The very first automatic transmission to implement a torque converter (instead of a fluid coupling) was the Buick Dynaflow, which was launched to the 1948 design calendar year. In regular driving, the Dynaflow made use of just the major equipment, depending on the torque multiplication of the torque convertor at https://gearboxauto74283.blogdon.net/details-fiction-and-gearbox-auto-50205945