What is the function of the transmission torque converter?
2 Answers
The function of the transmission torque converter is: to transmit torque, change torque, shift gears, and engage/disengage the clutch. It is generally installed between the engine power unit and the transmission, with ATF (Automatic Transmission Fluid) hydraulic pressure acting as the working medium in between. The torque converter helps the engine transmit power to the gears, reducing the impact force experienced by the vehicle during gear shifting. This is very similar to the semi-engaged state of a manual transmission clutch. When the rotational speed rises to a certain level, the torque converter will automatically lock. The transmission torque converter is also known as a hydraulic torque converter, serving as a component in automatic transmissions that assists the engine flywheel in transmitting power. It can directly replace the traditional clutch in manual transmissions, consisting of three hydraulic components: the pump impeller, turbine, and stator.
When driving an automatic transmission car, I've noticed that the torque converter is really effective. It buffers the engine's power transmission during vehicle start-up, making the process smooth and free of jerking. I remember once being stuck in traffic on an uphill slope, and the car started very steadily, without the worry of rolling back or stalling like with a manual transmission. Essentially, its role is to amplify the engine's torque before transmitting it to the transmission, especially at low speeds or when stationary, ensuring more continuous power delivery. It also reduces impact on the drivetrain, extending its lifespan. Without it, an automatic transmission would have to rely on a rigid connection, which could lead to shaking or increased fuel consumption. Don't underestimate this component in daily driving—it has a significant impact on fuel efficiency and driving smoothness.
