of Velocities and Turbulence Intensities in Firing and Motored Engines” SAE Paper 870453 1987
- Eraser, R.A. Bracco, F.V. “Cycle-Resolved LDV Integral Length Scale Measurements in an IC Engine” SAE Paper 880381 1988
- Fraser, R.A. Bracco, F.V. “Cycle-Resolved LDV Integral Length Scale Measurements Investigating Clearance Height Scaling, Isotropy and Homogeneity Around TDC in an IC Engine” 1989 SAE Congress and Exposition February 1989
- zur Loye. A.O. Bracco, F.V. “Two-Dimensional Visualization of Premixed-Charge Flame Structure in an IC Engine” SAE Paper 870454 1987
- Mantzaras, J. Felton, P.G. Bracco, F.V. “3-D Visualization of Premixed-Charge Engine Flames: Islands of Reactants and Products; Fractal Dimensions; and Homogeneity” SAE Paper 881635 1988
- Felton, P.G. Mantzaras, J. Bomse, D. Woodin, R. “Initial Two-Dimensional Laser Induced Fluorescence Measurements of OH in an Internal Combustion Engine” SAE Paper 881633 1988
- Bardsley, M.E.A. Felton, P.G. Bracco, F.V. “2-D Visualization of Liquid and Vapor Fuel in an IC Engine” SAE Paper 880521 1988
- Bardsley, M.E.A. Felton, P.G. Bracco, F.V. “2-D Visualization of a Hollow-Cone Spray in a Cup-in Head, Ported, IC Engine” 1989 SAE Congress and Exposition February 1989
- Boulouchos, K. Chehroudi, B. Bracco, F.V. “Preliminary Velocity and Pressure Measurements in the Intake Ports of a Two-Stroke I.C. Engine” ASME 109th Winter Annual Meeting Chicago, IL November 1988
- Durst, F. Melling, A. Whitelaw, J.H. “Principles and Practices of Laser-Doppler Anemometry” Academic Press 1976
- Chehroudi, B. Simpson, R.L. “Scanning LDA and Its Applications in Turbulent Separated Flow” Report SMU-WT-7 Southern Methodist University 1983
- Libu, T.-M. “Laser-Doppler Velocimetry Measurements in Valved and Ported Engines” Princeton University May 1983
- Hall, M.J. “A Study of Velocities and Turbulence Intensities Measured in Firing and Motored Engines” Princeton University 1986