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CLC number: TH71

On-line Access: 2015-01-04

Received: 2014-04-29

Revision Accepted: 2014-08-18

Crosschecked: 2014-12-08

Cited: 0

Clicked: 2093

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Zhi-long LI

http://orcid.org/0000-0002-0167-4037

Zhi-jun WU

http://orcid.org/0000-0002-5430-2667

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Journal of Zhejiang University SCIENCE A 2015 Vol.16 No.1 P.11-17

http://doi.org/10.1631/jzus.A1400118


Development and application of an automatic measurement method for nozzle orifice diameter and length


Author(s):  Zhi-long Li, Zhi-jun Wu, Ya Gao, Wei-di Huang, Hui-feng Gong, Lin Zhang, Li-guang Li

Affiliation(s):  School of Mechanical Engineering, Tongji University, Shanghai 200092, China; more

Corresponding email(s):   zjwu@tongji.edu.cn

Key Words:  Diesel nozzle, Orifice diameter, Orifice length, X-ray tomography


Zhi-long Li, Zhi-jun Wu, Ya Gao, Wei-di Huang, Hui-feng Gong, Lin Zhang, Li-guang Li. Development and application of an automatic measurement method for nozzle orifice diameter and length[J]. Journal of Zhejiang University Science A, 2015, 16(1): 11-17.

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author="Zhi-long Li, Zhi-jun Wu, Ya Gao, Wei-di Huang, Hui-feng Gong, Lin Zhang, Li-guang Li",
journal="Journal of Zhejiang University Science A",
volume="16",
number="1",
pages="11-17",
year="2015",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1400118"
}

%0 Journal Article
%T Development and application of an automatic measurement method for nozzle orifice diameter and length
%A Zhi-long Li
%A Zhi-jun Wu
%A Ya Gao
%A Wei-di Huang
%A Hui-feng Gong
%A Lin Zhang
%A Li-guang Li
%J Journal of Zhejiang University SCIENCE A
%V 16
%N 1
%P 11-17
%@ 1673-565X
%D 2015
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1400118

TY - JOUR
T1 - Development and application of an automatic measurement method for nozzle orifice diameter and length
A1 - Zhi-long Li
A1 - Zhi-jun Wu
A1 - Ya Gao
A1 - Wei-di Huang
A1 - Hui-feng Gong
A1 - Lin Zhang
A1 - Li-guang Li
J0 - Journal of Zhejiang University Science A
VL - 16
IS - 1
SP - 11
EP - 17
%@ 1673-565X
Y1 - 2015
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1400118


Abstract: 
Diesel sprays are important to engine combustion and emission formation processes, however, their behaviors are difficult to predict as they are very sensitive to the internal geometries of the nozzle. Based on synchrotron radiation x-ray tomography, a novel method is presented for measuring automatically the orifice diameter and length of fuel nozzles. According to this method, a clear definition of orifice inlet and outlet is given, and the diameters along the orifice from inlet to outlet as well as the orifice length can be measured. Measurements of a single-hole nozzle and an eight-hole nozzle have been performed accordingly. The results show that this method can automatically measure the orifice diameters from outlet to inlet along the whole orifice axis with relatively high precision, regardless of whether it is a single-hole or a multi-hole nozzle. The profile of the diameters obtained shows the differences between the nominal dimensions and the actual ones, which gives a more precise feedback for nozzle manufacture, and provides a new basis for precisely studying the impacts of internal geometries on spray behavior.

嘴喷孔直径和长度自动测量方法的开发和应用

目的:直喷内燃机工作过程中,燃油通过喷油嘴上的微小喷孔(直径为100-200 μm)输送到燃烧室内进行燃烧做功。为定量研究喷孔直径和长度等结构参数对燃油输运过程的影响,首先需要实现对这些结构参数的高精度测量。
创新点:对喷油嘴喷孔入口和出口等重要结构特征进行精确地定义,实现喷油嘴微小喷孔的直径和长度的高精度自动测量。
方法:1. 基于同步辐射X射线CT扫描技术实现喷油嘴顶部结构的三维重构;2. 结合几何学原理,从这些离散的三维数字结构数据中提取宏观几何特征参数。
结论:1. 对喷油嘴喷孔结构特征参数进行了精确地定义;2. 基于微米级精度建立了喷油嘴喷孔直径和长度的自动测量方法,实现喷孔沿其轴线从入口到出口的直径分布的自动测量。

关键词:油喷嘴;喷孔直径;喷孔长度;X射线CT扫描

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1]Apollonius, 1896. Treatise on Conic Sections. Cambridge University Press, Cambridge, England.

[2]Araneo, L., Coghe, A., Brunello, G., et al., 1999. Experimental investigation of gas density effects of diesel spray penetration and entrainment. SAE Technical Paper 1999-01-0525.

[3]Bryan, J.B., 1982. A simple method for testing measuring machines and machine tools. Part 1: principles and applications. Precision Engineering, 4(2):61-69.

[4]Diver, C., Atkinson, J., Helml, H.J., et al., 2004. Micro-EDM drilling of tapered holes for industrial applications. Journal of Materials Processing Technology, 149(1-3):296-303.

[5]Dong, Q., Long, W.Q., Ishima, T., et al., 2013. Spray characteristics of V-type intersecting hole nozzles for diesel engines. Fuel, 104:500-507.

[6]Fezzaa, K., Lee, W.K., Cheong, S.K., et al., 2005. Ultrafast X-ray phase-enhanced microimaging for visualizing fuel injection process. SAE Technical Paper 2005-24-093.

[7]Fitzgibbon, A., Pilu, M., Fisher, R.B., 1999. Direct least square fitting of ellipses. IEEE Transaction on Pattern Analysis and Machine Intelligence, 21(5):476-480.

[8]Gao, Y., Deng, J., Li, C., et al., 2009. Experimental study of the spray characteristics of biodiesel based on inedible oil. Biotechnology Advances, 27(5):616-624.

[9]Gao, Y., Huang, W., Gao, Y., et al., 2013. A study on the hole-to-hole spray variation based on nozzle internal structure. SAE Technical Paper 2013-01-1611.

[10]Huang, W.D., Wu, Z.J., Gong, H.F., et al., 2013a. Effect of nozzle geometry on macroscopic behavior of diesel spray in the near-nozzle field. SAE Technical Paper 2013-01-1587.

[11]Huang, W.D., Gao, Y., Li, Z.L., et al., 2013b. Three-dimensional investigations of flow characteristics in a diesel nozzle. Atomization and Sprays, 23(4):343-361.

[12]Kao, C.C., Shih, A.J., 2007. Form measurements of micro-holes. Measurement Science and Technology, 18(11):3603.

[13]Kastengren, A.L., Tilocco, F.Z., Powell, C.F., et al., 2012. Engine combustion network (ECN): measurements of nozzle geometry and hydraulic behavior. Atomization and Sprays, 22(12):1011-1052.

[14]Macian, V., Bermudez, V., Payri, R., et al., 2003. New technique for determination of internal geometry of a diesel nozzle with the use of silicone methodology. Experimental Techniques, 27(2):39-43.

[15]Ohrn, T.R., Senser, D.W., Lefebvre, A.H., 1991. Geometrical effects on discharge coefficient for plain-orifice atomizers. Atomization and Sprays, 1(2):137-153.

[16]Payri, R., Salvador, F.J., Gimeno, J., et al., 2008. Diesel nozzle geometry influence on spray liquid-phase fuel penetration in evaporative conditions. Fuel, 87(7):1165-1176.

[17]Peiner, E., Balke, M., Doering, L., 2009. Form measurements inside fuel injector nozzle spray holes. Microelectronic Engineering, 86(4-6):984-986.

[18]Reitz, R.D., 1978. Atomization and Other Breakup Regimes of a Liquid Jet. PhD Thesis, Princeton University, Princeton, USA.

[19]Wu, Z.J., Zhu, Z.Y., Huang, Z., 2006. An experimental study on the spray structure of oxygenated fuel using laser-based visualization and particle image velocimetry. Fuel, 85(10-11):1458-1464.

[20]Wu, Z.J., Li, Z.L., Huang, W.D., et al., 2012. Comparisons of nozzle orifice processing methods using synchrotron X-ray macro-tomography. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 13(3):182-188.

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