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Duty cycle monitoring system for an engine

  • US 6,601,442 B1
  • Filed: 09/20/1999
  • Issued: 08/05/2003
  • Est. Priority Date: 09/20/1999
  • Status: Expired due to Term
First Claim
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1. A method for monitoring engine performance comprising the steps of:

  • defining an engine performance curve as a function of two or more engine operating parameters;

    defining in memory a plurality of sectors bounded by the performance curve, each sector corresponding to a range of values for the two or more engine operating parameters;

    during operation of the engine, sensing current data indicative of the two or more engine operating parameters;

    comparing the current data to each of the ranges of values for the two or more engine operating parameters to determine a target sector, the target sector corresponding to one of the plurality of sectors that includes the current data;

    updating in said memory a duty cycle parameter different from the two or more engine operating parameters unique to the target sector; and

    repeating the sensing, comparing and updating steps for a predetermined number of iterations to generate a duty cycle map for the engine, the duty cycle map indicative of cumulative engine operating time spent in each of said plurality of sectors.

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