The 1st automatic transmission to make use of a torque converter (in place of a fluid coupling) was the Buick Dynaflow, which was introduced for your 1948 design 12 months. In usual driving, the Dynaflow made use of only the top gear, relying on the torque multiplication of the torque https://gearbox-auto08518.blogars.com/33031089/details-fiction-and-gearbox-auto