Title:
Tire decompression state detector
Document Type and Number:
Japanese Patent JP6318117
Kind Code:
B2
Abstract:
Provided is a device for detecting a low-pressure state of a predetermined tire, comprising an index value calculation unit, a resonance frequency calculation unit and a low-pressure detection unit. The index value calculation unit calculates a low-pressure index value from wheel speed information of front and rear tires, the low-pressure index value being obtained by comparing rotation speeds of the front and rear tires. The resonance frequency calculation unit calculates a resonance frequency from wheel speed information of a tire. The low-pressure detection unit eliminates an influence of an imposed load on a vehicle and detects the low-pressure state of the predetermined tire based on: a predetermined parameter that indicates a linear relationship between the resonance frequency and the low-pressure index value under a low-pressure condition of the predetermined tire; the low-pressure index value thus calculated; and the resonance frequency thus calculated.
Inventors:
Kenshita Yamashita
Mitsuhiro Wada
Yusuke Maeda
Mitsuhiro Wada
Yusuke Maeda
Application Number:
JP2015111602A
Publication Date:
April 25, 2018
Filing Date:
June 01, 2015
Export Citation:
Assignee:
Sumitomo Rubber Industries, Ltd.
International Classes:
G01L17/00; B60C23/06
Domestic Patent References:
| JP5538279B2 | ||||
| JP5491453B2 | ||||
| JP3070465B2 | ||||
| JP2005193712A | ||||
| JP2002160512A | ||||
| JP5023188B2 | ||||
| JP4809199B2 | ||||
| JP4633829B2 |
Foreign References:
| US6064931 | ||||
| WO2005005173A1 | ||||
| WO2007054583A1 | ||||
| EP0968892A1 |
Attorney, Agent or Firm:
Tachibana Kenji
Yamada Iichiro
Junya Tanaka
Hiroki Matsui
Yamashita Unknown
Yamada Iichiro
Junya Tanaka
Hiroki Matsui
Yamashita Unknown
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