What is the relationship between the transmission and the engine?

[DeJulianna]

The transmission and the engine are not directly related; they are two completely independent components. However, they work closely together and are indispensable to each other. For a car to move, the engine must first operate, outputting power to the transmission. The transmission then controls this power and transfers it to the car's tires. The engine generates torque, which serves as the car's driving force, pulling or pushing the wheels to rotate. Typically, a car's maximum torque is around 200 Nm, which can be intuitively expressed as a thrust of approximately 21 kg. The role of the transmission is to ensure smooth vehicle startup and to change the gear ratio, transmitting kinetic energy to the tires as efficiently and effectively as possible.