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Effect of Nozzle Geometry on Macroscopic Behavior of Diesel Spray in the Near-Nozzle Field
Technical Paper
2013-01-1587
ISSN: 0148-7191, e-ISSN: 2688-3627
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Language:
English
Abstract
In this study, the orifice inlet rounding radii of four diesel
nozzles with different hydro erosive grinding time were measured
based on the x-ray CT scan technology provided by Shanghai
Synchrotron Radiation Facility (SSRF), and a wide parametrical
study of the spray macroscopic behavior in the first 18 mm from the
nozzle tip have been carried out with high speed camera. And then
the influence of orifice inlet rounding radius on the spray
behavior in the near-nozzle field was thoroughly investigated.
The investigation results show that: the mean values of orifice
inlet rounding radii of different nozzles are measured to be on the
order of 21.5-56.8 μm. Although the spray tip penetrations of
different nozzles tend to increase with the hydro erosive grinding
time through statistical analyzing method, the variations of
penetration from nozzles are less than 15% according to different
hydro erosive grinding timing. For the spray cone angle in the
near-nozzle field, the same maximum for nozzles of different hydro
erosive grinding time can be achieved at the unsteady state, but
hydro erosive grinding can shorten the unsteady duration of spray
cone angle. During the steady state of spray, the difference in
spray behavior from nozzles is distinctive and should adopt the
standard deviation of orifice inlet rounding radii to characterize
instead of the mean value. A new correlation is proposed which
accounts for the influence of the orifice inlet rounding radius on
the spray cone angle at the steady state.
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Authors
Citation
Huang, W., Wu, Z., Gong, H., Gao, Y. et al., "Effect of Nozzle Geometry on Macroscopic Behavior of Diesel Spray in the Near-Nozzle Field," SAE Technical Paper 2013-01-1587, 2013, https://doi.org/10.4271/2013-01-1587.Also In
References
- Payri , R. , Salvador , F., J. , Gimeno , J. , and Zapata , L., D. Diesel nozzle geometry influence on spray liquid-phase fuel penetration in evaporative conditions Fuel 87 7 1165 1176 2008 10.1016/j.fuel.2007.05.058
- Han , J. , Lu , P. , Xie , X. , Lai , M. et al. Investigation of Diesel Spray Primary Break-up and Development for Different Nozzle Geometries SAE Technical Paper 2002-01-2775 2002 10.4271/2002-01-2775
- Desantes , J. , Payri , R. , Salvador , F. , and Soare , V. Study of the Influence of Geometrical and Injection Parameters on Diesel Sprays Characteristics in Isothermal Conditions SAE Technical Paper 2005-01-0913 2005 10.4271/2005-01-0913
- Som , S. , Ramirez , A., I. , Longman , D., E. , and Aggarwal , S., K. Effect of nozzle orifice geometry on spray, combustion, and emission characteristics under diesel engine conditions Fuel 90 3 1267 1276 2011 10.1016/j.fuel.2010.10.048
- Wang , W., H. , Hu , S., J. Geometry and surface characterization of micro-holes in fuel injector nozzles Nanotechnology and Precisions Engineering 2 1 65 70 2004
- Diver , C. , Atkinson , J. , Helml , H., J. et al. Micro-EDM drilling of tapered holes for industrial applications Journal of Material Processing Technology 149 1-3 296 303 2004 10.1016/j.jmatprotec.2003.10.064
- Jung , D , Wang , W , Knafl , A et al. Experimental investigation of abrasive flow machining effects on injector nozzle geometries, engine performance, and emissions in a di diesel engine International Journal of Automotive Technology 9 1 9 15 2008 10.1007/s12239-008-0002-0
- Kostas , J. , Honnerya , D. , Soriaa , J. The time resolved measurements of initial stages of fuel spray penetration Fuel 88 11 2225 2237 2009 10.1016/j.fuel.2009.05
- Peiner E , Balke M , Doering L. Form measurement inside fuel injector nozzle spray holes Microelectronic Engineering 86 4-6 984 986 2009 10.1016/j.mee.2008.12.016
- Kim B. , Masuzawa T. The vibroscanning method for the measurement of micro-hole profiles Measurement Science and Technology 10 8 697 705 1999 10.1088/0957-0233/10/8/034
- Macian V , Bermudez V , Payri R et al. New technique for determination of internal geometry of a diesel nozzle with the use of silicone methodology Experimental Techniques 27 2 39 43 2003
- Wu , Z., J. , Li , Z., L. , Gao , Y. , Deng , J. et al. Measurement method for diesel nozzle internal geometry and size using high-energy synchrotron radiation X-ray Journal of Jilin University(Engineering and Technology Edition) 41 1 128 132 2011
- Wu , Z., J. , Li , Z., L. , Huang , W., D. , Gong , H., F. et al. Comparisons of nozzle orifice processing methods using synchrotron X-ray macro-tomography Journal of Zhejiang University-Science A 13 3 182 188 2012 10.1631/jzus.A1100252
- Huang , W., D. , Wu , Z., J. , Li , Z., L. , Gao , Y. et al. Diesel spray penetration model based on nozzle internal geometry Transactions of CSICE 30 2 124 128 2012
- Pastor , J., V. , Arrègle , J. , García , J., M. , Zapata , L., D. Segmentation of diesel spray images with log-likelihood ratio test algorithm for non-gaussian distributions Applied Optics 46 6 888 899 2007 10.1364/AO.46.000888
- Liu , Z. , Im , K. , Wang , Y. , Fezzaa , K. et al. Near-Nozzle Structure of Diesel Sprays Affected by Internal Geometry of Injector Nozzle: Visualized by Single-Shot X-ray Imaging SAE Technical Paper 2010-01-0877 2010 10.4271/2010-01-0877
- Reitz , R. and Bracco , F. On the Dependence of Spray Angle and Other Spray Parameters on Nozzle Design and Operating Conditions SAE Technical Paper 790494 1979 10.4271/790494
- Ruiz , F. and Chigier , N. The Effects of Design and Operating Conditions of Fuel Injectors on Flow and Atomization SAE Technical Paper 870100 1987 10.4271/870100
- Hiroyasu , H. and Arai , M. Structures of Fuel Sprays in Diesel Engines SAE Technical Paper 900475 1990 10.4271/900475
- More , J. The Levenberg-Marquardt algorithm: implementation and theory Lecture Notes in Mathematics 630 105 116 10.1007/BFb0067700