Railway brake - Wikipedia
Braking is provided by a mechanism that is similar to a car drum brake. An air-powered piston pushes a pad against the outer surface of the train wheel. In conjunction with the mechanical brakes, the locomotive has dynamic braking .
Dynamic braking - Wikipedia
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The Trucks: Braking - How Diesel Locomotives Work ...
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Stretch, or power braking is a practice that is actively discouraged because of fuel consumption, dynamic braking is the preferred method by the four large carriers now in the U. S. Sure was a lot more fun to stretch brake, though!
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Dynamic braking is the method of train braking whereby the kinetic energy of a moving train is used to generate electric current at the locomotive traction motors. It works like this: While the train is coasting, the engineer, using an eight-notch controller similar to the throttle, energizes the traction-motor fields, causing the motors to act ...