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Knocking determination apparatus for internal combustion engine

  • US 20050098156A1
  • Filed: 11/08/2004
  • Published: 05/12/2005
  • Est. Priority Date: 11/12/2003
  • Status: Active Grant
First Claim
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1. An apparatus for determining whether or not knocking has occurred in an internal combustion engine, the internal combustion engine including a first injector for directly injecting fuel into a combustion chamber, a second injector for injecting fuel into an intake system, and a knock sensor for detecting information relating to knocking and generating an output signal, the apparatus comprising:

  • a knocking determination means for determining whether or not knocking has occurred based on the output signal of the knock sensor during a knock determination period; and

    an altering means for altering the knock determination period in accordance with a ratio between the amount of fuel the first injector injects and the amount of fuel the second injector injects.

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