Download - Electrohydraulic Controlled Axle Steering (eCAS)

Liebherr-Transportation Systems GmbH & Co KGLiebherrstraße 1, A-2100 Korneuburg � +43 5 08 09 51 0 www.liebherr.com, E-Mail: [email protected]

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General Technical DataCharacteristics ValueStroke – cylinder +/- 15 mm100% radial adjustment for ~180 m curve radius2.7 m wheelbase to radius of actuator force +/- 45 kNActuation speed 7 mm/sDiameter actuator 190 mmWidth actuator 130 mmParasitic stiffness in X-direction- Actuator- Primary Suspension

0 N/mm bogie specific (200 – 500 N/mm)

Transverse stiffness of actuator Cy 2.0 - 7.0 kN/mmLongitudinal stiffness of actuator Cx >= ~25 kN/mm

Product Features:• Reduction of track damage (lower track access charges)• Reduction of wheel wear• Lower lateral wheel rail forces, track shifting and

single wheel force• Reduction in rolling resistance compensates

more than energy consumption of eCAS system• Signifi cant reduction of rolling contact fatigue• Elimination of squealing noise in narrow curves• Retrofi table on existing bogies• Position control independent of wheel/rail condition• Position control algorithm adjustable by software• One actuator per wheelset, compact unit, depending

on space restrictions (gauge)

Optional: • Diagnostic function of bogie and track conditions• Integration into train network

This project is partly-funded by the Department for Transport (DfT), United Kingdomand managed by the Rail Safety and Standards Board (RSSB), United Kingdom

Electrohydraulic Controlled Axle Steering (eCAS)

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