Within a torque converter there are actually not less than 3 rotating elements: the impeller, which can be mechanically driven via the primary mover; the turbine, which drives the load; along with the stator, that is interposed in between the impeller and turbine making sure that it could alter oil https://tituslrswu.thezenweb.com/torque-converter-clutch-things-to-know-before-you-buy-71765162