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Frein dynamique

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Dynamic brake is a braking system type designed to aid mechanical brakes when slowing down trains .

Pour éviter l'usure et la surchauffe des semelles de frein, la plupart des engins moteurs disposent d'autres moyens de retenue, tels que les freins rhéostatiques, hydrodynamiques et moteurs. Ces freins utilisent la transmission de l’engin moteur comme moyen pour ralentir, au lieu de compter sur le frottement des semelles de frein.

Depending on the powertrain type, there are different types of dynamic brakes, such as rheostatic , hydrodynamic and engine brakes.