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Crankcase integrity breach detection

  • US 9,260,990 B2
  • Filed: 09/14/2012
  • Issued: 02/16/2016
  • Est. Priority Date: 09/14/2012
  • Status: Active Grant
First Claim
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1. A method for an engine, comprising:

  • measuring pressure in a crankcase vent tube with a pressure sensor arranged therein; and

    with a controller, determining whether an intake air filter is degraded based on the measured crankcase vent tube pressure and setting a diagnostic code if the intake air filter is degraded.

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