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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] The Westinghouse Air Brake Company was subsequently organized to manufacture and sell Westinghouse ...
In general, this conventional system consists of a brake pipe that runs the length of the train which supplies air to reservoirs mounted on each of the cars. When the brake pipe and car components are charged with air, the brakes release. When the engineer needs to make a brake application, control valves in the locomotive reduce the brake pipe ...
Contains either high-pressure compressed air or air at lower than atmospheric pressure (vacuum), depending on whether the locomotive has an air brake or vacuum brake system. [ 6]: 483–486 [ 3]: 1. Water compartment. Tank for water to be used by the boiler to produce steam. [ 3]: 79. Coal bunker.
Railway brake. A traditional clasp brake: the cast iron brake shoe (brown) is pushed against the running surface (tyre) of the wheel (red), and is operated by the levers (grey) on the left. A band brake fitted to an 1873 steam locomotive of the Rigi Railways. A railway brake is a type of brake used on the cars of railway trains to enable ...
The electro-pneumatic brake system on British mainline railway trains was introduced in 1950 and remains the primary braking system for multiple units in service today, although London Transport underground trains had been fitted with EP brakes since the 1920s. The Southern Region of British Railways operated a self-contained fleet of electric ...
Although the plain automatic air brake was a great improvement over the straight air brake, in an emergency the system still applied the brakes to the last cars in a train later than to the first cars in a train. To remedy that condition, George Westinghouse invented the quick-action triple valve in 1887.
The Kunze-Knorr brake (Kunze-Knorr-Bremse or KK-Bremse) is an automatic compressed-air brake for goods, passenger and express trains. It was the first graduated brake for goods trains in Europe . When it was introduced after the First World War , goods train brakes switched from hand operation to compressed-air in various European countries.
The cooling grill for the brake grid resistors is at the top center of the locomotive. Dynamic braking is the use of an electric traction motor as a generator when slowing a vehicle such as an electric or diesel-electric locomotive. It is termed "rheostatic" if the generated electrical power is dissipated as heat in brake grid resistors, and ...