The first automatic transmission to employ a torque converter (as an alternative to a fluid coupling) was the Buick Dynaflow, which was introduced for that 1948 product year. In normal driving, the Dynaflow utilized only the prime equipment, depending on the torque multiplication of your torque convertor at decrease speeds. https://lorenzobhijh.jiliblog.com/90869083/not-known-facts-about-gearbox-auto