METHOD TO REDUCE ENGINE COMBUSTION AND HARMONIC NOISE FOR MISFIRE DETECTION

A method and system for determining combustion and harmonic noise correction factors for current operating conditions corresponding to the actual vehicle and applying the combustion and harmonic noise correction factors to a sensor signal, thereby removing engine combustion and harmonic noise from t...

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Bibliographische Detailangaben
Hauptverfasser: LYNCH MARVIN L, GERLACH KEITH, GILBERT RICHARD JOHN, QIAO NINSHENG
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method and system for determining combustion and harmonic noise correction factors for current operating conditions corresponding to the actual vehicle and applying the combustion and harmonic noise correction factors to a sensor signal, thereby removing engine combustion and harmonic noise from the sensor signal and leaving a misfire data signal in the sensor signal.