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CPS knock detection system

  • US 8,538,666 B2
  • Filed: 06/13/2011
  • Issued: 09/17/2013
  • Est. Priority Date: 06/13/2011
  • Status: Active Grant
First Claim
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1. A control system comprising:

  • a cylinder pressure sensor (CPS) that senses a cylinder pressure of an engine and generates a CPS signal based on the cylinder pressure;

    a CPS failure detection module that selectively generates a failure signal based on characteristics of the CPS signal in a knock frequency range; and

    a status detection module that generates a CPS status signal based on the CPS signal and the failure signal.

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