Cylinder air tightness;
starting voltage;
mallat algorithm;
feature recognition;
D O I:
10.1016/j.egypro.2011.10.380
中图分类号:
TE [石油、天然气工业];
TK [能源与动力工程];
学科分类号:
0807 ;
0820 ;
摘要:
Cylinder air tightness is an important indicator to the comprehensive performance of internal combustion engine. It can be got the low-frequency and high-frequency signals of the starting voltage waveform using multi-scale analysis method and by binary discrete wavelet transform with the Mallat algorithm. The experiment results show that the working conditions of diesel engine starting process can be shown from the low-frequency signals, and the main frequency distribution can be recognised from the high frequency partial. This algorithm can effectively identify signal characteristics, and provide a reliable basis for signal feature recognition. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of the Organizers of 2011 International Conference on Energy and Environmental Science.
机构:
Yancheng Normal Univ, Sch Foreign Languages, Yancheng 224002, Jiangsu, Peoples R ChinaYancheng Normal Univ, Sch Foreign Languages, Yancheng 224002, Jiangsu, Peoples R China