PROBLEM TO BE SOLVED: To provide a vehicle brake system and a brake fade detection method capable of improving detection accuracy for a brake fade state.SOLUTION: A vehicle brake system used in a vehicle including a motor 200 as a running power source, comprises: brake-force-target-value calculation means 151 calculating a target value of a friction brake force from a brake fluid pressure at a time of restricting actuation of regenerative brake means; brake-force-estimated-value calculation means 152 calculating an estimated value of the friction brake force from a vehicle resistance including a gradient resistance, a running resistance, and an acceleration resistance at the time of restricting the actuation of the regenerative brake means; and determination means 153 determining a brake fade state if a difference obtained by subtracting the estimated value of the friction brake force from the target value of the friction brake force is equal to or greater than a predetermine value.

    【課題】ブレーキフェード状態の検知精度を高めることができる車両用ブレーキシステムおよびブレーキフェード検知方法を提供する。【解決手段】電動機200を走行用の動力源として備える車両において用いられる車両用ブレーキシステムは、回生ブレーキ手段の作動の制限時に、ブレーキ液圧から摩擦制動力の目標値を算出する制動力目標値算出手段151と、回生ブレーキ手段の作動の制限時に、勾配抵抗、走行抵抗、および加速抵抗を含む車両抵抗から摩擦制動力の推定値を算出する制動力推定値算出手段152と、前記摩擦制動力の目標値から前記摩擦制動力の推定値を差し引いた差が所定値以上となった場合に、ブレーキフェード状態であると判定する判定手段153と、を有している。【選択図】図2


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    Title :

    VEHICLE BRAKE SYSTEM AND BRAKE FADE DETECTION METHOD


    Additional title:

    車両用ブレーキシステムおよびブレーキフェード検知方法


    Contributors:

    Publication date :

    2016-01-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF



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