Automatic gearbox with torque converter - has two epicyclic gear trains with sun-wheels coupled to turbine wheel

摘要

The automatic gearbox has a fluid torque converter whose impeller is coupled to the input shaft, while the turbine wheel is coupled to the sun wheel of a primary epicyclic gear train. The planet carrier is coupled to the output. The sun wheel of a further gear train is also coupled to the turbine wheel, and its annulus to that of the primary train. The planet carrier of the second train is prevented from rotating in the reverse direction. A torque is exerted in the forward direction on the primary train annulus, in the form of a second torque converter with rotors coupled to the turbine wheel and annulus.