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Systems and methods for engine knock sensor rationality check

  • US 10,323,618 B1
  • Filed: 01/05/2018
  • Issued: 06/18/2019
  • Est. Priority Date: 01/05/2018
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • via a controller,responsive to an indication of a knock event from a knock sensor coupled to an engine propelling a vehicle, correlating output of the knock sensor with output of a microphone on-board the vehicle to determine degradation of the knock sensor; and

    providing an alert to a vehicle operator responsive to determining degradation of the knock sensor.

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