This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Electronically-Controlled Transmission Systems - Current Position and Future Developments
Annotation ability available
Sector:
Language:
English
Abstract
Current demands for shift comfort and driveability, and the need for interaction between the transmission and other vehicle electronic systems provide the impetus for introducing electronic control systems for transmissions. The standard functions of such systems have proven their worth and contributed towards satisfying these demands. For this reason, despite the additional cost involved, most automatic transmissions will be electronically controlled within five years. The need to optimize fuel consumption leads to wider gear ratio spreads. New systems which satisfy this demand will be 5-speed automatic transmissions and CVT in particular, and perhaps twin-clutch transmissions for special applications. All these new systems will need electronic control to reach competitive performance levels.
Recommended Content
| Technical Paper | A Rubber Belt CVT for Front-Wheel-Drive Cars |
| Technical Paper | Electro-Mechanical Control Devices for Continuously Variable Transmissions |
Authors
Topic
Citation
Schwab, M., "Electronically-Controlled Transmission Systems - Current Position and Future Developments," SAE Technical Paper 901156, 1990, https://doi.org/10.4271/901156.Also In
References
- Taga Y. Nakamura K. Ito H. Toyota Computer Controlled Four-Speed Automatic Transmission SAE 820740
- Schwab M. Electronic Control of a 4-speed Automatic Transmission with Lock-up Clutch SAE 840448
- Maier U. Petersmann J. Seidel W. Stohwasser A. Wehr T. Porsche Tiptronic 92 1990 6
- Schöpf H.-J. Jürgens G. Pickard J. The new Mercedes-Benz five-speed Automatic Transmission 91 1989 9
- Oberhauser M. ZF-internal report 1990
- Bart J. Runge W. Continuously variable transmission KWG fl5 FISITA 905087
- Flegl H. Wüst R. Stelter N. Szodfridt I. The Porsche Dual Clutch Transmission 89 1987 9
- Kuroyanagi J. 1987