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METHODS AND SYSTEM FOR DIAGNOSING AN ENGINE COMPONENT BASED ON AN ENGINE SPEED PROFILE DURING AN ENGINE SHUTDOWN EVENT

  • US 20180080404A1
  • Filed: 09/16/2016
  • Published: 03/22/2018
  • Est. Priority Date: 09/16/2016
  • Status: Active Grant
First Claim
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1. A method for an engine, comprising:

  • measuring an engine speed drop rate, via an engine speed sensor, during an engine shutdown event; and

    indicating a change in performance of one of the engine speed sensor or an additional engine component in response to the measured engine speed drop rate deviating from a reference engine speed drop rate by a threshold rate.

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