What are the three functions of a transmission?

[GenesisAnn]

Below are the three functions of a transmission: 1. Change the transmission ratio: Meet the traction needs under different driving conditions, allowing the engine to operate as much as possible under favorable conditions and satisfy potential speed requirements. It can significantly alter the vehicle's speed and the torque on the driving wheels. 2. Enable reverse driving: To meet the need for the vehicle to move backward. Since the engine crankshaft generally only rotates in one direction, but the vehicle sometimes needs to reverse, the reverse gear in the transmission is often used to achieve this. 3. Interrupt power transmission: When the engine starts, idles, the vehicle shifts gears, or needs to stop for power output, it interrupts the power transmission to the driving wheels.