Diesel locomotives and multiple units fitted with hydromechanical transmission systems have sometimes featured hydrodynamic braking which, sharing a common technology, often forms a logical part of such a transmission scheme where it can adopt the role of an auxiliary brake. More recently, the successful development of the first full duty axle borne hydrodynamic brake has been undertaken. This was required to satisfy the high energy capacity and peak power ratings demanded by increasing running speeds, and also producing a sufficiently low unsprung mass to comply with civil engineering criteria for track forces. A transmission mounted variant for powered axles has subsequently been developed. The paper reviews the operating principles of the hydrodynamic brake, torque-speed characteristics, control philosophy including auxiliary brakes and performance. It outlines the equipment fitted to the Advanced Passenger Train, describes the development program undertaken and presents details of brake performance.

  • Supplemental Notes:
    • International Conference on Railway Braking, University of York, England, September 26-27, 1979.
  • Corporate Authors:

    Institution of Mechanical Engineers

    1 Birdcage Walk
    London SW1H 9JJ,   England 
  • Conference:
  • Publication Date: 1979

Media Info

  • Features: References;
  • Pagination: p. 217-227

Subject/Index Terms

Filing Info

  • Accession Number: 00324903
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: 1979-11 Conf Paper
  • Files: TRIS
  • Created Date: Feb 6 1981 12:00AM