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 transaxle input shaft.

The stator boosts the torque to the input shaft (approximately 85% 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 transaxle, the torque converter has an apply clutch. When the torque converter lock-up clutch is closed, the torque is transmitted directly from the crankshaft through the torque converter housing to the transaxle input shaft.

The torque converter clutch is applied hydraulically by the PCM by means of the solenoid valves in the valve body in third and fourth gears. Apply is dependent on the throttle position, vehicle speed and manual selector lever position.