Analysis of cyclic variability in combustion in internal combustion engines using wavelets

Wavelets have previously received little attention regarding their use in the study of cyclic variability in combustion. This paper provides a short introduction to wavelets and presents the results, in the form of scalograms, of their application to a time series of net heat release values. Althoug...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part D, Journal of automobile engineering Journal of automobile engineering, 2011-03, Vol.225 (3), p.341-353
Main Authors: Tily, R, Brace, C J
Format: Article
Language:English
Subjects:
Applied sciences
Automobile engines
Behavior
Engines and turbines
Exact sciences and technology
Fourier analysis
Internal combustion engines
Internal combustion engines: gazoline engine, diesel engines, etc
Mechanical engineering
Mechanical engineering. Machine design
Time series
Validity
Wavelet analysis
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Summary:Wavelets have previously received little attention regarding their use in the study of cyclic variability in combustion. This paper provides a short introduction to wavelets and presents the results, in the form of scalograms, of their application to a time series of net heat release values. Although wavelets have advantages over Fourier analysis in that they are capable of revealing transient behaviour, they appear to have shortcomings with respect to establishing sufficient confidence in the validity of the low-frequency features apparently present in the scalograms.
ISSN:0954-4070
2041-2991
DOI:10.1177/09544070JAUTO1723