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A New Method to Automatically Optimize the Knock Detection Level in the Knock Control System
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Abstract
A new method of determining the knock detection level, which is very important for KCS, has been developed on the basis of the following statistics. The logarithmic transformed value of the knock sensor signal peak level showed its normal distribution on non-knock conditions, which distribution was, however, diverted to its larger side under knock conditions. The difference of distributions was clarified on the probability paper. The former formed a straight line, while the latter did an broken line with a break point, indicating a frequency of knock occurrence. This break point was employed to obtain the KCS with its optimal knock detection level.
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Citation
Iwata, T., Sakakibara, K., and Haragucti, H., "A New Method to Automatically Optimize the Knock Detection Level in the Knock Control System," SAE Technical Paper 891964, 1989, https://doi.org/10.4271/891964.Also In
References
- Wallace T. F. “Buick's Turbocharged V-6 Powertrain for 1978” SAE Paper 780413 1978
- Honig G. Decker H. Rohde S. “Electronic Spark Control Systems Part 1 : Microcomputer Controlled Ignition System Part II: Bosch Knock Control” SAE Paper 810059 1981
- Kawamura T. Kawai M. Aoki K. Tamaki K. Sugawara M. “Toyota's New Single-Chip Microcomputer Based Engine and Transmission Control System” SAE Paper 850289 1985
- Kaji K. Matsushige S. Kanamaru M. Takahashi J. Asano S. “Development of Knock Sensor” SAE Paper 861375 1986
- Crandall S. H. Karnopp D. C. et al “Random Vibration volume 2” Chapter 1; printed by The M. I. T. Press