Torque converter donut
The torque converter donut is a component of an automatic transmission (AT) that provides a smooth transition of torque from the engine to the transmission.
Torque converter donut functions:
*Torque Transfer: The donut uses pressurized fluid to transfer torque from the engine to the transmission without a mechanical connection.
*Torque Enhancement: The torque converter donut converts the engine’s kinetic energy into additional torque at low speeds, which helps the vehicle start and accelerate in low gears.
* Vibration Damping: The fluid in the donut also absorbs vibrations from the engine, reducing noise and improving the smoothness of the vehicle.
Torque converter donut design:
The torque converter donut consists of three main parts:
* Housing: The outer part that contains the liquid and other components.
* Motor impeller: Connected to the motor and rotates with it.
* Turbine: Connected to the transmission and rotates in the opposite direction from the engine impeller.
Working principle:
* Pressurized fluid fills the torque converter donut.
* The motor impeller rotates, imparting angular momentum to the fluid.
* The fluid transfers angular momentum to the turbine, causing it to rotate.
* Engine torque is transmitted from the engine impeller to the turbine through fluid. At low speeds, torque increases due to reverse fluid flow.