Patent ID: 7839274
Filing Date: 2010-11-23
Classification: B60C

Abstract:
1. A tire risk judging device of a wheel assembly for a vehicle, comprising: a pressure sensor that detects air pressure of a tire air chamber of the wheel assembly of the vehicle; an air pressure-generating device that supplies pressurized air to the tire air chamber; supply airflow rate computation means for computing a supply airflow rate supplied from the air pressure-generating device to the tire air chamber when the vehicle drives from a present vehicle location to a specified vehicle location on a particular path; leakage airflow rate computation means for computing a leakage airflow rate leaked from the tire air chamber when the vehicle drives from the present vehicle location to the specified vehicle location on the particular path; tire air pressure computation means for computing air pressure of the tire air chamber when the vehicle is located in the specified vehicle location based on air pressure of the tire air chamber when the vehicle is located in the present vehicle location detected by the pressure sensor, the supply airflow rate computed by the supply airflow rate computation means, and the leakage airflow rate computed by the leakage airflow rate computation means; and specified location tire risk judgment means for judging tire risk in the specified vehicle location based on the air pressure of the tire air chamber when the vehicle is located in the specified vehicle location computed by the tire air pressure computation means.