| 摘要 |
PROBLEM TO BE SOLVED: To provide a tire air pressure reduction detection method capable of enhancing accuracy of determination of pressure reduction. SOLUTION: In the tire air pressure reduction detection method, reduction of the tire air pressure is detected based on wheel rotation information obtained from the tire attached to the vehicle. The detection method includes a step for detecting the wheel rotation information of the respective tires; a step for determining the vehicle body speed; a step for determiningng a related value between the wheel speed calculated from the wheel rotation information and the vehicle body speed; a step for determining correlation of the related value and a related information value of the vehicle; a step for comparing the correlation with the correlation at a specified internal pressure; and a step for determining reduction of the air pressure of the tire based on the comparison result. COPYRIGHT: (C)2008,JPO&INPIT
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