The invention relates to a fail-safe valve unit (1) for a parking brake function (8) of an electronically controllable pneumatic brake system (204) of a commercial vehicle (202), comprising a monostable release valve (2) and an exhaust valve (4). The release valve (2) provides a release pressure (pL) for the parking brake function (8) at the first release valve connection (2.1) in the case of energization and connects the first release valve connection (2.1) to the exhaust valve (4) in the case of no current. The exhaust valve (4) has a non-linear exhaust characteristic (E) that allows the first release valve connection (2.1) to exhaust from the release pressure (pL) to the partial brake pressure (pLT) at a first gradient (G1) and allows the first release valve connection (2.1) to exhaust from the partial brake pressure (pLT) to the full brake pressure (pLV) at a second gradient (G2), the first gradient (G1) being greater than the second gradient (G2). In addition, the parking brake module and the vehicle are also parts of the invention.

    本发明涉及用于商用车辆(202)的能电子控制的气动制动系统(204)的驻车制动功能部(8)的防失效阀单元(1),防失效阀单元具有单稳态的释放阀(2)和排气阀(4)。释放阀(2)在通电情况下在第一释放阀接口(2.1)处提供释放压力(pL)用于驻车制动功能部(8)并且在无电流的情况下将第一释放阀接口(2.1)与排气阀(4)连接起来。排气阀(4)具有非线性排气特性(E),非线性排气特性允许第一释放阀接口(2.1)以第一梯度(G1)从释放压力(pL)排气到部分制动压力(pLT),并且允许以第二梯度(G2)从部分制动压力(pLT)排气到全制动压力(pLV),其中,第一梯度(G1)大于第二梯度(G2)。此外,驻车制动模块和车辆也是本发明的部分。


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    Title :

    Failure-preventing valve unit for parking brake function and parking brake valve arrangement


    Additional title:

    用于驻车制动功能部的防失效阀单元以及驻车制动阀设施


    Contributors:

    Publication date :

    2022-07-15


    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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