The initial automatic transmission to utilize a torque converter (as opposed to a fluid coupling) was the Buick Dynaflow, which was introduced for that 1948 design year. In usual driving, the Dynaflow utilized just the major gear, relying on the torque multiplication of the torque convertor at decrease speeds. The https://gearbox-auto21852.blazingblog.com/34161912/gearbox-auto-fundamentals-explained