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SYSTEM AND METHOD FOR DETECTING ENGINE EVENTS WITH AN ACOUSTIC SENSOR

  • US 20160370255A1
  • Filed: 04/21/2016
  • Published: 12/22/2016
  • Est. Priority Date: 06/16/2015
  • Status: Abandoned Application
First Claim
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1. A system for detecting engine events comprising:

  • an engine assembly;

    an acoustic emission sensor mounted on the engine assembly and configured to provide a signal indicative of acoustic emissions in the engine assembly during an engine cycle;

    a controller operatively connected to the acoustic emission sensor to receive the signal;

    wherein the controller has a processor configured to execute stored instructions, and is programmed to;

    convert the signal into one or more frequency components;

    filter the signal with a band pass filter to eliminate any of the frequency components outside of a range of frequencies of the band pass filter;

    determine a power value of each of the one or more frequency components within the range of frequencies of the band pass filter;

    compare the power value of each of the one or more frequency components to a reference value associated with acoustic emissions in the engine assembly during a baseline engine cycle; and

    adjust at least one operating parameter of the engine assembly if the power value differs from the reference value by at least a predetermined amount.

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