To provide a tire temperature estimation method and a tire temperature estimation device that can estimate a surface temperature of a tire with good accuracy.SOLUTION: A tire temperature estimation device 100 estimates a surface temperature of a tire 2 of a vehicle 1 by using a processor 10. The processor 10 calculates a heat generation amount of the tire 2 on the basis of longitudinal force and lateral force generated in the tire 2 and a slip velocity of the tire 2, acquires a previous temperature estimation value of the surface temperature, acquires a road surface temperature which is a temperature of a road surface R on which the vehicle 1 travels, acquires any one or both of an ambient temperature and an internal temperature of the tire 2 as an environmental temperature, calculates a first heat radiation amount of the tire on the basis of a temperature difference between the previous temperature estimation value and the road surface temperature, calculates a second heat radiation amount of the tire on the basis of a temperature difference between the previous temperature estimation value and the environmental temperature, then calculates a temperature change amount of the surface temperature on the basis of the heat generation amount, the first heat radiation amount and the second heat radiation amount, and estimates the surface temperature on the basis of the previous temperature estimation value and a temperature change amount.SELECTED DRAWING: Figure 1

    【課題】タイヤの表面温度を精度良く推定できるタイヤ温度推定方法及びタイヤ温度推定装置を提供する。【解決手段】タイヤ温度推定装置100は、プロセッサ10を用いて、車両1のタイヤ2の表面温度を推定し、プロセッサ10は、タイヤ2に発生する前後力及び横力とタイヤ2のスリップ速度とに基づいてタイヤ2の発熱量を算出し、表面温度の前回温度推定値を取得し、車両1が走行する路面Rの温度である路面温度を取得し、外気温度及びタイヤ2の内部温度のいずれか一方又は両方を環境温度として取得し、前回温度推定値と路面温度との温度差に基づいてタイヤの第1放熱量を算出し、前回温度推定値と環境温度との温度差に基づいてタイヤの第2放熱量を算出し、発熱量、第1放熱量及び第2放熱量に基づいて表面温度の温度変化量を算出し、前回温度推定値及び温度変化量に基づいて表面温度を推定する。【選択図】 図1


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    Title :

    TIRE TEMPERATURE ESTIMATION METHOD AND TIRE TEMPERATURE ESTIMATION DEVICE


    Additional title:

    タイヤ温度推定方法及びタイヤ温度推定装置


    Contributors:

    Publication date :

    2024-12-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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