This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Investigation of Macroscopic as well as Microscopic Spray Behavior of Multi-hole GDI Injector under Engine Like Hot Injector Body Conditions
Technical Paper
2018-01-0280
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Fuel injection is one of the most important processes in the GDI engine operation. Depending when the fuel is injected in the GDI engine, it can either work in homogeneous or stratified charge mode. In case of real engine operation, fuel injector gets heated due to heat transfer from the in-cylinder hot burnt gases. This can significantly affect the spray characteristics and ultimately the engine performance. In the present work, engine like hot injector body conditions have been created in a constant volume spray chamber. Five different temperatures conditions (23 °C, 100 °C, 150 °C, 200 °C and 250 °C) were created to study the effect of hot fuel conditions. Schlieren and Shadowgraph techniques were used to capture the vapor and the liquid phase of Isooctane, whereas droplet size information was measured using the Phase Doppler Particle Analyzer (PDPA). Results showed that with increase in fuel temperature, spray collapsed towards the injector axis due to flash boiling of the fuel. This spray collapse was quantified by measuring the overall spray cone angle of the liquid phase. It was observed that spray cone angle decreases drastically with increase in injector body temperature. Additionally, droplet size showed large reduction in SMD and AMD although fuel injection pressure was reduced from 100 bar to 40 bar. The liquid and the vapor penetration lengths were observed to be higher under hot injector body conditions.
Authors
Citation
Kale, R. and Banerjee, R., "Investigation of Macroscopic as well as Microscopic Spray Behavior of Multi-hole GDI Injector under Engine Like Hot Injector Body Conditions," SAE Technical Paper 2018-01-0280, 2018, https://doi.org/10.4271/2018-01-0280.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 |
Also In
References
- 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 10.4271/2013-01-1614
- She , J. Experimental Study on Improvement of Diesel Combustion and Emissions Using Flash Boiling Injection SAE Technical Paper 2010-01-0341 2010 10.4271/2010-01-0341
- Senda , J. , Wada , Y. , Kawano , D. , and Fujimoto , H. Improvement of Combustion and Emissions in Diesel Engines by Means of Enhanced Mixture Formation Based on Flash Boiling of Mixed Fuel International Journal of Engine Research 9 1 15 27 2008 10.1243/14680874JER02007
- Guo , H. et al. Effect of Flash Boiling on Microscopic and Macroscopic Spray Characteristics in Optical GDI Engine Fuel 190 79 89 2017 http://dx.doi.org/10.1016/j.fuel.2006.11.013
- Shen , S. , Jia , M. , Wang , T. , Lü , Q. et al. Measurement of the Droplets Sizes of a Flash Boiling Spray Using an Improved Extended Glare Point Velocimetry and Sizing Experiments in Fluids 57 4 56 2016 10.1007/s00348-016-2147-3
- Zhang , G. , Hung , D.L.S. , and Xu , M. Experimental Study of Flash Boiling Spray Vaporization through Quantitative Vapor Concentration and Liquid Temperature Measurements Experiments in Fluids 55 8 1804 2014 10.1007/s00348-014-1804-7
- Kale , R. and Banerjee , R. Influence of Engine like Conditions on Macroscopic as well as Microscopic Spray Behavior of GDI Injector Using Isooctane and Alcohols SAE Technical Paper 2017-01-0855 2017 10.4271/2017-01-0855
- Huang , Y. , Huang , S. , Deng , P. , Huang , R. et al. The Effect of Fuel Temperature on the Ethanol Direct Injection Spray Characteristics of a Multi-hole Injector SAE Int. J. Fuels Lubr. 7 3 792 802 2014 10.4271/2014-01-2734
- Wang , Z. , Wang , B. , Jiang , C. , Xu , H. et al. Microscopic Characterization of Isooctane Spray in the near Field under Flash Boiling Condition Applied Energy 180 Supplement C 598 606 2016 https://doi.org/10.1016/j.apenergy.2016.07.115
- Wang , Z. , Jiang , C. , Xu , H. , Badawy , T. et al. The Influence of Flash Boiling Conditions on Spray Characteristics with Closely Coupled Split Injection Strategy Applied Energy 187 Supplement C 523 533 2017 https://doi.org/10.1016/j.apenergy.2016.11.089
- Manin , J. , Jung , Y. , Skeen , S.A. , Pickett , L.M. et al. Experimental Characterization of DI Gasoline Injection Processes SAE Technical Paper 2015-01-1894 2015 10.4271/2015-01-1894
- Kale , R. and Banerjee , R. Liquid and Vapor Penetration Length Estimation for GDI Spray of Iso-Octane and Alcohols at Elevated Pressure and Temperature Conditions ILASS Asia, 18th Annual Conference on Liquid Atomization and Spray Systems - Asia
- Chan , Q.N. , Bao , Y. , and Kook , S. Effects of Injection Pressure on the Structural Transformation of Flash-Boiling Sprays of Gasoline and Ethanol in a Spark-Ignition Direct-Injection (SIDI) Engine Fuel 130 228 240 2014 http://dx.doi.org/10.1016/j.fuel.2014.04.015
- Allocca , L. , Alfuso , S. , Marchitto , L. , and Valentino , G. GDI Multi-Hole Injector: Particle Size and Velocity Distribution for Single and Jet-to-Jet Evolution Analysis the ICLASS 2009, 11th Triennial International Annual Conference on Liquid Atomization and Spray Systems Vail, CO 2009
- Lefebvre , A.H. Atomization and Sprays Taylor& Francis Group CRC Press 1989
- Lee , S. and Park , S. Experimental Study on Spray Break-Up and Atomization Processes from {GDI} Injector Using High Injection Pressure up to 30 {MPa} International Journal of Heat and Fluid Flow 45 14 22 2014 http://dx.doi.org/10.1016/j.ijheatfluidflow.2013.11.005
- Kay , P.J. , Bowen , P.J. , Gold , M. , and Sapsford , S. Studies of Gasoline Direct-Injection Sprays at Elevated Ambient Gas Temperatures and Pressures Atomization and Sprays 22 4 305 331 2012
- Wu , S. , Xu , M. , Hung , D.L.S. , Li , T. et al. Near-Nozzle Spray and Spray Collapse Characteristics of Spark-Ignition Direct-Injection Fuel Injectors under Sub-Cooled and Superheated Conditions Fuel 183 Supplement C 322 334 2016 https://doi.org/10.1016/j.fuel.2016.06.080
- Zhang , M. , Pei , Y. , Liu , Y. , and Zhang , Y. Study on Subcritical/Supercritical Spray Characteristics of a Multi-Hole Gasoline Direct Injector SAE Technical Paper 2016-01-0849 2016 10.4271/2016-01-0849
- Raid , R.C. , Prausnitz , J.M. , and Poling , B.E. The Properties of Gases and Liquids Fifth New York McGraw Hill Book Co. 2001
- Schroeter , R.A. and Meinhart , M. Optical Methodology for Characterization of a Gasoline Direct Injection Closing Event Droplet Distribution SAE Technical Paper 2017-01-0858 2017 10.4271/2017-01-0858