This paper reveals that the ignition and combustion process of Spark-ignited Engine (SIE) inspires electromagnetic interference (EMI) that bears some inner information from SIE. The EMI conducted measurement and radiated measurement methods are experimented upon and both obtain correct signals while conducted measurement gets higher signal/noise ratio than radiated measurement. Because most signals are found in irregular structures and transient forms, the traditional frequency analysis tool Fourier Transform fails to deal with; and because during the combustion process the signals are mixed with environment noise; we use wavelet decomposition and Lipschitz signal singularity identification algorithm to confirm that among EMI signals, there are significant signals generated by SIE, thus offering an effective approach to further unveil the relationship between combustion process and EMI. Considering that the measurement is wireless completely, it is possible to develop a potable instrument for SIE diagnostic and research purpose.
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ASME 2002 Internal Combustion Engine Division Fall Technical Conference
September 8–11, 2002
New Orleans, Louisiana, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
0-7918-4662-8
PROCEEDINGS PAPER
Electromagnetic Interference (EMI) as Spark-Ignited Combustion Engines Diagnostic Parameter and Its Wireless Measurement and Wavelet Analysis
Wei Wu
Wei Wu
Padova University, Padova, Italy
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Wei Wu
Padova University, Padova, Italy
Paper No:
ICEF2002-500, pp. 219-223; 5 pages
Published Online:
January 22, 2009
Citation
Wu, W. "Electromagnetic Interference (EMI) as Spark-Ignited Combustion Engines Diagnostic Parameter and Its Wireless Measurement and Wavelet Analysis." Proceedings of the ASME 2002 Internal Combustion Engine Division Fall Technical Conference. Design, Application, Performance and Emissions of Modern Internal Combustion Engine Systems and Components. New Orleans, Louisiana, USA. September 8–11, 2002. pp. 219-223. ASME. https://doi.org/10.1115/ICEF2002-500
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