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Peak Pressure Position Estimation from Structure-Borne Sound
Technical Paper
2005-01-0040
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Combustion control strategies based on the peak pressure position (PPP) can be used to optimize the engine efficiency in a torque producing sense. Though the methods are easy to implement, the direct acquisition of the in-cylinder pressure requires sensors that are expensive and have a reduced lifetime. This paper addresses the problem of obtaining reliable PPP estimates with structure-borne sound signals from accelerometers mounted on the engine's surface. Measurement data collected from a four cylinder SI test bed engine are used to validate the proposed approach. It is observed that, compared to the amplitude, the position of the pressure maximum can be robustly estimated with moderate sampling rates. The results are improved by combining several accelerometers into a multichannel signal.
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Citation
Villarino, R. and Böhme, J., "Peak Pressure Position Estimation from Structure-Borne Sound," SAE Technical Paper 2005-01-0040, 2005, https://doi.org/10.4271/2005-01-0040.Also In
References
- Powell J. D. “Engine control using cylinder pressure: Past, present and future,” Journal of Dynamic Systems, Measurement and Control 115 343 359 Juni 1993
- Eriksson L. “Spark advance for optimal efficiency,” SAE Technical Paper 1999-01-0209 1999
- Guezennec Y. G. Gyan P. “A novel approach to real-time estimation of the individual cylinder combustion pressure for s.i. engine control,” SAE Technical Paper 1999-01-0209 1999
- Larsson S. Schagerberg S. “Si-engine cylinder pressure estimation using torque sensors,” SAE Technical Paper 2004-01-1369 2004
- Eriksson L. Nielsen L. Glavenius M. “Closed loop ignition control by ionization current interpretation,” SAE Technical Paper 970854 1999
- Azzoni P. “Reconstruction of indicated pressure waveform in a spark-ignition engine from block vibrations measurements,” Trans. of the ASME 119 614 619 December 1997
- Antoni J. Daniere J. Guillet F. Randall R. B. “Effective vibration analysis of IC engines using cyclostationarity. Part II - New results on the reconstruction of the cylinder pressures,” Journal of Sound and Vibration 257 5 839 856 2002
- Villarino R. Böhme J. F. “Misfire detection in automotive engines using structure-borne sound,” SAE Technical Paper 2004-01-0520 2004
- Schagerberg S. McKelvey T. “Instantaneous crankshaft torque measurements - modeling and validation,” SAE Technical Paper 2003-01-0713 2003
- Wagner M. Böhme J. F. Förster J. “In-cylinder pressure estimation from structure-borne sound,” SAE Technical Paper 2000-01-0930 2000
- Villarino R. Böhme J. “Fast in-cylinder pressure reconstruction from structure-borne sound using the EM algorithm,” Proc. ICASSP'03 6 597 600 April 2003
- Dempster A. Laird N. Rubin D. “Maximum likelihood from incomplete data via the EM algorithm (with discussion),” J. Roy. Statist. Soc. Ser. 8 1 38 1977
- Feder M. Weinstein E. “Parameter estimation of superimposed signals using the EM algorithm,” IEEE Trans. Acoust., Speech, Sig. Proc. 36 477 489 April 1988
- Villarino R. Böhme J. F. “Pressure reconstruction and misfire detection from multichannel structure-borne sound,” Proc. ICASSP'04 2 141 144 May 2004
- Gatowski J. A. Balles E. N. Chun K. M. Nelson F. E. Ekchian J. A. Heywood J. B. “Heat release analysis of engine pressure data,” SAE Technical Paper 841359 1984
- Eriksson L. Andersson I. “An analytic model for cylinder pressure in a four stroke si-engine,” SAE Technical Paper 2002-01-0371 2002
- Hamedović H. Raichle F. Breuninger J. Fischer W. Dieterle W. Klenk M. Böhme J. F. “Imep estimation and in-cylinder pressure reconstruction for multi-cylinder si-engine by combined processing of engine speed and one cylinder pressure,” SAE Technical Paper 2005-01-0053 2005