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AISIN AW has developed a new fuel saving technology called the Automatic Neutral Control System which is installed in the 50-40LN automatic transmission. While idling with the brake applied, the system shifts the transmission into neutral by automatically releasing its forward clutch, so that the slipping loss of the torque converter is eliminated and less fuel is required to maintain the idling of the engine it shifts back to drive when the foot brake is released or the accelerator pedal is pressed. A folly integrated electro-hydraulic circuit and unique control principle were designed to provide very precise pressure to the forward clutch. As a result, we have confidence that a highly reliable system has been achieved with large improvements in fuel consumption.

AISIN AW has developed a new FWD 6-speed automatic transmission “TF-80SC” for luxury cars with high torque engines. This newly developed automatic transmission (A/T) is based on the concept of the FWD 6-speed A/T “TF-60SN” that we have already introduced to the world market. The basic concept for the 6-speed A/T is to achieve weight saving and compact as well as better fuel efficiency and driving performance in comparison with conventional 5-speed A/Ts. Of course the shift feel must be the top level in the world, so we increased torque capacity of the TF-80SC to cover luxury cars with high torque engine. One of the outstanding features of the A/T is an advanced band brake that allows simultaneous pursuits of high capacity, weight saving, size reduction and high efficiency as well as high-quality shift feeling qualified for luxury cars. This paper describes the advantages and structure of the new A/T with a focus on our approach to new technology of the band brake system.