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Smooth Friction Control Strategy for DM-Clutch Based Driveline Systems

[+] Author Affiliations
Xubin Song, Jason Liu

Eaton Corporation, Southfield, MI

Paper No. DETC2014-34049, pp. V003T01A001; 8 pages
doi:10.1115/DETC2014-34049
From:
  • ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 3: 16th International Conference on Advanced Vehicle Technologies; 11th International Conference on Design Education; 7th Frontiers in Biomedical Devices
  • Buffalo, New York, USA, August 17–20, 2014
  • Conference Sponsors: Design Engineering Division, Computers and Information in Engineering Division
  • ISBN: 978-0-7918-4634-6
  • Copyright © 2014 by ASME

abstract

Centrifugally operated friction clutches, named DM clutch in this paper, had been developed to couple an engine to an inputshaft of a mechanical transmission for commercial vehicles [1]. The DM clutch based AMT (automated mechanical transmission) has been in production from Eaton for more than a decade in the North American commercial vehicle market. Its working principle is to take advantage of the centrifugal force of sliding masses between two clutch plates to complete the transitions among unlock, slipping and lockup. DM clutch is reliable and durable, but not easy to modulate because of involvement of engine speed controls, nonlinear friction forces and variable vehicle loads. One challenging aspect is the occurrence of torsional vibrations during vehicle launches. In this paper, a friction based damping control strategy [2, 3] utilizing the frictional characteristics is shown to control the DM clutch to achieve smoother vehicle launch. The vehicle testing data shows its effectiveness of smoothening the vehicle launches with and without the loaded trailer under different operational conditions.

Copyright © 2014 by ASME
Topics: Friction

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