Abstract: The invention relates to a brake control system (100) comprising a controller (102) receiving input indicating a directed change in a brake setting for a vehicle system (200), and brake units (108, 110, 114, 116, 118) onboard different ones of vehicles (204, 206) in the vehicle system. The brake units include electronic modules (108-1, 110-1, 114-1, 116-1, 118-1) and pneumatic modules (108-2, 110-2, 114-2, 116-2, 118-2). The pneumatic modules may be controlled by the electronic modules to control braking of the vehicles. The controller sends signals to the electronic modules based on the input and determines an inoperative state of a first electronic module of the brake units that is onboard a first vehicle of the vehicles and can direct a different, second electronic module of the brake units that is onboard the first vehicle or a second vehicle of the vehicles to control the brake unit of the first vehicle responsive to determining the inoperative state of the first electronic module.

Abstract: A brake control system includes first and second brake control units for controlling braking of first and second bogies of a rail car. The brake control units include relay valves for controlling pressurized air flow from a main reservoir to brake cylinder pipes. A bypass conduit connects an outlet of a first brake control module to an outlet of a second brake control module. A fail-safe valve moves between open and closed positions. In the closed position, the fail-safe valve prevents a flow of the pressurized air between the brake control units. The fail-safe valve provides a first pilot pressure to a first relay valve upon a failure of the first brake control unit and provides a third pilot pressure to the second relay valve in response to a failure of the second brake control unit.

Abstract: A brake control system includes first and second brake control units for controlling braking of first and second bogies of a rail car. The brake control units include relay valves for controlling pressurized air flow from a main reservoir to brake cylinder pipes. A bypass conduit connects an outlet of a first brake control module to an outlet of a second brake control module. A fail-safe valve moves between open and closed positions. In the closed position, the fail-safe valve prevents a flow of the pressurized air between the brake control units. The fail-safe valve provides a first pilot pressure to a first relay valve upon a failure of the first brake control unit and provides a third pilot pressure to the second relay valve in response to a failure of the second brake control unit.