DEVICE FOR EVALUATING TIRE ROLLING RESISTANCE

Title:

DEVICE FOR EVALUATING TIRE ROLLING RESISTANCE

Document Type and Number:

WIPO Patent Application WO/2018/056005

Kind Code:

A1

Abstract:

Provided is a device for evaluating tire rolling resistance that makes it possible to reduce the capacity of a power source for obtaining excitation amplitude and thereby reduce vibration and fatigue damage of the entire device and of a drum component. The device (10) for evaluating tire rolling resistance is provided with: load rolls (44) having a surface that simulates a road surface on which a tire (2) travels; a movement mechanism (12, 13) for causing the load rolls (44) to move in an alternating manner in a proximity direction approaching the tire (2) and in a separation direction leading away from the tire (2); a load sensor (38); a position sensor (37); a phase difference derivation unit (48) that derives the phase difference of variation in the load and variation in the positions of the load rolls (44) on the basis of signals from the load sensor (38) and the position sensor (37); and a rolling resistance evaluation unit (49) that compares with the phase difference derived by the phase difference derivation unit (48) and evaluates the rolling resistance of the tire to be evaluated. The two or more load rolls (44) are arranged side by side and have a smaller diameter than the tire (2).

Inventors:

OKADA TORU

Application Number:

PCT/JP2017/031149

Publication Date:

March 29, 2018

Filing Date:

August 30, 2017

Export Citation:

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Assignee:

KOBE STEEL LTD (JP)

International Classes:

B60C19/00; G01M17/02

Domestic Patent References:

WO2014038039A1

2014-03-13

Foreign References:

JP2015232545A	2015-12-24
JPH05332887A	1993-12-17
JP2011164012A	2011-08-25
JPS5495401A	1979-07-27
JP2003004598A	2003-01-08
JP2015232545A	2015-12-24
JP2016183371A	2016-09-20

Other References: