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Two-Dimensional In-Cylinder Flow Field in a Natural Gas Fueled Spark Ignition Engine Probed by Particle Tracking Velocimetry and Its Dependence on Engine Specifications
Technical Paper
1999-01-1534
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An experimental study was made to investigate in-cylinder flow field in a natural gas fueled spark ignition engine and the effects of engine specifications on in-cylinder flow field. The instantaneous two-dimentional flow fields in a single-cylinder visualization engine, which has 75mm bore and 62mm stroke, were measured in various cross sections perpendicular to the cylinder axis by using the laser light sheet PTV method at various crank angles during intake, compression, and expansion strokes over the wide range of piston combustion chamber configuration, top clearance, and nominal swirl ratio. Flow fields during compression and expansion strokes were also calculated using KIVA2 simulation code for better understanding of the measured results. The results showed that induction-generated swirl is getting concentric to the cylinder center in compression stroke, and is shifted in the radial direction in expansion stroke. Swirl velocity increases with the lapse of time, and shows its maximum around 20°BTDC in expansion stroke. Squish velocity, which is approximately 0 at TDC, shows its inward maximum and outward maximum around 20°BTDC and 20°ATDC, respectively. The maximum outward squish velocity in expansion stroke is about twice as large as the maximum inward squish velocity in compression stroke. Turbulence energy increases, after showing its maximum around 20°BTDC in compression stroke. Smaller piston cavity diameter resulted in larger squish velocity, actual swirl ratio, and turbulence energy. Top clearance had little effect on in-cylinder flow field. Higher nominal swirl ratio resulted in larger actual swirl ratio and turbulence energy, while it had little effect on squish velocity.
Authors
Citation
Fukano, Y., Hisaki, H., Kida, S., and Kadota, T., "Two-Dimensional In-Cylinder Flow Field in a Natural Gas Fueled Spark Ignition Engine Probed by Particle Tracking Velocimetry and Its Dependence on Engine Specifications," SAE Technical Paper 1999-01-1534, 1999, https://doi.org/10.4271/1999-01-1534.Also In
References
- Kataoka, K. Hirooka, S. Fukatani, N. Kadota, T. “Fundamental Study on the Combustion Phenomena in a Gas Engine” Proceedings of The 11 th Internal Combustion engine Symposium(Japan) 603 608 1993
- Mizobuchi, T. Kataoka, K. Segawa, D. Kadota, T. Fukatani, N. “Fundamental Study on the Combustion Phenomena in a Natural Gas Engine with a Rapid Compression Chamber” Proceedings of The 12 th Internal Combustion Engine Symposium(Japan) 509 514 1995
- Segawa, D. Kadota, T. Mizobuchi, T. Kataoka K. Fukano, Y. “Effect of Fluid Flow on Combustion Process of Natural Gas in a Rapid Compression Combustor” SAE Paper No. 961937 1990
- Wolff, D. Tamura, M. Tai, H. Sakurai, T. “2-Dimensional Investigations of Mixture Formation inside Gas-Engine Prechambers using LIF of Acetone” Proceedings of the 13th Internal Combustion Engine Symposium(Japan) 429 434 1996
- Kudo, H. Kono, S. Matsuoka, T. “LDV Measurement of In-cylinder Flow Field Including Vertical Vortex” The Journal of JSAE 22 3 19 24 1991
- Moriyoshi, Y. Otani, H. Kamimoto, T. Yagita, M. “Stratification of Swirl Intensity in the Axial Direction for Control of Turbulence Generation During the Compression Stroke” Transactions of JSME 57-537 1831 1836 1991
- Reuss, D. L. Adrian, R. J. Landreth, C. C. French, D. T. Fansler T. D. “Instantaneous Planar Measurements Velocity and Large-Scale Vorticity and Strain Rate in an Engine Using Particle-Image Velocimetry” SAE Paper No. 890616 1989
- Sanbayashi, D. Kuwahara, K. Ando, H. “In-cylinder Flow Field Measurement by Laser Color Sheet Method” Proceedings of JSAE, Paper No.902143 1990
- Sanbayashi, D. Kumagai, H. Kuwahara, K. Ando H. “Analysis of the Distortion Process of Vertical Vortex by Laser Light Sheet” Proceedings of JSME 738 740 1991
- Takemura, J. Murakami, N. Kitada, T. Ando, H. “Mixture Preparation in the Lean-Burn Engine Employing the Concept of Barrel-Stratification” Proceedings of JSME 738 740 1991
- Yokota, H. Sugihara, H. Endo, S. Aoyagi, Y. Otani, T. “An Experimental Study of In-cylinder Air Motions in 4 Valves DI Diesel Engine” Proceedings of the 9th Internal Combustion Engine Symposium(Japan) 261 266 1991