Electronically Controlled Full-Time 4WD Automatic Transmission System 880699

Fuji Heavy Industries Ltd. has introduced a new electronically controlled full-time 4WD automatic transmission system for Subaru. This system consists of the newly developed computer controlled 4-speed automatic transmission which drives front wheels directly and a multi-plate transfer clutch system which transmits the regulated torque to the rear wheels. Various sensor signals such as front and rear wheel speeds, throttle opening and gear position are sent to the transfer clutch electronic control unit, and the transfer clutch is actively controlled to provide the optimum traction distribution of the front and rear wheels under any road conditions.


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