DIAGNOSTIC SYSTEMS AND METHODS FOR ENGINE KNOCK SENSORS

An engine control system includes a digital signal processing (DSP) module that generates a fast Fourier transform (FFT) of an engine knock signal generated by an engine knock sensor. An intensity determination module determines an engine knock intensity based on one of a maximum of and an average o...

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Bibliographic Details
Main Authors ESFAHAN HAMID M, HAMAMA WAJDI B, HORNER ROBERT J, SAWDON CRAIG M, FERCH ERIC
Format Patent
LanguageEnglish
Published 01.07.2010
Subjects
BLASTING
CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
WEAPONS
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Summary:An engine control system includes a digital signal processing (DSP) module that generates a fast Fourier transform (FFT) of an engine knock signal generated by an engine knock sensor. An intensity determination module determines an engine knock intensity based on one of a maximum of and an average of the FFT. A status determination module determines a status of the engine knock sensor based on the engine knock intensity, a plurality of predetermined knock intensity thresholds, and a rotational speed of an engine crankshaft.
Bibliography:Application Number: US20090391479