US 11,718,281 B2
Brake control system
Krishnakumar Sornamani, Tamil Nadu (IN)
Assigned to FAIVELEY TRANSPORT RAIL TECHNOLOGIES INDIA PRIVATE LIMITED, Tamil Nadu (IN)
Filed by FAIVELEY TRANSPORT RAIL TECHNOLOGIES INDIA PRIVATE LIMITED, Tamil Nadu (IN)
Filed on Nov. 1, 2021, as Appl. No. 17/516,008.
Claims priority of application No. 202041052369 (IN), filed on Dec. 1, 2020.
Prior Publication US 2022/0185252 A1, Jun. 16, 2022
Int. Cl. B60T 8/94 (2006.01); B60T 8/36 (2006.01); B60T 13/36 (2006.01); B60T 13/68 (2006.01)
CPC B60T 8/94 (2013.01) [B60T 8/3605 (2013.01); B60T 13/365 (2013.01); B60T 13/683 (2013.01); B60T 2270/402 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A brake control system having first and second brake control units that control braking of first and second bogies, respectively, of a railcar upon application of pilot pressures to relay valves by brake control modules of the first and second brake control units, the brake control system comprising:
a bypass conduit configured to connect the brake control modules of the first and second brake control units; and
a fail-safe valve configured to move between an open position and a closed second position,
the fail-safe valve configured to prevent a flow of the pressurized air between the first brake control unit and the second brake control unit via the bypass conduit while the fail-safe valve is in the closed position,
the fail-safe vale configured to allow the flow of the pressurized air between the first brake control unit and the second brake control unit via the bypass conduit while the fail-safe valve is in the open position,
the fail-safe valve configured to provide the pilot pressure to the relay valve of the first brake control unit upon a failure of the first brake control unit and to provide the pilot pressure to the relay valve of the second brake control unit in response to a failure of the second brake control unit.