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Development of a Multi-Sensors Head Gasket for Knock Localization
Technical Paper
2003-01-1117
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In order to determine the area where knock occurs in a single cylinder engine, an acoustic methodology needs a minimum of four simultaneous pressure measurements in the combustion chamber. A specific cylinder head gasket integrating 12 pressure sensors has been developed and tested. The gasket is based on a bonded multilayer technology including high temperature piezoelectric cells, metallic and insulating sheets and printed circuit films. The total thickness is close to 1.25 mm (1/20 inch) and allows a straight forward substitution of the original gasket without modification. The sensors have large frequency bandwidth (typically 3-100 kHz) and withstand severe conditions (heat, combustion, pressure, vibrations, static pre-stress, electromagnetic fields and shocks). Signal processing adaptation of the dedicated exploitation software has brought good success for the single cylinder prototype, which remains operational after 100 hours of extreme conditions running (high knock). The technology is currently under development for multi cylinder industrial engines, with 4 to 8 sensors per cylinder.
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Mazoyer, T., Fayet, P., Castagné, M., and Dumas, J., "Development of a Multi-Sensors Head Gasket for Knock Localization," SAE Technical Paper 2003-01-1117, 2003, https://doi.org/10.4271/2003-01-1117.Also In
References
- Castagné M. Dumas J.-P. Henriot S. Lafossas F.A. Mazoyer Th. “New knock localization methodology for SI engines” SAE 2002 congress Detroit
- Philipp H. Hirsch A. Baumgartner M. Fernitz G. Beidl C. Piock W. Winklhofer E. “Localization of Knock Events in Direct Injection Gasoline Engines” SAE paper 2001_01_1199 2001
- Töpfer G. Reissing J. Weimar H.-J. Spicher U. “Optical Investigation of Knocking Location on S.I.-Engines with Direct-Injection” SAE paper 2000_01_0252 2000