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FEM Approximation of Internal Combustion Chambers for Knock Investigations
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 04, 2002 by SAE International in United States
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The resonances of SI engine combustion chambers are slightly excited during normal combustion but strongly excited by knock. In order to avoid knocking combustions extensive knowledge about knock and its effects is necessary. In this paper the combustion chamber of a serial production engine is modeled by finite elements. Modal analyses are performed in order to gain information about the resonances, their frequencies, and their frequency and amplitude modulations. Simulation results are compared to measured data using a high-resolution time-frequency method. Furthermore, a connection between knock origin and the excitation of the resonances is postulated applying transient analyses.
CitationCarstens-Behrens, S., Urlaub, M., Böhme, J., Förster, J. et al., "FEM Approximation of Internal Combustion Chambers for Knock Investigations," SAE Technical Paper 2002-01-0237, 2002, https://doi.org/10.4271/2002-01-0237.
- Draper, C. S. “Pressure Wave Accompanying Detonation in the Internal Combustion Engine” Journal of the Aeronautic Sciences 5 6 219 226 1938
- Hickling, R. Feldmaier, D. A. Chen, F. H. K. Morel, J. S. “Cavity Resonances in Engine Combustion Chambers and Some Applications” J. Acoust. Soc. Am. 73 4 1170 1178 1983
- Scholl, D. Davis, C. Russ, S. Barash, T. “The Volume Acoustic Modes of Spark-Ignited Internal Combustion Chambers” SAE Paper 980893 1998
- Martin, W. Flandrin, P. “Wigner-Ville-Spectral Analysis of Nonstationary Processes” IEEE Trans. on ASSP 33 6 1461 1470 1985
- Böhme, J. F. König, D. “Statistical Processing of Car Engine Signals for Combustion Diagnosis” Proc. IEEE 7 th Workshop on Statistical Signal and Array Processing 369 374 1994