The torque converter is made of an engine driver impeller and also a turbine converted to your gearbox input shaft. It also has a little vane wheel known as a stator involving the impeller along with the turbine. A compound planetary gearset acts like two planetary gearsets blended. Understand compound https://gearbox-auto03679.blogoscience.com/40051587/what-does-gearbox-auto-mean