The 1st automatic transmission to utilize a torque converter (as opposed to a fluid coupling) was the Buick Dynaflow, which was introduced for that 1948 model 12 months. In ordinary driving, the Dynaflow applied just the top equipment, counting on the torque multiplication of the torque convertor at decreased speeds. https://simonxluhr.blogsvila.com/33934798/the-ultimate-guide-to-gearbox-auto