发明名称 |
Method and apparatus for detecting decrease in tire-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. <IMAGE> |
申请公布号 |
EP1352765(A3) |
申请公布日期 |
2004.01.07 |
申请号 |
EP20030007041 |
申请日期 |
2003.03.27 |
申请人 |
SUMITOMO RUBBER INDUSTRIES LTD. |
发明人 |
OSHIRO, YUJI |
分类号 |
B60C23/06;G01L17/00;G01P15/18 |
主分类号 |
B60C23/06 |
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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