The invention provides a hydraulic pressure control unit, a brake system and a diagnosis method capable of properly diagnosing abnormality of a power supply line. The hydraulic control unit (5) is provided with: a hydraulic control mechanism including a filling valve (31) which is an electromagnetic valve electrically connected to a power source (7) via a power line (8); a control device (52) for controlling the operation of the hydraulic control mechanism; and a resistor (35) electrically connected to the power supply (7) via the power supply line (8). A diagnosis unit of the control device (52) performs a power supply line diagnosis for diagnosing an abnormality in the power supply line (8) on the basis of a change in the voltage of the power supply line (8) when the current applied to the resistor (35) is changed, in a state in which the current is not applied to the filling valve (31) and the current is applied to the resistor (35).

    本发明得到能够适当地诊断电源线的异常的液压控制单元、制动系统及诊断方法。液压控制单元(5)具备:液压控制机构,包括填充阀(31),所述填充阀(31)是经由电源线(8)与电源(7)电连接的电磁阀;控制装置(52),控制液压控制机构的动作;以及电阻(35),经由电源线(8)与电源(7)电连接;控制装置(52)的诊断部在不使电流施加于填充阀(31)而使电流施加于电阻(35)的状态下,基于使施加于电阻(35)的电流变化时的电源线(8)的电压变化,进行诊断电源线(8)的异常的电源线诊断。


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    Title :

    Hydraulic control unit, brake system, and diagnostic method


    Additional title:

    液压控制单元、制动系统及诊断方法


    Contributors:

    Publication date :

    2025-05-30


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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