Volume 32 Issue 02
Feb.  2006
Turn off MathJax
Article Contents
He Yongling, Yan Zhiqiang. Time-frequency characteristics research for pressure waves of fuel injection system of diesel engine[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(02): 244-248. (in Chinese)
Citation: He Yongling, Yan Zhiqiang. Time-frequency characteristics research for pressure waves of fuel injection system of diesel engine[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(02): 244-248. (in Chinese)

Time-frequency characteristics research for pressure waves of fuel injection system of diesel engine

  • Received Date: 02 Dec 2004
  • Publish Date: 28 Feb 2006
  • In research of pressure wave of fuel injection system of diesel engine, with Wigner-Ville distribution, the time-frequency characteristics of pressure wave in fuel injection system of a diesel engine under condition of liquid-gas tow-phase flow was analyzed. The comparison of its results with the results of wavelet function analysis was made. The results show that using Wigner-Ville distribution the energy density of pressure wave of fuel injection system in time and frequency field can be better described and the change of frequency of this unstable signal with time can be better reflect. When long living time cavitation existed in fuel injection system, the energy density of pressure wave, which included some high frequency energy besides low frequency energy in this energy, concentrates mostly on the first pressure wave and there is not any high frequency energy in the second pressure wave. When short living time cavitation existed in fuel injection system, frequency of first pressure wave is low and the energy density is high. And there is some high frequency energy in the second pressure wave.

     

  • loading
  • [1] 陈桂明,张明照,戚红雨. 应用MATABLE语言处理数字信号与数据图像[M] 北京:科学出版社,2000 Chen Guiming, Zhang Mingzhao, Qi Hongyu. Deal with digital signal and image by matable language [M] Beiing:Science Press, 2000(in Chinese) [2] 胡昌华. 基于MATLAB的系统分析与设计:小波分析[M] 西安:西安电子科技大学出版社,1999 Hu Changhua. System analysis and design base on MATLAB:wavelet analysis [M] Xi'an:Xidian University Press, 1999(in Chinese) [3] Stephane Mallat(法)著. 信号处理的小波导引[M] 北京:机械工业出版社,2002 Stephane Mallat (France). Wavelet guide of deal with signal[M] Beijing:China Machine Press, 2002(in Chinese) [4] He Yongling, Yan Long, Zong Yongping, et al. A wavelet analysis on frequency characteristics of pressure wave of fuel injection system of diesel engine .In:2nd International Symposium on Instrumentation Science and Technology . Harbin:The Press In Harbin Institute of Technology,2002. 3-881~3-886 [5] 何勇灵,颜 龙,宗永平,等.基于柴油机喷油系统压力波信号的小波函数优化分析[J] 内燃机工程, 2003,24(1):13~17 He Yongling, Yan Long, Zong Yongping,et al. An optimum analysis of wavelet functions based on signal of pressure wave of diesel fuel injection system[J] Chinese Internal Combustion Engine Engineering, 2003,24(1):13~17(in Chinese). [6] 张振仁,石林锁,王成栋,等. 基于小波分析和时域分析的柴油机气缸压力识别[J] 内燃机学报,1999,17(2):181~186 Zhang Zhenren, Shi Linsuo,Wang Chengdong,et al. Identification of diesel cylinder pressure base on wavelet analysis and time series analysis[J] Transaction of Chinese Society for Internal Combustion Engine, 1999,17(2):181~186(in Chinese) [7] 何勇灵,刘建新,李 民,等.农用柴油机喷油系统中液--汽两相流动过程的试验研究[J] 农业工程学报,2000,16(1):31~34 He Yongling, Liu Jianxin, Li Min, et al. An experiment investigation on process of two-phase flow in fuel injection system of agricultural diesel engine[J] Transaction of the Chinese Society of Agricultural Engineering, 2000,16(1):31~34(in Chinese) [8] 何勇灵,刘建新,赵致和,等.一种研究柴油机喷油系统中汽泡的新方法 . 内燃机学报,2000,18(3):254~257 He Yongling, Liu Jianxin, Zhao Zhihe, et al. A new method for study cavitation in fuel injection system of diesel engine[J] Transaction of Chinese Society for Internal Combustion Engine,2000, 18(3):254~257(in Chinese)
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views(2180) PDF downloads(938) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return