The main automatic transmission to employ a torque converter (in place of a fluid coupling) was the Buick Dynaflow, which was introduced for the 1948 model 12 months. In ordinary driving, the Dynaflow utilised only the top equipment, relying on the torque multiplication of the torque convertor at reduced speeds. https://sethypcnx.csublogs.com/40759073/little-known-facts-about-gearbox-auto