The physical characteristics of an engine necessitate the existence of a transmission:
Firstly, the engine's peak rotational speed dictates the transmission's design. Secondly, the engine's maximum power and maximum torque occur within specific RPM ranges, for instance, the engine's maximum power peaks at 5500 rpm. During vehicle operation, the transmission can generate different gear ratios between the engine and the wheels, allowing the engine to operate in its optimal power performance state through gear changes. Ideally, a transmission should have flexible gear ratios, and a Continuously Variable Transmission (CVT) possesses this characteristic, allowing for better utilization of the engine's power performance. Therefore, choosing the appropriate transmission can improve a vehicle's driving performance and fuel efficiency.
