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Multicomponent Liquid and Vapor Fuel Distribution Measurements in the Cylinder of a Port-Injected, Spark-Ignition Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 06, 2000 by SAE International in United States
Annotation ability available
Event: SAE 2000 World Congress
A 2.5L, V-6, port-injected, spark-ignition engine was modified for optical access by separating the head from the block and installing a Bowditch extended piston with a fused-silica top and a fused-silica liner in one of the cylinders. Two heads were employed in the study. One produced swirl and permitted modulation of the swirl level, and another produced a tumbling flow in the cylinder. Planar laser-induced exciplex fluorescence, which allows the simultaneous, but separate, imaging of liquid and vapor fuel, was extended to capture components of different volatilities in a model fuel designed to simulate the distillation curve of a typical gasoline. The exciplex fluorescence technique was calibrated in a separate cell where careful control of mixture composition, temperature and pressure was possible.
The results show that large-scale motion induced during intake is critical for good mixing during the intake and compression strokes. High intake port velocity is important for initial droplet atomization, but does not guarantee complete mixing. Liquid wall impingement can lead to significant non-uniformity in fuel distribution near the end of the compression stroke, with high potential for producing increased hydrocarbon emissions. Finally, accurate representation of both liquid and vapor phases of the fuel and both the light and heavy components of the fuel is needed for drawing accurate conclusions from fuel distribution data.
- J. P. Styron - University of Illinois at Urbana-Champaign
- P. L. Kelly-Zion - University of Illinois at Urbana-Champaign
- C. F. Lee - University of Illinois at Urbana-Champaign
- J. E. Peters - University of Illinois at Urbana-Champaign
- R. A. White - University of Illinois at Urbana-Champaign
- R. P. Lucht - Texas A&M University
CitationStyron, J., Kelly-Zion, P., Lee, C., Peters, J. et al., "Multicomponent Liquid and Vapor Fuel Distribution Measurements in the Cylinder of a Port-Injected, Spark-Ignition Engine," SAE Technical Paper 2000-01-0243, 2000, https://doi.org/10.4271/2000-01-0243.
Combustion, Flow Diagnostics, and In-Cylinder Velocity Measurement
Number: SP-1529 ; Published: 2000-03-06
Number: SP-1529 ; Published: 2000-03-06
- Hadded, O., Stokes J., and Grigg D. W., Low emission vehicle technology for ultra low emissions vehicle and european stage 3 emissions standards. Journal of Automobile Engineering, 1995. 209(D3).
- Takeda, K., et al., Mixture preparation and HC emissions of a 4-valve engine during cold starting and warm-up. SAE, 1995 (950074).
- Alkidas, A. C. and Drews R. J., Effects of mixture preparation on HC emissions of an S.I. engine operating under steady-state cold conditions. SAE, 1996 (961958).
- Swindal, J.C., et al., In-cylinder charge homogeneity during cold-start studied with fluorescent tracers simulating different fuel distillation temperatures. SAE, 1995 (950106).
- Itoh, T., et al., Development of a new compound fuel and fluorescent tracer combination for use with laser induced fluorescence. SAE, 1995 (952465).
- Melton, L. A., Spectrally separated fluorescence emissions for Diesel fuel droplets and vapor. Applied Optics, 1983. 22: p. 2224.
- Melton, L. A. and Verdieck J. F., Vapor/Liquid visualization for fuel sprays. Combustion Science and Technology, 1984. 42: p. 217.
- Melton, L. A. and Verdieck J. F.. Vapor/Liquid visualization in fuel sprays. in 20th Symposium (International) on Combustion. 1984: The Combustion Institute.
- Melton, L. A., Fluorescent additives for the determination of condensed and vapor phases in multiphase systems, 1985, United Technologies Corporation, USA.
- Melton, L. A., Murray A. M., and Verdieck J. F.. Laser fluorescence measurements for fuel sprays. in SPIE; Remote Sensing. 1986. United Technologies Research Center; East Hartford, CT: SPIE.
- Melton, L. A., Quantitative use of exciplex-based vapor/liquid visualization systems (a users manual), . 1988, University of Texas at Dallas: Richardson, TX.
- Melton, L. A., Exciplex-based vapor/liquid visualization systems appropriate for automotive gasolines (a users manual), . 1993, University of Texas at Dallas: Richardson, TX.
- Melton, L. A., Exciplex-based vapor/liquid visualization systems appropriate for automotive gasolines. Applied Spectroscopy, 1993. 47(6): p. 782-786.
- Curtis, E., Personal Communication, 1997.
- Kelly-Zion, P. L., Fuel preparation in the cylinder of a port injected, spark ignition engine, Ph.D. thesis, Mechanical and Industrial Engineering. 1998, University of Illinois: Urbana, IL.
- Styron, J. P., Multicomponent liquid and vapor fuel distribution measurements in the cylinder of a port-injected, spark-ignition engine, Ph.D. thesis, Mechanical and Industrial Engineering. 1999, University of Illinois: Urbana, IL.
- NeuBer, H. and Geiger J., Continuously Variable Tumble -- A New Concept for Future Lean Burn Engines. SAE, 1996(960607).
- Foster, D.E. and Witze P.O., Two-Component Laser Velocimeter Measurements in a Spark Ignition Engine. Combustion Science and Technology, 1988. 59: p. 85-105.
- Kelly-Zion, P.L., et al., In-Cylinder measurements of liquid fuel during the intake stroke of a port-injected spark ignition engine. SAE, 1997(972945).