Applying the continuous wavelet transform to the analysis of diesel engine conditions

Author(s)
Author(s)
Li, W.
Gu, F.
Ball, A. D.
Date Issued
2000
Conference
International Conference on Computational and Experimental Methods in Reciprocating Engines
Abstract
The continuous wavelet transform (CWT) is applied to analyse the acoustic signals obtained from a diesel engine. First a brief review in the analysis of engine acoustic signals is given. To obtain condition-indicating information, the characteristics and implementation of the CWT are addressed. Its capability of time-frequency localisation is demonstrated using a numerical example. The CWT representation of the acoustic signals exhibits a clear picture of the combustion process. The feature is then quantified using a local energy index. The results show that the method is able to discriminate a number of abnormal injection faults.
URI
SFU Affiliated Publication
No
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