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A new five-speed automatic transaxle, U150E, has been developed for FWD passenger cars. The goals of the development of this transaxle are fuel economy improvement, better acceleration performance, and a smoother shift feel. U150E achieved its targets by adopting a wide gearing range and using hydraulic control system design based on various simulations. This paper describes the major features, performance of this automatic transaxle, and technical points of the development.

Toyota Motor Corporation has developed a new four-speed automatic transaxle U140E named “Super ECT”. The U140E has achieved compactness which enables it to mount on many new platforms, achieved high efficiency, which contributes to improve fuel economy, and it achieved good shift feeling, response, and reduce noise. This paper shows the major features and performance of the U140E.