Method for detecting knocking combustion in the operation of an internal combustion engine
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United States of America Patent
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Dec 2, 2003
Grant Date -
Feb 7, 2002
app pub date -
Jun 27, 2001
filing date -
Jul 5, 2000
priority date (Note) -
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Abstract
In a method for detecting knocking combustion during the operation of an internal combustion engine with a device for measuring the ionic current, the raw ionic current signal or the evaluated value of the knocking intensity are normalized. This enables the value of the knocking intensity to be reliably compared with a threshold value. The normalization avoids the falsifying influence of large intensity fluctuations of the raw ionic current signal from one combustion cycle to the next without any relation to the true knocking intensity.
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