发明名称 |
Method and apparatus for detecting decrease in tire air-pressure, and program for judging decompression of tire |
摘要 |
A method for detecting decrease in tire air-pressure in which decrease in internal pressure of a tire is detected on the basis of rotational information obtained from tires attached to a vehicle. The method includes the steps of; detecting and storing rotational information of the respective tires; calculating and storing a slip rate; calculating and storing a correction coefficient for correcting a difference in effective rolling radii owing to initial differences between right and left front tires, a correction coefficient between right and left rear tires and a correction coefficient between front tires and rear tires; comparing a correction coefficient between front tires and rear tires with a correction coefficient between the front tires and the rear tires preliminarily obtained when at normal internal pressure; and judging simultaneous decompression of two wheel tires of both front wheels or simultaneous decompression of two wheel tires of both rear wheels on the basis of a relationship between a value obtained through comparison of the two correction coefficients and a specified threshold.
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申请公布号 |
US6804623(B2) |
申请公布日期 |
2004.10.12 |
申请号 |
US20030404426 |
申请日期 |
2003.04.02 |
申请人 |
SUMITOMO RUBBER INDUSTRIES, INC. |
发明人 |
OSHIRO YUJI |
分类号 |
G01P15/18;B60C23/06;G01L17/00;(IPC1-7):G06F15/00;B60C23/00 |
主分类号 |
G01P15/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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