Automatic Transmission

An Automatic Transmission is one where the gears are selected and changed automatically unlike in a Manual gearbox.


Internal components of an Automatic Transmission include:
- Torque Converter:
The way this works is, it hydraulically connects the engine to the transmission. The torque converter takes the place of a mechanical clutch, allowing the transmission to stay in gear while the vehicle is stationary without stalling. There are three main components in the torque converter, they are the Impeller, Turbine and Stator. 


- Planetary Gearset:
The bands and clutches are actuated by hydraulic servos which provide 2 or more gear ratios.




- Clutches and Bands:
To change gear, one or two clutches are used to hold a member of the planetary gearset in place while allowing another to rotate.