The invention relates to a parking brake module with a relay valve and a safety piston. The parking brake module (1) comprises a relay valve unit (17) for providing a brake release pressure (pBR) to the working port (7) and a safety unit (19) for connecting the working port (7) to the exhaust port (9). The relay valve unit (17) comprises a relay piston (25) wherein the working port (7) is in fluid communication with the exhaust port (9) when the relay piston (25) is in the exhaust position (29). The relay piston (25) is slidable independently of the safety piston (54) of the safety unit (19) when the safety piston (54) is in the neutral position (75), and the relay piston (25) is locked in the exhaust position (29) when the safety piston (54) is in the safety position (77). The invention also relates to a method (300) for controlling a parking brake function, a brake system (100) and a commercial vehicle (202).
本发明涉及一种带有中继阀和安全活塞的驻车制动模块。驻车制动模块(1)包括中继阀单元(17)和安全单元(19),中继阀单元用于向工作端口(7)提供制动释放压力(pBR),并且安全单元用于将工作端口(7)连接到排气口(9)。中继阀单元(17)包括中继活塞(25),其中当该中继活塞(25)处于排气位置(29)中时,工作端口(7)与排气口(9)流体连通。当安全活塞(54)处于中性位置(75)中时,中继活塞(25)能够独立于安全单元(19)的安全活塞(54)滑动,且当安全活塞(54)处于安全位置(77)中时,中继活塞(25)锁定在排气位置(29)中。本发明还涉及一种用于控制驻车制动功能的方法(300)、制动系统(100)以及商用车辆(202)。
Parking brake module with relay valve and safety piston
带有中继阀和安全活塞的驻车制动模块
2024-02-23
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
FAIL-SAFETY VALVE UNIT FOR A PARKING BRAKE FUNCTION AND PARKING BRAKE VALVE ARRANGEMENT
European Patent Office | 2022
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