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Method and algorithm for predicting leak rates

  • US 6,522,980 B1
  • Filed: 09/22/2000
  • Issued: 02/18/2003
  • Est. Priority Date: 09/22/2000
  • Status: Expired due to Fees
First Claim
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1. A method for calculating system fluid loss from a tire system based on measured fluid loss of a substitute fluid from the tire system, the tire system comprising a tire having structural parameters including a tire inner volume and a tire outer volume, the method comprising the steps of:

  • (a) obtaining data identifying a fluid loss rate of the substitute fluid from the tire system;

    (b) using the data to calculate a rate factor f for the substitute fluid which defines the factor by which the leak rate of the substitute fluid is different from the leak rate of the system fluid;

    (c) using the rate factor f with the gas law equation PV=nRT and the tire structural parameters to calculate the expected tire system fluid loss in the tire system.

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