What's the use of torque converter?

1, hydraulic torque converter, whose full name should be hydraulic torque converter, is a key component in automatic transmission, which consists of turbine, pump wheel, guide wheel, lock-up clutch assembly and rear cover.

2. Function of torque converter: (1) Function of clutch. When the engine is idling, the torque converter is equivalent to an unengaged clutch between the engine and the gearbox. (2) Torque increasing effect. With the cooperation of "high impeller speed" and "low turbine speed", the torque increases, thus generating greater starting and driving torque. (3) Hydraulic coupling. Under the condition of non-idle or non-start, it is equivalent to a hydraulic coupler, which transmits the engine torque to the gearbox. (4) Locking effect. When the turbine speed rises to the same speed as the pump wheel, the lock-up clutch is engaged and the torque converter transmits the engine power to the gearbox 1: 1.