The initial automatic transmission to employ a torque converter (in lieu of a fluid coupling) was the Buick Dynaflow, which was released for the 1948 product calendar year. In ordinary driving, the Dynaflow applied only the leading equipment, relying on the torque multiplication of the torque convertor at decreased speeds. https://josuehanak.luwebs.com/34467002/the-smart-trick-of-gearbox-auto-that-no-one-is-discussing