DocumentCode :
417333
Title :
Pressure reconstruction and misfire detection from multichannel structure-borne sound
Author :
Villarino, Ruben ; Böhme, Johann F.
Author_Institution :
Dept. of Electr. Eng. & Inf. Sci., Ruhr-Univ., Bochum, Germany
Volume :
2
fYear :
2004
fDate :
17-21 May 2004
Abstract :
Though a variety of misfire detection methods exist, the number of approaches based on structure-borne sound is scarce due to its difficult interpretation. The paper presents a procedure for misfire diagnosis that exploits a multichannel sound signal from accelerometers mounted on the surface of an automotive engine. The EM algorithm is used to decompose the measured sound into individual components associated with single combustions. For these simplified scenarios, a statistical test based on the shape of the reconstructed in-cylinder pressure is devised. Measurement data collected from a four cylinder test bed engine is used to validate the proposed approach and show its superiority to the single-channel solution.
Keywords :
accelerometers; acoustic signal processing; automotive components; ignition; internal combustion engines; pressure; accelerometers; automotive engine; misfire detection; misfire diagnosis; multichannel sound signal; multichannel structure-borne sound; pressure reconstruction; Accelerometers; Acoustic sensors; Automotive engineering; Combustion; Engine cylinders; Ignition; Production; Shape; Surface reconstruction; Testing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2004. Proceedings. (ICASSP '04). IEEE International Conference on
ISSN :
1520-6149
Print_ISBN :
0-7803-8484-9
Type :
conf
DOI :
10.1109/ICASSP.2004.1326214
Filename :
1326214
Link To Document :
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