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Old 06-10-2012, 08:20 PM   #5 (permalink)
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Join Date: Dec 2007
Location: Southern California
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1999 Saturn SW2 - '99 Saturn SW2 Wagon
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Hello -

I went here :

knock sensor questions - SaturnFans Forums

And found this :

Knock Control Using Fuzzy Logic
Internal combustion engine ignition timing is adjusted in response to a sensed knock condition and in response to a determination of engine knock propensity through application of fuzzy logic, wherein an inference engine comprised of a predetermined knowledge rulebase generates a set of truths in response to application of a set of input signals from a set of membership functions. The set of truths are combined according to both relative and absolute strength in indicating engine knock propensity.

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