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EP-0855319-A2-19980729
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EP-0855319-A2-19980729
A pneumatic trainline control unit receives air from a first pneumatic trainline which it uses to charge and maintain pressure in a second pneumatic trainline. It also provides brake control pressure to a universal pneumatic brake unit (100) on a rail vehicle upon receiving an emergency braking request from the second trainline. The pneumatic trainline control unit (700) includes an air piloted transfer valve (710), an air piloted maintaining valve (713), a charging magnet valve (711), an emergency release magnet valve (712), a low pressure switch (715), an air piloted vent valve (714) and a pipe network. The pipe network allows the first trainline (9) to supply air to the transfer valve, the charging valve and the maintaining valve. The transfer valve features a transfer pilot port. It connects a command port of the pneumatic trainline control unit to atmosphere unless its transfer pilot port receives the emergency braking request in which case it connects the pipe network to the command port. The low pressure switch closes if the second trainline (3) charges to a preset pressure. Upon closure of the pressure switch and a manually initiated command from the controller, the charging valve allows the pipe network to charge the second trainline to a minimum threshold level. The maintaining valve features a main pilot port. It permits the pipe network to keep the second trainline charged unless pressure at its main pilot port falls below the minimum threshold. When pressure in the second trainline drops faster than a predetermined rate, the vent valve vents the second trainline to atmosphere. [image]
A pneumatic trainline control unit receives air from a first pneumatic trainline which it uses to charge and maintain pressure in a second pneumatic trainline. It also provides brake control pressure to a universal pneumatic brake unit (100) on a rail vehicle upon receiving an emergency braking request from the second trainline. The pneumatic trainline control unit (700) includes an air piloted transfer valve (710), an air piloted maintaining valve (713), a charging magnet valve (711), an emergency release magnet valve (712), a low pressure switch (715), an air piloted vent valve (714) and a pipe network. The pipe network allows the first trainline (9) to supply air to the transfer valve, the charging valve and the maintaining valve. The transfer valve features a transfer pilot port. It connects a command port of the pneumatic trainline control unit to atmosphere unless its transfer pilot port receives the emergency braking request in which case it connects the pipe network to the command port. The low pressure switch closes if the second trainline (3) charges to a preset pressure. Upon closure of the pressure switch and a manually initiated command from the controller, the charging valve allows the pipe network to charge the second trainline to a minimum threshold level. The maintaining valve features a main pilot port. It permits the pipe network to keep the second trainline charged unless pressure at its main pilot port falls below the minimum threshold. When pressure in the second trainline drops faster than a predetermined rate, the vent valve vents the second trainline to atmosphere. [image]
en
European Patent Office
EP0855319
EP 0855319
B60T 13/66
Pneumatic trainline control unit
Pneumatic trainline control unit - European Patent Office - EP 0855319 A2
Pneumatic trainline control unit - European Patent Office - EP 0855319 A2
EUROPEAN PATENT APPLICATION
Adobe PDF Library 8.0
"EP0855319"; "EP 0855319"; "B60T 13/66"; "Pneumatic trainline control unit"
1.4
1
B
17
EP
0855319
A2
1998-07-29
98100800.6
1998-01-19
US
789920
1997-01-28
B60T 13/66 A
WESTINGHOUSE AIR BRAKE COMPANY
Wood, James A.
Mazur, Richard J.
Petri, Stellan
Pneumatic trainline control unit
Steuereinheit einer Druckluft-Zugbremsleitung
Pneumatic trainline control unit
Unité de commande d'une conduite de frein ferroviaire
A pneumatic trainline control unit receives air from a first pneumatic trainline which it uses to charge and maintain pressure in a second pneumatic trainline. It also provides brake control pressure to a universal pneumatic brake unit (100) on a rail vehicle upon receiving an emergency braking request from the second trainline. The pneumatic trainline control unit (700) includes an air piloted transfer valve (710), an air piloted maintaining valve (713), a charging magnet valve (711), an emergency release magnet valve (712), a low pressure switch (715), an air piloted vent valve (714) and a pipe network. The pipe network allows the first trainline (9) to supply air to the transfer valve, the charging valve and the maintaining valve. The transfer valve features a transfer pilot port. It connects a command port of the pneumatic trainline control unit to atmosphere unless its transfer pilot port receives the emergency braking request in which case it connects the pipe network to the command port. The low pressure switch closes if the second trainline (3) charges to a preset pressure. Upon closure of the pressure switch and a manually initiated command from the controller, the charging valve allows the pipe network to charge the second trainline to a minimum threshold level. The maintaining valve features a main pilot port. It permits the pipe network to keep the second trainline charged unless pressure at its main pilot port falls below the minimum threshold. When pressure in the second trainline drops faster than a predetermined rate, the vent valve vents the second trainline to atmosphere. [image]
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