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Method and system for monitoring the level of oil contained in a tank of an aircraft engine

  • US 9,540,974 B2
  • Filed: 04/14/2011
  • Issued: 01/10/2017
  • Est. Priority Date: 04/19/2010
  • Status: Active Grant
First Claim
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1. A method of monitoring a level of oil contained in a tank of an aircraft engine, the method comprising:

  • for at least two predetermined operating stages of the engine, during at least one mission of the aircraft;

    measuring, by an oil level sensor, a plurality of measurements of an oil level of the tank,measuring an oil temperature and an engine speed of rotation associated with each measurement of the oil level of the tank,storing, in a memory of a first computer, the measurements of the oil level of the tank and the associated oil temperature and associated engine speed of rotation, andselecting, using the first computer, measurements representative of oil level variations having both oil temperatures that are within a predetermined range of a reference temperature and engine speeds of rotation that are within a predetermined range of a reference speed of rotation corresponding to an iso-condition;

    aggregating, using a second computer, only the measurements corresponding to the iso-condition selected over the operating stages during the at least one mission of the aircraft to produce a curve of the oil level of the tank; and

    comparing, using the second computer, the curve produced by the aggregated measurements with reference data to identify abnormal oil consumption of the engine.

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