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SI engine knock detection method robust to resonance frequency changes

Zadnik, Martin and Vincent, François and Vingerhoeds, Robertus and Galtier, Frédéric SI engine knock detection method robust to resonance frequency changes. (2007) In: ICE2007 : 8th International Conference on Engines for Automobile, 16-20 Sep 2007, Naples, Italy .

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Abstract

Knocking combustions in SI gasoline engines manifest characteristic structure-borne vibrations at specific resonant frequencies. Knock detection is normally based on some way of processing of this vibration signal, focusing on one or more spectral peaks. The optimal method of detection requires exact knowledge of the peak positions, which is not available in practice due to different variations. An adapted detector is thus necessary in order to keep a good detection performance even when the resonant frequencies are only known approximatively. We present a detection technique that is robustified with respect to a mismatch between the presumed resonance frequency values and those actually present in the knock sensor signal. Results are illustrated by theoretical performance evaluation as well as by real data application.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Document Number: 2007-24-0054
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Other partners > Siemens VDO Automotive (FRANCE)
Other partners > Association pour le Management des Projets d'Etude et de REcherche - AMPERE (FRANCE)
Laboratory name:
Département d'Electronique, Optronique et Signal - DEOS (Toulouse, France) - Signal, Communication, Antenne et Navigation - SCAN
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Deposited By: Francois VINCENT

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