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Toyota “ECT-i” a New Automatic Transmission with Intelligent Electronic Control System
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English
Abstract
TOYOTA has developed a new automatic transmission, called the A341E. This transmission employs a unique engine and transmission integrated intelligent control system named “ECT-i”, and a high performance “Super Flow” Torque Converter.
This control system is capable of total control of engine torque and clutch hydraulic pressure during shifting, which has resulted in very smooth shift without changes over the life of the transmission.
The “Super Flow” Torque Converter has a modified geometry optimized by the analysis of internal flow by means of computer simulations, attaining the highest efficiecy in the world.
With the use of such systems, this new automatic transmission has improved total performance of the vehicle.
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Citation
Kondo, T., Iwatsuki, K., Taga, Y., Tanguchi, T. et al., "Toyota “ECT-i” a New Automatic Transmission with Intelligent Electronic Control System," SAE Technical Paper 900550, 1990, https://doi.org/10.4271/900550.Also In
References
- Numazawa A. Kubo S. Shindo Y. Moroto S. “TOYOTA Four-Speed Automatic Transmission with Overdrive” Paper 780097 SAE Automotive Engineering Congress Detroit February 1978
- Taga Y. Nakamura K. Ito H. Taniguchi T. “TOYOTA Computer Controlled Four-Speed Automatic Transmission” Paper 820740 SAE Passenger Car Meeting Troy June 1982
- Schwab M. “Electronic Control of a 4-Speed Automatic Transmission with Lock-Up Clutch” Paper 840448 SAE International Congress & Exposition Detroit March 1984
- Sindo Y. Ito H. Ishihara T. “A Fundamental Consideration on Shift Mechanism of Automatic Transmission” Paper 790043 SAE Congress & Exposition Detroit March 1979