There has been a growing need to develop more compact automatic transmissions with a greater number of speeds for better fuel economy and better driveability. This study investigated a method for determining suitable planetary gear trains for today's transmissions. A computer program has been developed for application to five-speed transmissions consisting of two planetary gearsets. By analyzing various gear train possibilities, the program can identify which gearsets are suitable for different conditions, including the number of speeds, the number of binding elements, topological suitability and other factors.
A New Approach to Finding Optimum Planetary Gear Trains for Automatic Transmissions
Sae Technical Papers
International Congress & Exposition ; 1993
1993-03-01
Conference paper
English
A new approach to finding optimum planetary gear trains for automatic transmissions
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