Automated Mechanical Transmissions

Paper #:
  • 973176

Published:
  • 1997-11-17
DOI:
  • 10.4271/973176
Citation:
Morscheck, T. and Edelen, S., "Automated Mechanical Transmissions," SAE Technical Paper 973176, 1997, doi:10.4271/973176.
Abstract:

Eaton has been working on technologies for cost effective, reliable and safe Automated Mechanical Transmissions (AMTs) since the mid 1970's. The company has introduced three different systems since the late 1980's, but all three systems were constrained by the lack of precise engine speed control during shifting. With the advent of electronic engine controls the constraint has been removed and precise engine speed control during shifting can be easily accomplished. The result is a simplified system that is powerfully intelligent and fully capable of automatic shifting i.e., the transmission system determines when to shift and executes the shift without any driver inducement across the broad spectrum of truck usage. This paper discusses some of the AMTs available to the truck market, showing how the system benefits both the OEM and the end user.

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