What does a torque converter do
The torque converter is one of the components in an automatic transmission. Yes, this torque converter is generally found in cars that use automatic transmissions. In general, the torque converter functions as a link for the flow of power generated by the engine to be forwarded to the transmission and then to the wheels of the vehicle.
Mostly, the torque converter is installed between the engine and the transmission. If we get a friction clutch in a car with a manual transmission, we will find this torque converter component with an automatic transmission car.
So, what exactly is the function of this torque converter for the car? This article will share information related to the torque converter function in an automatic transmission car. Below are the functions of the torque converter.
1. As an automatic clutch
The first torque converter function is working as an automatic clutch. Yes, in most cars with automatic transmissions, we won't find the clutch pedal anymore. The clutch pedal is used to disconnect and connect the engine's rotating power to be forwarded to the transmission.
In manual transmission cars, it is generally used a friction clutch, while automatic transmission cars use a torque converter. This torque converter works hydraulically by utilizing a special oil known as the Automatic Transmission Fluid (ATF).
This automatic transmission fluid will connect or disconnect the engine's rotation to the automatic transmission components. The Transmission Control Unit (TCU) will control the ATF oil flow process through the Hydraulic Control Unit.
2. Reduce torsional vibration
The torque converter's second function is to reduce torsional vibration that occurs between the engine and the drive train. When the car is running, there will be changes in speed and torque in the engine and transmission.
For example, during sudden acceleration, where at this time, the torque that occurs in the engine will be stronger than the torque in the transmission and wheels.
A torque converter is used to prevent a big shock when connecting the power between the engine and the transmission. The torque converter is equipped with damper components such as a damper clutch and a spring integrated inside the torque converter.
With the damper clutch and spring inside the torque converter, the torsional vibration damping process can be done to reduce the shock that occurs during the connection process.
Also Read:3. Increase the engine's torque
The third torque converter function is to increase the engine's torque. In general, the engine's rotation and power, which is used to rotate the transmission using ATF, will gradually decrease the torque.
To prevent this decrease in torque, a stator with a one-way bearing is used and equipped with several additional components inside the torque converter. A starting component between the pump impeller and the turbine runner will prevent a decrease in engine torque.
The stator will strengthen the power flow and rotation in the transmission fluid when it rotates, transferring power from the pump impeller and turbine runner. That way, the engine's torsional power can be transmitted to other components in the automatic transmission without decreasing torque.
4. Evens out and smoothes engine vibrations.
The last torque converter function we know of is smooth out vibrations in the engine before the torsional force is transferred to the transmission.
This function is intended to prevent damage to the automatic transmission components due to excessive vibration and shock from the engine. Yes, the torque converter will reduce vibrations and smooth the rotation from the engine to the transmission. With a torque converter, it can achieve a more comfortable ride.