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High-Speed Imaging Studies of Gasoline Fuel Sprays at Fuel Injection Pressures from 300 to 1500 bar
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 03, 2018 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
High-pressure gasoline fuel injection is a means to improve combustion efficiency and lower engine-out emissions. The objective of this study was to quantify the effects of fuel injection pressure on transient gasoline fuel spray development for a wide range of injection pressures, including over 1000 bar, using a constant volume chamber and high-speed imaging. Reference grade gasoline was injected at fuel pressures of 300, 600, 900, 1200, and 1500 bar into the chamber, which was pressurized with nitrogen at 1, 5, 10, and 20 bar at room temperature (298 K). Bulk spray imaging data were used to quantify spray tip penetration distance, rate of spray tip penetration and spray cone angle. Near-nozzle data were used to evaluate the early spray development.
The bulk characteristics of the high pressure gasoline sprays were consistent with trends previously observed at lower fuel injection pressures, e.g. spray tip penetration distance increased with increased fuel injection pressure after the spray break-up time and sprays with higher cone angles were produced with increasing chamber pressure at constant fuel injection pressure. The spray break-up time was a strong function of the chamber pressure at lower fuel injection pressures, but the sensitivity to chamber pressure was negligible for fuel injection pressures over 1200 bar. The experimental results for spray tip penetration distance, spray tip penetration rate and spray break-up time were compared with several correlations from the literature. For the majority of the conditions, the spray tip penetration distance was under-predicted and the spray break-up time was over-predicted. Cavitation was not observed at any condition; however, the near-nozzle imaging results showed evidence of vapor pre-jets. The frequency of occurrence of the pre-jets transitioned from no observations at a chamber pressure of one bar to ~80% for chamber pressures of 20 bar, regardless of fuel injection pressure.
CitationMedina, M., Fatouraie, M., and Wooldridge, M., "High-Speed Imaging Studies of Gasoline Fuel Sprays at Fuel Injection Pressures from 300 to 1500 bar," SAE Technical Paper 2018-01-0294, 2018, https://doi.org/10.4271/2018-01-0294.
Data Sets - Support Documents
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- Kalghatgi, G.T., Risberg, P., and Ångström, H. , “Advantages of Fuels with High Resistance to Auto-ignition in Late-injection, Low-temperature, Compression Ignition Combustion,” SAE Technical Paper 2006-01-3385 , 2006, doi:10.4271/2006-01-3385.
- Kalghatgi, G.T., Risberg, P., and Ångström, H.-E. , “Partially Pre-Mixed Auto-Ignition of Gasoline to Attain Low NOx Aat High Load in a Compression Ignition Engine and Comparison with a Diesel Fuel,” SAE Technical Paper 2007-01-0006 , 2007, doi:10.4271/2007-01-0006.
- Manente, V., Johansson, B., and Cannella, W. , “Gasoline Partially Premixed Combustion, the Future of Internal Combustion Engines?” Int. J. Engine Res. 12(3):194-208, 2011, doi:10.1177/1468087411402441.
- Singh, R., Burch, T., Lavoie, G., and Wooldridge, M. , “Effects of Fuel Injection Events of Ethanol and Gasoline Blends on Boosted Direct-Injection Engine Performance Experimental Set-Up,” SAE Int. J. Fuels Lubr., 2017, doi:10.4271/2017-01-2238.
- Mohan, B., Yang, W., and Chou, S.K. , “Fuel Injection Strategies for Performance Improvement and Emissions Reduction in Compression Ignition Engines - a Review,” Renew. Sustain. Energy Rev. 28(x):664-676, 2013, doi:10.1016/j.rser.2013.08.051.
- Choi, C.Y. and Reitz, R.D. , “An Experimental Study on the Effects of Oxygenated Fuel Blends and Multiple Injection Strategies on DI Diesel Engine Emissions,” Fuel 78(11):1303-1317, 1999, doi:10.1016/S0016-2361(99)00058-7.
- Kim, K., Kim, D., Jung, Y., and Bae, C. , “Spray and Combustion Characteristics of Gasoline and Diesel in a Direct Injection Compression Ignition Engine,” Fuel 109(x):616-626, 2013, doi:10.1016/j.fuel.2013.02.060.
- Payri, R., Garcia, A., Domenech, V., Durrett, R., and Plazas, A.H. , “An Experimental Study of Gasoline Effects on Injection Rate, Momentum Flux and Spray Characteristics Using a Common Rail Diesel Injection System,” Fuel 97:390-399, 2012, doi:10.1016/j.fuel.2011.11.065.
- Eagle, W.E., Morris, S.B., and Wooldridge, M.S. , “High-Speed Imaging of Transient Diesel Spray Behavior during High Pressure Injection of a Multi-Hole Fuel Injector,” Fuel 116(0):299-309, 2014, doi:10.1016/j.fuel.2013.07.120.
- He, Z., Guo, G., Tao, X., Zhong, W. et al. , “Study of the Effect of Nozzle Hole Shape on Internal Flow and Spray Characteristics,” Int. Commun. Heat Mass Transf. 71:1-8, 2016, doi:10.1016/j.icheatmasstransfer.2015.12.002.
- Suh, H.K. and Lee, C.S. , “Effect of Cavitation in Nozzle Orifice on the Diesel Fuel Atomization Characteristics,” Int. J. Heat Fluid Flow 29(4):1001-1009, 2008, doi:10.1016/j.ijheatfluidflow.2008.03.014.
- Naber, J. and Siebers, D.L. , “Effects of Gas Density and Vaporization on Penetration and Dispersion of Diesel Sprays, SAE Technical Paper 960034 ,” 1996, doi:10.4271/960034.
- Hiroyasu, H. and Arai, M. , “Structure of Fuel Sprays in Diesel Engines, SAE Technical Paper 900475 ,” 1990, doi:10.4271/900475.
- Kostas, J., Honnery, D., and Soria, J. , “Time Resolved Measurements of the Initial Stages of Fuel Spray Penetration,” Fuel 88(11):2225-2237, 2009, doi:10.1016/j.fuel.2009.05.013.
- Taşkiran, Ö.O. and Ergeneman, M. , “Experimental Study on Diesel Spray Characteristics and Autoignition Process,” J. Combust. 2011:1-20, 2011, doi:10.1155/2011/528126.
- Tian, J., Zhao, M., Long, W., Nishida, K. et al. , “Experimental Study on Spray Characteristics under Ultra-High Injection Pressure for DISI Engines,” Fuel 186:365-374, 2016, doi:10.1016/j.fuel.2016.08.086.
- Crua, C., Shoba, T., Heikal, M., Gold, M., and Higham, C. , “High-Speed Microscopic Imaging of the Initial Stage of Diesel Spray Formation and Primary Breakup,” SAE Int. 2010:1085-1092, 2010, doi:10.4271/2010-01-2247.
- Crua, C., Heikal, M.R., and Gold, M.R. , “Microscopic Imaging of the Initial Stage of Diesel Spray Formation,” Fuel 157:140-150, 2015, doi:10.1016/j.fuel.2015.04.041.
- Pickett, L.M., Manin, J., Payri, R., Bardi, M., and Gimeno, J. , “Transient Rate of Injection Effects on Spray Development,” SAE Technical Paper 2013-24-0001 , 2013, doi:10.4271/2013-24-0001.