The 1st automatic transmission to employ a torque converter (instead of a fluid coupling) was the Buick Dynaflow, which was released for that 1948 design yr. In typical driving, the Dynaflow utilised only the major gear, counting on the torque multiplication with the torque convertor at decrease speeds. The Dynaflow https://gearboxauto75307.blue-blogs.com/41076957/an-unbiased-view-of-gearbox-auto