Three groups of static operating conditions occur in hydrodynamic transmissions: traction, backward, and braking. These are arranged in an exact sequence within zones corresponding to the total external characteristics of the transmission systems. Examples of those characteristics are given for the principal types of fluid couplings and torque converters. Equations are presented to show how changes in the design of the torque converter (arrangement of blade wheels and blade angles), can be made in order to improve its performance. Torque converters with centripetal turbines are the best design for cars in which the torque converter is directly connected to the supplementary gearbox. This type of torque converter allows for higher efficiency at traction conditions, resulting in better fuel economy; higher efficiency in backing improves engine braking and activation of the driving wheels. A torque converter with a centrifugal turbine is more suitable for crane use because of its better external characteristics at the negative relative speed conditions.

  • Availability:
  • Corporate Authors:

    Inderscience Enterprises Limited

    La Motte Chambers
    St Helier, Jersey,   England 
  • Authors:
    • Narbut, A N
  • Publication Date: 1980-9

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00382083
  • Record Type: Publication
  • Source Agency: National Highway Traffic Safety Administration
  • Report/Paper Numbers: HS-030 497
  • Files: HSL, USDOT
  • Created Date: Mar 30 1984 12:00AM