A Practical Approach to Automatic Transmission Reliability

Paper #:
  • 910640

Published:
  • 1991-02-01
Citation:
Robinson, G., "A Practical Approach to Automatic Transmission Reliability," SAE Technical Paper 910640, 1991, https://doi.org/10.4271/910640.
Author(s):
Pages:
19
Abstract:
A tailored reliability program was employed throughout the design and development of an electronically controlled fourspeed automatic transmission. This paper describes the reliability trade-off study used to select the control system design philosophy and details the development of specific component reliability targets from the overall system requirements.A unique adaptation of the transmission electronic control system has enabled an extensive data collection program to be completed. From this information a detailed life cycle profile was defined based on various end user operating conditions and specific customer durability tests. The results of this program are presented together with a comparison against the original component life targets set at the start of the transmission design.
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