Real-time spectral analysis of internal combustion engine knock
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United States of America Patent
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Feb 20, 2007
Grant Date -
Sep 14, 2006
app pub date -
Feb 27, 2006
filing date -
Mar 14, 2005
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Abstract
A system for, and a method of, obtaining, for analysis, from a subject internal combustion engine, real-time engine knock data involving assessing, as a positive indication of engine knock behavior, whether the energy-content value represented in at least one selected, knock-relevant frequency-domain spectral bin which is present in a frequency-domain energy-content spectrum derived from acquired engine operating data of a type expected to contain evidence of engine knock behavior exceeds that of a pre-selected energy threshold value.
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