The main automatic transmission to use a torque converter (in lieu of a fluid coupling) was the Buick Dynaflow, which was released with the 1948 design calendar year. In typical driving, the Dynaflow applied just the leading equipment, relying on the torque multiplication on the torque convertor at lower speeds. https://gearbox-auto44185.blogprodesign.com/55488115/top-latest-five-gearbox-auto-urban-news