Invention Grant
- Patent Title: Device for detecting low-pressure state of tire
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Application No.: US15169122Application Date: 2016-05-31
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Publication No.: US10336142B2Publication Date: 2019-07-02
- Inventor: Kento Yamashita , Mitsuhiro Wada , Yusuke Maeda
- Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
- Applicant Address: JP Kobe-Shi, Hyogo
- Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
- Current Assignee Address: JP Kobe-Shi, Hyogo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2015-111602 20150601
- Main IPC: B60C23/00
- IPC: B60C23/00 ; B60C19/00 ; B60Q9/00 ; B60C23/06

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.
Public/Granted literature
- US20160347129A1 DEVICE FOR DETECTING LOW-PRESSURE STATE OF TIRE Public/Granted day:2016-12-01
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