Torque Converter: Notes
The torque converter transmits and multiplies torque. The torque converter is a 4-element device:
- Impeller and cover assembly
- Turbine
- Reactor
- Clutch and damper assembly
The reactor has a one way clutch (OWC) to hold it stationary during torque multiplication and allows it to rotate at higher vehicle speeds.
The TCC connects the torque converter housing to the damper when the TCC is applied.
During TCC release, the direction that the transaxle fluid flows through the torque converter allows the TCC to release. During TCC apply, the transaxle fluid flows in the opposite direction to apply the TCC.
The PCM controls TCC operation using the TCC solenoid in the solenoid body. TCC solenoid operation provides the modulation of hydraulic pressure to change the position of the TCC control valve and TCC regulator valve which changes the pressure and transaxle fluid direction in the torque converter.
The TCC can be applied in 3rd, 4th, 5th and 6th gears.