EWB 154 R Linear

Applications High-Speed Trains EWB 154 R linear eddy current brake

Axle bearing Carrier Braking force transfer lever Integral beam Coils Track rod Air bellow

The linear eddy current brake not only offers ENHANCED SAFETY LEVELS BUT ALSO ECONOMIC ADVANTAGES. This system operates without contact with the rail and the braking force remains constant even at high speeds.

Being completely wear-free, the DESIGN AND FUNCTION linear eddy current brake can also be The brake consists of a magnetic yoke with electrical coils that are used as the service brake, reducing linearly placed to the rails and magnetized with alternating north wear on the . The fact that and south poles. When the coils are put under current while the it operates without contact with the brake is not in motion, a symmetrical is generated rail means it is also unaffected by that includes the rail head and exerts a vertical magnetic force (F). weather conditions. It can be When the is moved along the rail it induces a non-station- applied with great precision. This ary magnetic field in the rail head and generates electrical tension is a particular advantage on long that causes eddy currents. These disturb the magnetic field in such downhill grades as the train can be a way that the magnetic force (F) is diverted against the direction of kept under control without any risk travel. The horizontal component of this magnetic force is used as of the overheating. This results braking force (FB). in greater safety and economy of operation. rail EWB 154 R linear eddy current brakesystems

Advantages n Independent of wheel / rail coefficient of adhesion n N o mechanical contact, therefore wear-free n N o impact on TSI infrastructure n Controllable braking force n Strong braking force for high speeds n Functions also as service brake n N o noise, no smell

Technical data n B raking force per unit at 200 km/h: ~ 21 kN n L ength including end elements: 1540 mm n Width of magnet: 130 mm n Height of magnet: 269 mm n Total weight: 900 kg

Velaro D with EWB 154 R Linear eddy current brake 154 R

Functioning of linear eddy current brakes

v = 0 v > 0

Yoke Pole core Coil

FB Air gap Rail FA F(v>0) B (v = 0) B (v > 0)

F ... magnetic force FB ... braking force FA ... attraction force Fax: +4989 3547-2767 Tel: +49893547-0 Germany 80809 Munich Straße80 Moosacher GmbHSchienenfahrzeuge Knorr-Bremse Systeme für www.knorr-bremse.C

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P-1230-EN 09.2014