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Study of Flash Boiling Spray Combustion in a Spark Ignition Direct Injection Optical Engine Using Digital Image Processing Diagnostics
Technical Paper
2019-01-0252
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Flash boiling spray has been proven to be a useful method in providing finer fuel droplet and stronger evaporation in favor of creating a homogeneous fuel-air mixture. Combustion characteristics of flash boiling spray are thus valuable to be investigated systematically for aiding the development of efficient internal combustion system. An experimental study of flash boiling spray combustion in a SIDI optical engine under early injection has been conducted. The fuel, Iso-octane, was used across all tests. Three fuel spray conditions experimented in the study: normal liquid, transitional flash boiling and flare flash boiling sprays, within each case that Pa/Ps ratio was set in (>1), (0.3~1), and (<0.3) respectively. A small quartz insert on the piston enables optical access for observing combustion process; non-intrusive measurements on flame radicals has been carried out using a high-speed color camera. With the use of digital image processing and color analysis, the imaging system was turned into an abstract multi-spectral system to determine the characteristics of flame emission. In addition, the near infrared region was capable of being discriminated from the rest regions of the flame using HSV color model. The near infrared flame area and diffusion flame region as well as pool fire were found to be reduced, when implementing flash boiling spray under early injection condition. It is found that flash boiling spray contributes the reduction of particulate number (PN) emissions in exhaust gas and makes the improvement of indicated mean effective pressure (IMEP) and cyclic variation, which lead to more efficient combustion in SIDI engine under early injection.
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Sun, Z., Ma, Z., Li, X., and Xu, M., "Study of Flash Boiling Spray Combustion in a Spark Ignition Direct Injection Optical Engine Using Digital Image Processing Diagnostics," SAE Technical Paper 2019-01-0252, 2019, https://doi.org/10.4271/2019-01-0252.Data Sets - Support Documents
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References
- Zhao, F., Lai, M.C., and Harrington, D.L., “Automotive Spark-Ignited Direct-Injection Gasoline Engines,” Progr. Energy Combust. Sci. 25(5):437-562, 1999, doi:10.1016/S0360-1285(99)00004-0.
- Chapman, E., Davis, R., Studzinski, W., and Geng, P., “Fuel Octane and Volatility Effects on the Stochastic Preignition Behavior of a 2.0L Gasoline Turbocharged DI Engine,” SAE Int. J. Fuels Lubr. 7(2), 2014, doi:10.4271/2014-01-1226.
- Zhu, G.G., Haskara, I., and Winkelman, J., “Closed-Loop Ignition Timing Control for Si Engines Using Ionization Current Feedback,” IEEE Trans. Control Syst. Technol. 15(3):416-427, 2007, doi:10.1109/TCST.2007.894634.
- Zeng, W., Xu, M., Zhang, M., Zhang, Y. et al., “Macroscopic Characteristics for Direct-Injection Multi-Hole Sprays Using Dimensionless Analysis,” Exper. Thermal Fluid Sci. 40(0):81-92, 2012, doi:10.1016/j.expthermflusci. 2012.02.003.
- Zeng, W., Xu, M., Zhang, G., Zhang, Y. et al., “Atomization and Vaporization for Flash-Boiling Multi-Hole Sprays with Alcohol Fuels,” Fuel 95(0):287-297, 2012, doi:10.1016/ j. fuel.2011.08.048.
- Zhang, G., Xu, M., Zhang, Y., Zhang, M. et al., “Macroscopic Characterization of Flash-Boiling Multi-Hole Sprays Using Planar Laser Induced Exciplex Fluorescence Technique. Part I. On-Axis Spray Structure,” Atom. Spray 22(10):861-878, 2012, doi:10.1615/AtomizSpr.2013006760.
- Zhang, G. and Hung, D.L.S., “Temporal Investigations of Transient Fuel Spray Characteristics from a Multi-Hole Injector Using Dimensionless Analysis,” Exper. Thermal Fluid Sci. 66:150-159, 2015, doi:10.1016/j.expthermflusci.2015.03.011.
- Bowditch, F.W., “A New Tool for Combustion Research A Quartz Piston Engine [C],” SAE Technical Paper 610002, 1961, doi:10.4271/610002.
- Chapman, E., Davis, R., Studzinski, W., and Geng, P., “Fuel Octane and Volatility Effects on the Stochastic Preignition Behavior of a 2.0L Gasoline Turbocharged DI Engine,” SAE Int. J. Fuels Lubr. 7(2), 2014, doi:10.4271/2014-01-1226.
- Gaydon, A.G., The Spectroscopy of Flames (London: Chapman & Hall, 1974).
- Gaydon, A.G. and Wolfhard, H.G., Flames-Their Structure, Radiation and Temperature Fourth Edition (London: Chapman & Hall, 1979).
- Barnard, J.A. and Bradley, J.N., Flame and Combustion (New York: Chapman and Hall, 1985).
- Clark, T.P., “Studies of OH, CO, CH and C2 Radiation from Laminar and Turbulent Propane-Air and Ethylene-Air Flames,” NACA Technical Report, 1958.
- Yang, J., Dong, X., Wu, Q. et al., “Influence of Flash Boiling Spray on the Combustion Characteristics of a Spark-Ignition Direct-Injection Optical Engine under Cold Start [J],” Combustion & Flame 188:66-76, 2018.
- Navakas, R., Saliamonas, A., Striūgas, N. et al., “Effect of Producer Gas Addition and Air Excess Ratio on Natural Gas Flame Luminescence [J],” Fuel 217:478-489, 2018.
- Chrisment, A., Color & Colorimetry (Paris: Editions 3C Conseil, 1998).
- Huang, H.W. and Zhang, Y., “Flame Color Characterization in the Visible and Infrared Red Spectrum Using a Digital Camera and Image Processing [J],” Measurement Science & Technology 19(19):085406, 2008.
- Huang H W, Zhang Y. Dynamic Application of Digital Image and Color Processing in Characterizing Flame Radiation Features [J]. Measurement Science & Technology, 2010, 21(8):085202.
- Huang H W, Zhang Y. Analysis of the Ignition Process Using a Digital Image and Color Processing Technique [J]. Measurement Science & Technology, 2011, 22 (22):075401.
- Hanbury, A., “The Taming of the Hue, Saturation and Brightness [J],” 2002.
- Xu M., Hung D.L.S., Yang J., Wu S., Flash-Boiling Spray Behavior and Combustion in a Direct Injection Gasoline Engine, in Australian Combustion Symposium 2015, Parkville, Victoria, Australia, Dec. 7-9 (2015)
- Xu, M. et al., “Flash Boiling: Easy and Better Way to Generate Ideal Sprays than the High Injection Pressure,” SAE International Journal of Fuels and Lubricants 6(1):137-148, 2013.