Fundamental Studies on ATF Friction I.

Paper #:
  • 971621

Published:
  • 1997-05-01
Citation:
Tipton, C. and Schiferl, E., "Fundamental Studies on ATF Friction I.," SAE Technical Paper 971621, 1997, https://doi.org/10.4271/971621.
Affiliated:
Pages:
18
Abstract:
Automatic transmission clutches are complex tribological systems. Frictional performance is controlled by the interaction of base fluids, additive components, composition clutches, and steel reaction plates with varying energy inputs and thermal stresses in an oxidizing environment. This paper, rather than addressing fully formulated fluid performance in such a system, takes a more fundamental approach where the number of system variables is reduced and the relative effects of formulation variables on system performance can be better examined. Relationships among observed friction performance, system oxidation, friction member condition, and representative performance additives are explored using a synthetic base fluid and a conventionally refined mineral base fluid.
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