What is the function of the transmission in a vehicle?

The function of the transmission in a vehicle is primarily to transfer power from the engine to the wheels. This critical system enables the vehicle to move by allowing the engine's power to be utilized efficiently under varying driving conditions. The transmission modulates the engine's output, which involves adjusting the gear ratios that match engine power with the speed and torque required for acceleration or cruising.

In essence, the transmission acts as a mediator between the engine and the wheels, ensuring that the appropriate amount of power is delivered based on the driver's needs and the vehicle's speed. For instance, at low speeds, a lower gear provides more torque for acceleration, while higher gears are engaged for efficient cruising at higher speeds.

Understanding this function helps in comprehending how different types of transmissions, like automatic or manual, operate to provide a balance between performance, fuel efficiency, and drivability.