
The components of an automatic transmission are: 1. Torque converter; 2. Mechanical transmission; 3. Shift actuator; 4. Hydraulic control system; 5. Electronic control system. The transmission, also known as the gearbox, is a mechanism used to change the speed and torque from the engine. It can fix or change the gear ratio between the output shaft and the input shaft. It is divided into: 1. Step transmission; 2. Continuously variable transmission. The functions of the transmission are: 1. Change the transmission ratio to meet the traction needs of different driving conditions; 2. Achieve reverse driving to meet the needs of the car moving backward; 3. Interrupt power transmission; 4. Achieve neutral gear.


