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An Analysis of Diesel Spray Characteristics with Small Injection Amount under Similarity Law Condition
Technical Paper
2019-32-0590
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In this paper, the Diesel spray characteristics were studied by HS video camera and the Laser Absorbing Scattering (LAS) technique means of the combustion deterioration problem caused by the engine downsizing based on the geometrical similarity was investigated. In the experiments, three Diesel injectors with the hole diameters of 0.07mm, 0.101mm and 0.133mm were used. The injection pressures of the injectors with three different diameters were 45MPa, 93MPa and 160MPa, respectively. The Diffused Background Illumination (DBI) method was employed for the nonevaporating spray experiment to obtain spray tip penetration and spray angle at room temperature. The LAS technique was employed for the evaporating spray experiment to obtain the equivalence ratio distributions, evaporation rate, and vapor phase tip penetration. Moreover, the Wakuri Momentum Theory was applied to analyze the data obtained by both the non-evaporating and the evaporating spray experiments. The non-evaporating results show that the spray tip penetrations scaled by the similarity law matched well from the injectors of different hole diameters. However, the scaled spray angle of the injector with smaller hole diameter is smaller than that of the injector with larger hole diameter. Furthermore, the spray of the smaller hole diameter injector seems to have smaller mean equivalence ratio than that of the larger hole diameter injector. The scaled vapor phase penetration of the injector with medium hole diameter is larger than that of other injectors. The fuel spray from the injector with smaller hole diameter has slower evaporation rate.
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Authors
Citation
JIN, Y., ZHAI, C., NISHIDA, K., and OGATA, Y., "An Analysis of Diesel Spray Characteristics with Small Injection Amount under Similarity Law Condition," SAE Technical Paper 2019-32-0590, 2020.Data Sets - Support Documents
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References
- Chikahisa , T. , Kikuta , K. , and Murayama , T. Combustion Similarity for Different Size Diesel Engines: Theoretical Prediction and Experimental Results SAE Technical Paper 920465 1992 10.4271/920465
- Chikahisa , T. and Murayama , T. Theory and Experiments on Air-Entrainment in Fuel Sprays and Their Application to Interpret Diesel Combustion Processes SAE Technical Paper 950447 1995 10.4271/950447
- Chikahisa T. , Konno M. and Murayama T. Theory and Practice of Scale Model Experiments for Predicting Fuel Consumption, Emissions, and Thermal Loads in Large Diesel Engines CIMAC 1995
- Shi , Y. and Reitz , R. Study of Diesel Engine Size-Scaling Relationships Based on Turbulence and Chemistry Scales SAE Technical Paper 2008-01-0955 2008 10.4271/2008-01-0955
- Staples , L. , Reitz , R. , and Hergart , C. An Experimental Investigation into Diesel Engine Size-Scaling Parameters SAE Int. J. Engines 2 1 1068 1084 2009 10.4271/2009-01-1124
- Shi Yu , Hai-Wen Ge , and Reitz Rolf D. Scaling Laws for Diesel Combustion Systems Computational Optimization of Internal Combustion Engines 147 176 Springer London 2011
- Inagaki , K. , Mizuta , J. , Kawamura , K. , Idota , Y. et al. Theoretical Study on Spray Design for Small-Bore Diesel Engine SAE Technical Paper 2016-01-0740 2016 10.4271/2016-01-0740
- Yuyin Zhang , Tomoaki Ito and Keiya Nishida Characterization of Mixture Formation in Split-Injection Diesel Sprays via Laser Absorption-Scattering (LAS) Technique SAE technical paper 2001-01-3498 2001 10.4271/2001-01-3498
- Zhixia He , Zhuang Shao , Qian Wang et al. Experimental study of cavitating flow inside vertical multi-hole nozzles with different length-diameter ratios using diesel and biodiesel Experimental Thermal and Fluid Science. 60 252 262 2015 10.1016/j.expthermflusci.2014.09.015