Abstract: A vehicle braking calibration system and related method includes a valve fluidly coupled with a vehicle braking system of a vehicle. The valve is configured to move between an open position and a closed position to control an amount of a fluid that is directed out of the braking system. A sensor detects one or more characteristics of the fluid that is directed out of the braking system. A controller determines a state of the braking system based on the one or more characteristics of the fluid.

Abstract: A vehicle braking calibration system and related method includes a valve fluidly coupled with a vehicle braking system of a vehicle. The valve is configured to move between an open position and a closed position to control an amount of a fluid that is directed out of the braking system. A sensor detects one or more characteristics of the fluid that is directed out of the braking system. A controller determines a state of the braking system based on the one or more characteristics of the fluid.

Abstract: A braking control system for a vehicle system includes a control chamber configured to control air pressure of a brake pipe of the vehicle system. The system also includes first and second charge valves and first and second vent valves. The first charge valve and the first vent valve are controllable to vent or charge the brake pipe, and the second charge valve and the second vent valve are separately controllable for the same purpose. The system also includes a controller configured to switch operation of the vehicle system between a first operation mode, where the first charge valve and the first vent valve are enabled, and a second operation mode, where the second charge valve and the second vent valve are enabled, in response to an input.

Abstract: A braking control system for a vehicle system includes a control chamber configured to control air pressure of a brake pipe of the vehicle system. The system also includes first and second charge valves and first and second vent valves. The first charge valve and the first vent valve are controllable to vent or charge the brake pipe, and the second charge valve and the second vent valve are separately controllable for the same purpose. The system also includes a controller configured to switch operation of the vehicle system between a first operation mode, where the first charge valve and the first vent valve are enabled, and a second operation mode, where the second charge valve and the second vent valve are enabled, in response to an input.

Abstract: Disclosed is an automatic brake backup control system and method for a train equipped with an electronic airbrake system and including at least one locomotive, a brake pipe, a source of control pressure, and at least one brake. The system includes a pneumatic operating unit that includes a brake pipe control portion. The brake pipe control portion includes a primary passage network, a control passage network, and an equalizing reservoir control chamber configured to control air pressure of the brake pipe. The brake pipe control portion also includes a first and second electronically controlled charge valve, and a first and second electronically controlled vent valve. The brake pipe control portion further includes an operating state control configured to switch operation of the at least one locomotive between a normal operation mode and a backup operation mode in response to an input by an operator.

Abstract: Disclosed is an automatic brake backup control system and method for a train equipped with an electronic airbrake system and including at least one locomotive, a brake pipe, a source of control pressure, and at least one brake. The system includes a pneumatic operating unit that includes a brake pipe control portion. The brake pipe control portion includes a primary passage network, a control passage network, and an equalizing reservoir control chamber configured to control air pressure of the brake pipe. The brake pipe control portion also includes a first and second electronically controlled charge valve, and a first and second electronically controlled vent valve. The brake pipe control portion further includes an operating state control configured to switch operation of the at least one locomotive between a normal operation mode and a backup operation mode in response to an input by an operator.