Torque Converter and Torque Converter Lock-Up Clutch

Torque Converter and Torque Converter Lock-Up Clutch

Torque Converter and Torque Converter Lock-Up Clutch:

The torque converter transmits engine torque hydraulically to the transmission input shaft.

The stator boosts the torque to the input shaft (approximately 85 percent difference in speed between the impeller and the turbine).

The stator is made of synthetic resin to reduce weight.

To increase the efficiency of the automatic transmission, the torque converter has an apply clutch. When the torque converter clutch is applied, the torque is transmitted directly from the crankshaft through the torque converter housing to the transmission input shaft.

The torque converter clutch is applied hydraulically by the transmission control module (TCM) by means of the solenoid valves in the valve body in 3rd, 4th and 5th gears. Apply is dependent on the throttle position, vehicle speed and manual selector lever position.