Patent ID: 7197922
Filing Date: 2007-04-03
Classification: B60C

Abstract:
1. A method for detecting a tire rotation event for a first front tire and a second front tire of a vehicle and a first rear tire and a second rear tire of the vehicle, comprising: measuring a first temperature of the first front tire, a first temperature of the second front tire, a first temperature of the first rear tire, and a first temperature of the second rear tire; determining a first front average temperature (FAT) based on said first temperature of the first front tire and said first temperature of the second front tire; determining a first rear average temperature (RAT) based on said first temperature of the first rear tire and said first temperature of the second rear tire; calculating a first ratio of said first FAT to said first RAT; measuring a second temperature of the first front tire, a second temperature of the second front tire, a second temperature of the first rear tire, and a second temperature of the second rear tire; determining a second FAT based on said second temperature of the first front tire and said second temperature of the second front tire after said determining said first FAT; determining a second RAT based on said second temperature of the first rear tire and said second temperature of the second rear tire after said determining said first RAT; calculating a second ratio of said second FAT to said second RAT; identifying the tire rotation event based at least in part upon a comparison of said first ratio and said second ratio.