Torque converter automatic transmission Toyota Corolla 120
The torque converter is an important component of an automatic transmission (AT) and serves to transfer torque from the engine to the transmission. The Toyota Corolla 120 automatic transmission uses a hydraulic torque converter.
Operating principle
The torque converter consists of three main elements:
* Pump wheel: Attached to the motor and rotates at its speed.
* Turbine wheel: Connected to the transmission shaft.
* Reactor wheel: Located between the pump and turbine wheels and rotates freely on the planetary mechanism.
When the engine is running, the pump wheel creates a flow of transmission fluid. This flow is directed to a turbine wheel, which rotates under the influence of the fluid flow. The reaction wheel changes the direction of fluid flow, which creates additional force that helps the turbine wheel spin faster.
Torque converter functions
*Torque Transfer: Transfers torque from the engine to the transmission even when the vehicle is not moving.
* Torque Multiplier: Increases torque at low speeds for easier starting and acceleration.
* Vibration Damping: Smoothes fluctuations in torque transmitted from the engine, protecting the transmission from excessive loads.
Location in automatic transmission
In the Toyota Corolla 120 automatic transmission, the torque converter is located between the engine and the transmission housing. It is bolted to the engine flywheel, and the torque converter output shaft is connected to the transmission shaft through a hub.
Torque Converter Maintenance
The torque converter does not require regular maintenance, but it should be checked if transmission problems such as slippage or vibration occur. A faulty torque converter may require replacement or repair.