A tailored reliability program was employed throughout the design and development of an electronically controlled four-speed 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 extensively 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 as the start of the transmission design.
A practical approach to automatic transmission reliability
Praktische Lösung der Zuverlässigkeit eines automatischen Getriebes
SAE-Papers ; 910640 ; 1-16
1991
16 Seiten, 7 Bilder, 5 Tabellen, 2 Quellen
Conference paper
English
A practical approach to automatic transmission reliability
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