What is the main purpose of a torque converter in vehicles?

The main purpose of a torque converter is to allow the engine to run while the vehicle is stationary. This is particularly important in automatic transmission vehicles, where the torque converter helps to decouple the engine from the transmission. By doing this, it ensures that the engine remains operational without stalling, even when the vehicle is not moving.

This ability allows for smoother transitions between stopping and starting, as well as providing a means for the vehicle to remain idle without requiring the driver to keep the accelerator pressed. When the vehicle is stationary, the torque converter can also multiply torque during take-off, allowing for a smoother acceleration when the driver decides to move.

While fuel efficiency, engine cooling, and enhanced acceleration are important aspects of vehicle performance, they are not the primary function of a torque converter. Instead, the torque converter’s design focuses on managing the connection between the engine and transmission, facilitating smooth operation in different driving conditions.