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Prediction of Knock Sensor Locations with Background Noise
Technical Paper
2005-01-2554
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper presents an analytical approach to predict knock sensor locations with the consideration of background noise in align with current accelerometer based knock detection techniques.
Finite element (FE) based forced frequency response analysis is used to estimate the paths in engine structure for the propagation of dynamic energy generated by both combustion knock pressure and engine background noise sources. The analysis is performed with the consideration of the facts that, within interested frequency range, knock pressure, background noise sources, and even the accuracy of FE simulation, are uncertain or cannot be described precisely. Distributions for both knock sensitivity and CAE signal to noise ratio are obtained as results and used to predict the optimal knock sensor locations. Good correlation with testing results is observed.
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Authors
Citation
Shi, Y., "Prediction of Knock Sensor Locations with Background Noise," SAE Technical Paper 2005-01-2554, 2005, https://doi.org/10.4271/2005-01-2554.Also In
References
- Advantages and Disadvantages of Various Methods of Spark Knock Detection and Control Scholl David Ford Research Laboratory Technical report SRR-2002-0025
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- MY2004 6.8L V10 Knock Sensor Location Optimization AP technical report Zhou Ming Ford Motor Company
- Engine Knock Control via Optimization of Sensor Location SAE paper 951237 Forbes J. W. Caristron K. R. Graessley W. Ford Motor Company
- Detection of Spark Knock Oscillations: Dependence on Combustion Temperature SAE paper 970038 Scholl D. Russ S. Stockhausen W. Ford Motor Company
- Vibration and Sound Morse P. M. Acoustic Society of America
- Engine Knock Detection: Products, Tools, and Emerging Research SAE paper 980522 Wagner J. Keane J. Koseluk R. Whitlock W. Delco Electronics Corporation