Effect of fuel and nozzle geometry on the off-axis oscillation of needle in diesel injectors using high-speed X-ray phase contrast imaging
Effect of fuel and nozzle geometry on the off-axis oscillation of needle in diesel injectors using high-speed X-ray phase contrast imaging
复制标题
使用高速 X 射线相衬成像研究燃料和喷嘴几何形状对柴油喷油器中针阀离轴振荡的影响
DOI：
10.1088/1748-0221/11/05/c05015
复制
发表时间：
2016-05
影响因子：
1.3
通讯作者：
Wang, J.
中科院分区：
文献类型：
--
作者：
Zhang, X.;Liu, J.;Wang, J.
柴油机喷油嘴内部的流动特性对喷雾特性有很大的影响。此外，针阀的离轴振荡会导致喷嘴内孔流的变化。本文采用高速X射线相衬成像和定量图像处理技术研究了针的振荡现象。分析了喷油量、喷油压力和喷油嘴几何形状对喷油针振动的影响。结果表明，喷针在垂直方向和水平方向上的振动与喷射压力无关。最大振荡范围为14μ m，生物农药的施用由于粘度的增加，使针状振荡略有减小。针阀摆动范围随孔数的增加而增大。多孔注射器中较大的针振荡主要是由于几何问题或较低针升程时的生产问题。此外，还讨论了喷针摆动对喷雾形态的影响。
The diesel spray characteristics are strongly influenced by the flow dynamics inside the injector nozzle. Moreover, the off-axis oscillation of needle could lead to variation of orifice flow in the nozzle. In this paper, the needle oscillation was investigated using high-speed X-ray phase contrast imaging and quantitative image processing. The effects of fuel, injection pressure and nozzle geometry on the needle oscillation were analyzed. The results showed that the vertical and horizontal oscillation of needle was independent on the injection pressure. The maximum oscillation range of 14μ m was found. Biodiesel application slightly decreased the needle oscillation due to high viscosity. The needle oscillation range increased generally with increasing hole number. The larger needle oscillation in multi-hole injectors was dominated by the geometry problem or production issue at lower needle lift. In addition, the influence of needle oscillation on the spray morphology was also discussed.
登录
查看更多内容
影响因子：
7.4
作者：
S. Som;D. Longman;A. Ramirez;S. Aggarwal
通讯作者：
S. Som;D. Longman;A. Ramirez;S. Aggarwal
影响因子：
2.5
作者：
S. Moon;Taku Tsujimura;Yuan Gao;Suhan Park;Jin Wang;N. Kurimoto;Y. Nishijima;M. Oguma
通讯作者：
S. Moon;Taku Tsujimura;Yuan Gao;Suhan Park;Jin Wang;N. Kurimoto;Y. Nishijima;M. Oguma
影响因子：
10.4
作者：
Salvador, F. J.;Martinez-Lopez, J.;De Alfonso, C.
通讯作者：
De Alfonso, C.
影响因子：
1.2
作者：
Kastengren, Alan L.;Tilocco, F. Zak;Bazyn, Tim
通讯作者：
Bazyn, Tim
影响因子：
1.8
作者：
F. J. Salvador;J. Martínez-López;J. Romero;M. Roselló
通讯作者：
F. J. Salvador;J. Martínez-López;J. Romero;M. Roselló