In this video you can see the application of a magnetic track brake from Knorr-Bremse.

Magnetic track brakes are independent of the rail-wheel-contact and thus lead to shorter braking distances. They are only used for certain braking applications such as instance rapid braking or emergency braking.
When the energizing current is switched on, the brake is pressed onto the rail by its own magnetic attractive force and in the case of articulated magnets by the pneumatic pressure of the lowering device. Transmission links, which are fixed onto the bogie, pull the brake magnet over the rail head. The braking effect is created due to the friction between the pole shoes of the magnetic track brake and the rail.

The magnetic track brake always works with its maximum braking force. Due to the track cleaning effect of the brake magnets, the coefficient of adhesion between the wheel and the rail for the following wheels is increased while braking. This leads to an improvement also for the wheel-effective brake systems.
Magnetic track brakes are used at speeds of up to 280 km/h and are employed on railways, trams and mine railways. Using special friction materials made of sinter, they can also be employed at speeds of up to 350 km/h.

Music: I dunno by grapes (c) copyright 2008 Licensed under a Creative Commons Attribution (3.0) license. [ Ссылка ] Ft: J Lang, Morusque

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