PROBLEM TO BE SOLVED: To appropriately easily evaluate rolling resistance of a tire at an arbitrary temperature.SOLUTION: When a phase difference (a phase difference between a load imposed on a tire and variations in a position of a drum) is derived relative to a reference tire, in a process in which temperature of the reference tire whose initial temperature is made higher or lower than atmospheric temperature by heating or cooling approaches from the initial temperature to the atmospheric temperature, the phase difference δ at a plurality of temperature within a range from the initial temperature to the atmospheric temperature is derived (S2 to S7 to S9:YES to S7). The phase difference corresponding to the temperature of the tire to be evaluated in the phase difference δ at the plurality of temperature derived for the reference tire and the phase difference derived for the tire to be evaluated are compared to evaluate rolling resistance of the tire to be evaluated.SELECTED DRAWING: Figure 4
【課題】タイヤの任意の温度における転がり抵抗を適切かつ容易に評価する。【解決手段】基準タイヤについて位相差(タイヤに加わる荷重と、ドラムの位置の変動との位相差)を導出するとき、加熱又は冷却によって雰囲気温度よりも高い又は低い初期温度とされた基準タイヤの温度が初期温度から雰囲気温度に近づく過程において、初期温度から雰囲気温度までの範囲内にある複数の温度における位相差δを導出する(S2〜S7〜S9:YES〜S7等)。そして、基準タイヤについて導出した複数の温度における位相差δのうち評価対象となるタイヤの温度に対応する位相差と、評価対象となるタイヤについて導出した位相差とを比較し、評価対象となるタイヤの転がり抵抗を評価する。【選択図】図4
EVALUATION DEVICE AND EVALUATION METHOD FOR ROLLING RESISTANCE OF TIRE
タイヤの転がり抵抗の評価装置及び評価方法
2017-10-19
Patent
Electronic Resource
Japanese
Reference testing method for rolling resistance tire evaluation
Automotive engineering | 2014
|Reference testing method for rolling resistance tire evaluation
Springer Verlag | 2014
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