Full Text:   <2750>

Summary:  <1987>

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: 4426

Citations:  Bibtex RefMan EndNote GB/T7714


Zhi-long LI


Zhi-jun WU


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


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",
publisher="Zhejiang University Press & Springer",

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%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

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

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.


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。
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。


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


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