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Optical Characterization of Propane at Representative Spark Ignition, Gasoline Direct Injection Conditions
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 5, 2016 by SAE International in United States
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The focus of internal combustion (IC) engine research is the improvement of fuel economy and the reduction of the tailpipe emissions of CO2 and other regulated pollutants. Promising solutions to this challenge include the use of both direct-injection (DI) and alternative fuels such as liquefied petroleum gas (LPG).
This study uses Mie-scattering and schlieren imaging to resolve the liquid and vapor phases of propane and iso-octane, which serve as surrogates for LPG and gasoline respectively. These fuels are imaged in a constant volume chamber at conditions that are relevant to both naturally aspirated and boosted, gasoline direct injection (GDI) engines. It is observed that propane and iso-octane have different spray behaviors across these conditions. Iso-octane is subject to conventional spray breakup and evaporation in nearly all cases, while propane is heavily flash-boiling throughout the GDI operating map. This severe flashing behavior has major implications for the design and calibration of LPG DI injection systems and engines.
CitationLacey, J., Poursadegh, F., Brear, M., Petersen, P. et al., "Optical Characterization of Propane at Representative Spark Ignition, Gasoline Direct Injection Conditions," SAE Technical Paper 2016-01-0842, 2016, https://doi.org/10.4271/2016-01-0842.
- Zhao F., Lai M.-C., and Harrington D., Automotive spark-ignited direct-injection gasoline engines. Progress in Energy and Combustion Science, 1999. 25: p. 437-562.
- Morganti, K., Foong, T., Brear, M., Da Silva, G. et al., "Design and Analysis of a Modified CFR Engine for the Octane Rating of Liquefied Petroleum Gases (LPG)," SAE Int. J. Fuels Lubr. 7(1):283-300, 2014, doi:10.4271/2014-01-1474.
- Morganti K. J., Foong T.M., Brear M.J., da Silva G., Yang Y., and Dryer F.L., The Research and Motor octane numbers of Liquified Petroleum Gas (LPG). Fuel, 2013. 108: p. 797-811.
- Morganti K. J., Brear M. J., da Silva G., Yang Y., and Dryer F.L., The autoignition of Liquefied Petroleum Gas (LPG) in spark-ignition engines. Proceedings of the Combustion Institute, 2015. 35(3): p. 2933-2940.
- Price, R., Wilkinson, J., Jones, D., and Morley, C., "A Laboratory Simulation and Mechanism for the Fuel Dependence of SI Combustion Chamber Deposit Formation," SAE Technical Paper 952445, 1995, doi:10.4271/952445.
- Parrish, S., "Evaluation of Liquid and Vapor Penetration of Sprays from a Multi-Hole Gasoline Fuel Injector Operating Under Engine-Like Conditions," SAE Int. J. Engines 7(2):1017-1033, 2014, doi:10.4271/2014-01-1409.
- Rotondi R., Leger C., Mojtabi M., and Wigley G., Multihole gasoline direct injection spray plumes, in 23rd Annual Conference on Liquid Atomization and Spray Systems2010: Brno, Czech Republic.
- Zeng W., Xu M., Zhang M., Zhang Y., and Cleary D. J., Macroscopic characteristics for direct-injection multi-hole sprays using dimensionless analysis. Experimental Thermal and Fluid Science, 2012. 40: p. 81-92.
- Mesman, P. and Veenhuizen, B., "The Spray Behavior of Liquid LPG at Different Back Pressures During Injection in a Constant Volume Chamber," SAE Technical Paper 2009-01-1834, 2009, doi:10.4271/2009-01-1834.
- "Spray G" Operating Condition. 3 Dec. 2014. Engine Combustion Network.; Available from: http://www.sandia.gov/ecn/G/targetCondition/sprayG.php.
- Zeng W., Xu M., Zhang G., Zhang Y., and Cleary D. J., Atomization and vaporization for flash-boiling multi-hole sprays with alcohol fuels. Fuel, 2012. 95: p. 287-297.
- Park B.S. and Lee S.Y., An experimental investigation of the flash atomization mechanism. Atomization and Sprays, 1994. 4: p. 159-179.
- Sher E., Bar-Kohany T., and Rashkovan A., Flash-boiling atomization. Progress in Energy and Combustion Science, 2007. 34: p. 417-439.
- Zhang G., Xu M., Zhang Y., and Hung D.L.S.. Characteristics of Flash Boiling Fuel Sprays from Three Types of Injector for Spark Ignition Direct Injection (SIDI) Engines. in Proceedings of the FISITA 2012 World Automotive Congress. 2012.
- Schmitz, I., Ipp, W., and Leipertz, A., "Flash Boiling Effects on the Development of Gasoline Direct-Injection Engine Sprays," SAE Technical Paper 2002-01-2661, 2002, doi:10.4271/2002-01-2661.
- Serras-Pereira J., van Romunde Z., Aleiferis P.G., Richarson D., Wallace S., and Cracknell R.F., Cavitation, primary break-up and flash boiling of gasoline, iso-octane and npentane with a real-size optical direct-injection nozzle. Fuel, 2010. 89: p. 2592-2607.
- Xu, M., Zhang, Y., Zeng, W., Zhang, G. et al., "Flash Boiling: Easy and Better Way to Generate Ideal Sprays than the High Injection Pressure," SAE Int. J. Fuels Lubr. 6(1):137-148, 2013, doi:10.4271/2013-01-1614.
- Oza, R. and Sinnamon, J., "An Experimental and Analytical Study of Flash-Boiling Fuel Injection," SAE Technical Paper 830590, 1983, doi:10.4271/830590.
- Reitz R.D., A Photographic Study of Flash-Boiling Atomization. Aerosol Science and Technology, 2007. 12: p. 561-569.
- She, J., "Experimental Study on Improvement of Diesel Combustion and Emissions Using Flash Boiling Injection," SAE Technical Paper 2010-01-0341, 2010, doi:10.4271/2010-01-0341.
- Wood A., Wigley G., and Helie J.. Flash boiling Sprays produced by a 6-hole GDI Injector. in 17th International Symposium on Applications of Laser Techniques to Fluid Mechanics. 2014. Lisbon, Portugal.
- Mojtabi M., Wigley G., and Helie J.. The Effect of Flash Boiling on the Atomization Performance of GDI Multi-Stream Injectors. in Atomization and Sprays. 2014. Bremen, Germany.
- Aleiferis P.G., Serras-Pereira J., van Romunde Z., and Caine M.W. J., Mechanisms of spray formation and combustion from a multi-hole injector with E85 and gasoline. Combustion and Flame, 2010. 157: p. 735-756.
- Zhang G., Hung D.L.S., and Xu M., Experimental study of flash boiling spray vaporzation through quantitative vapor concentration and liquid temperature measurements. Experiments in Fluids, 2014. 55(1804).
- 2014, SAE J2715 Gasoline Fuel Injector Spray Measurement and Characterization.
- Siebers, D., "Liquid-Phase Fuel Penetration in Diesel Sprays," SAE Technical Paper 980809, 1998, doi:10.4271/980809.
- Moulai, M., Grover, R., Parrish, S., and Schmidt, D., "Internal and Near-Nozzle Flow in a Multi-Hole Gasoline Injector Under Flashing and Non-Flashing Conditions," SAE Technical Paper 2015-01-0944, 2015, doi:10.4271/2015-01-0944.
- Schmidt D.P., M.L.C., The internal flow of diesel fuel injector nozzles: a review. International Journal of Engine Research, 2001. 2(1).
- Lee J., Madabhushi R., Fotache C., Gopalakrishnan S., and Schmidt D., Flashing Flow of Superheated Jet Fuel. Proceedings of the Combustion Institute, 2009. 32(2).
- Soteriou, C., Andrews, R., and Smith, M., "Direct Injection Diesel Sprays and the Effect of Cavitation and Hydraulic Flip on Atomization," SAE Technical Paper 950080, 1995, doi:10.4271/950080.
- Befrui, B., Corbinelli, G., Hoffmann, G., Andrews, R. et al., "Cavitation and Hydraulic Flip in the Outward-Opening GDi Injector Valve-Group," SAE Technical Paper 2009-01-1483, 2009, doi:10.4271/2009-01-1483.