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公开(公告)号：US12084032B2
公开(公告)日：2024-09-10
申请号：US17275656
申请日：2019-09-11
发明人： Ben Druett , Mark Hemmings , Nigel Anstey , Justin Peare
CPC分类号： B60T8/3605 , B60T8/1705 , B60T8/94 , B60T13/683 , B60T15/027 , B60T15/52 , B60T17/221 , B60T17/228 , B60T2270/402 , B60T2270/406 , B60T2270/413
摘要： A brake control valve arrangement for controlling application of a braking force includes an electro-pneumatic brake control valve block including a hold valve and a vent valve (PRESSURE CONTROLLER), a main regulator valve (RELAY VALVE) and an emergency and a variable load control pressure regulator. The valve block has an inlet for a brake supply pressure, and an outlet in pneumatic connection with a brake cylinder. A pilot pressure into the main regulator valve from the variable load control pressure regulator is controlled by a remote release solenoid valve (CONTROL CHAMBER VENT MAGNET VALVE). The remote release solenoid valve adapted to vent brake cylinder pressure to atmosphere when de-energized thereby enabling release of the wheel braking force via the main regulator valve.
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公开(公告)号：US12065120B2
公开(公告)日：2024-08-20
申请号：US17275652
申请日：2019-09-10
发明人： Nigel Anstey , Ben Druett , Mark Hemmings , Justin Peare
IPC分类号： B60T8/94 , B60T8/17 , B60T8/18 , B60T8/32 , B60T13/66 , B60T13/68 , B60T15/02 , B60T15/20 , B60T17/22
CPC分类号： B60T8/94 , B60T8/1705 , B60T8/1893 , B60T8/3235 , B60T13/665 , B60T13/683 , B60T15/021 , B60T15/027 , B60T15/20 , B60T17/221 , B60T2270/402 , B60T2270/413 , B60T2270/88
摘要： An electropneumatic rail brake system configured to provide emergency braking including an emergency magnet valve which controls air flow into an emergency regulator valve, which valve has an emergency back-up chamber. The emergency regulator provides an output pressure nominally equal to the variable load pressure and no lower than the tare back-up. The magnet valve is closed when energized and when de-energized, pressure is allowed into the emergency back-up chamber, Regulation of the brake cylinder pressure continues during an emergency application such that the brake cylinder pressure applied during an emergency stop does not drop below a predetermined level. In the event of power-loss during an emergency brake stop, the nominal emergency brake pressure is applied to the brake cylinders.
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公开(公告)号：US11673539B2
公开(公告)日：2023-06-13
申请号：US17275349
申请日：2019-09-11
发明人： Mark Hemmings , Nigel Anstey , Justin Peare
CPC分类号： B60T8/3605 , B60T8/1705 , B60T13/683 , B60T15/027 , B60T15/52
摘要： A pressure equalization valve arrangement for a rail brake system includes a hold valve and a membrane vent valve each having a control chamber. The hold valve and vent valve are piloted by a respective solenoid valve. A further solenoid valve is connected to the control chamber of the vent valve to allow the pressure across the vent valve membrane to be equalized with the brake cylinder pressure to decrease the pressure difference across the membrane. This results in an improved vent time.
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