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A railway air brake is a railway brake power braking system with compressed air as the operating medium. [1] Modern trains rely upon a fail-safe air brake system that is based upon a design patented by George Westinghouse on April 13, 1869. [ 2 ]
Therefore, an air brake system can use a much smaller brake cylinder than a vacuum system to generate the same braking force. This advantage of air brakes increases at high altitude, e.g. Peru and Switzerland where today vacuum brakes are used by secondary railways.
[citation needed] The New York Air Brake Company, based in Watertown, N.Y., is a unit of Knorr-Bremse, [5] based in Munich, Germany. Wabtec Railway Electronics, or WRE, a unit of Wabtec, [6] has facilities in Germantown, MD, and Cedar Rapids, Iowa. In the case of the Fortescue railway, the new ECP brakes are incompatible in several ways.
The driver's brake handle passes control voltages down three wires to each EP control valve, which allows air from the brake reservoir to pass into the brake cylinder, thereby activating the disc brake. The presence of the voltage holds the brakes off, providing a fail safe system. The 3 step "Westcode" brake uses three wires and these operate ...
One, which continues to design and manufacture railway air brakes in Wilmerding, Pennsylvania, merged with locomotive manufacturer MotivePower to form Wabtec. [15] The other, now known as WABCO Holdings, designs and manufactures control systems for commercial road vehicles, including air brakes, and is headquartered in Bern, Switzerland. [16]
His first braking system used an air compressor and an air reservoir in the locomotive, with a single compressed air pipe running the length of the train and with flexible connections between cars. That line controlled the brakes, allowing the engineer to apply and release the brakes simultaneously on all cars.
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