AUTOMATIC TRANSMISSION

An oil-filled torpue converter that multiplies engine torpue inside the transmission bellhousing allows some slippage so the vehicle can be stopped while the engine runs.

Afriction clutch built into the center of the converter locks its input and output shafts to the same speed for highway cruising. Computer-controlled hydraulic pressure selects which combination of gears within several planetary sets can rotate. Changing the ratios

Between the input and output shafts,