Invention Application
- Patent Title: DEVICE AND METHOD FOR EVALUATING ROLLING RESISTANCE OF TIRE
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Application No.: US16091843Application Date: 2017-04-10
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Publication No.: US20190086292A1Publication Date: 2019-03-21
- Inventor: Toru OKADA
- Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
- Applicant Address: JP Hyogo
- Assignee: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
- Current Assignee: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)
- Current Assignee Address: JP Hyogo
- Priority: JP2016-082199 20160415
- International Application: PCT/JP2017/014720 WO 20170410
- Main IPC: G01M17/02
- IPC: G01M17/02

Abstract:
Rolling resistance is appropriately and easily evaluated at an arbitrary temperature of a tire. When a phase difference between a load applied to the tire and a variation in position of the drum is derived for a reference tire, the phase differences δ are derived at a plurality of temperatures within a range from an initial temperature to an atmospheric temperature in a process in which a temperature of the reference tire that reached the initial temperature higher or lower than the atmospheric temperature by heating or cooling approaches the atmospheric temperature from the initial temperature. The phase difference corresponding to a temperature of a tire to be evaluated among the phase differences δ derived for the reference tire at the plurality of temperatures and the phase difference derived for the tire to be evaluated are compared, thereby evaluating rolling resistance of the tire to be evaluated.
Information query