| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for warning pneumatic pressure drop of tire capable of preventing any improper information, and improving the determination accuracy of the pneumatic pressure drop. SOLUTION: The method includes a step of detecting information on the rotation of each tire, a step of storing information on the rotation of each tire, a kind display step of displaying the kind of a summer tire, a winter tire and a run-flat tire, a step of designating the presently fitted tire out of the displayed tires, and changing the tire internal pressure to the threshold for determining the drop of the tire internal pressure, a step of determining any drop of the tire pneumatic pressure using the threshold, and a step of giving an alarm based on the determination of the determination means. The kind display step of displaying the kind of the summer tire, the winter tire and the run-flat tire can be displayed and operated by a touch panel of a navigation device. COPYRIGHT: (C)2007,JPO&INPIT
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