Self-energising Electro-hydraulic Brake (SEHB)

This article describes the development work the Institute for Fluid Power Drives and Controls (IFAS) of Aachen University has been doing on a self-energizing electro-hydraulic brake (SEHB) in the context of a project sponsored by the German National Science Foundation. The article contains reports on the attempts to implement concepts for electro-mechanical or electro-hydraulic add-ons to conventional air brakes. A brake whose only mode of operation is electro-hydraulic can do entirely without the production of compressed air and can thereby save on the energy needed for it. Most railroad brakes used today do not incorporate self-energization. Their behavior is stable and predictable. The use of the self-energizing effect considerably reduces the power needed by friction brakes. However, if a self-energizing effect is applied to unadjusted brakes, fluctuations in friction may have drastic effects on the deceleration torque, which, in extreme cases, may even be the cause of instability. The SEHB developed by the IHAS minimizes the risk of instability by making a continuous fluid-mechatronic adjustment to the deceleration torque in combination with simple hydraulic safety mechanisms.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/276300714
• Authors:
  • Kuhnlein, Michael
  • Ewald, Julian
  • Liermann, Matthias
  • Murrenhoff, Hubertus
• Publication Date: 2010-11

Language

• English

Media Info

• Media Type: Print
• Features: Figures;
• Pagination: pp 31-34
• Serial:
  • European Rail Technology Review
  • Volume: 50
  • Issue Number: 4
  • Publisher: DVV Media Group
  • ISSN: 0079-9548

Subject/Index Terms

• TRT Terms: Air brakes; Friction brakes; Hydraulic brakes; Railroad traffic; Railroad trains; Railroad transportation; Types of brakes
• Uncontrolled Terms: Self-energizing
• Subject Areas: Railroads; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 01322383
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 15 2010 8:52AM