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VARIABLE OIL PUMP DIAGNOSTIC

  • US 20130192545A1
  • Filed: 01/31/2012
  • Published: 08/01/2013
  • Est. Priority Date: 01/31/2012
  • Status: Active Grant
First Claim
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1. An engine method, comprising:

  • indicating degradation of a piston-cooling jet system in response to a relationship between engine speed and oil pressure at maximum oil pump displacement conditions.

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