This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A New Approach to Finding Optimum Planetary Gear Trains for Automatic Transmissions
Annotation ability available
Sector:
Language:
English
Abstract
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.
Recommended Content
Technical Paper | A Transmission Concept for Improving Fuel Economy and Making Driving More Fun |
Technical Paper | Shift Modulation of Allison Automatic and Powershift Transmissions |
Authors
Citation
Oshidari, T., Hattori, N., and Morimoto, Y., "A New Approach to Finding Optimum Planetary Gear Trains for Automatic Transmissions," SAE Technical Paper 930676, 1993, https://doi.org/10.4271/930676.Also In
References
- Ohtsuka Kunio “Design of Planetary Gear Trainsfor Automatic Transmission” Journal of the Societyof Automotive Engineers of Japan 35 4 432 437 1981
- Chieng W. H. Hoeltzel D.A. “A combinatorialapproach for the automatic sketching of planarkinematic chains and epicyclic gear trains,” Trans ASME J Mech Des 111 4 530 536 1989