Which is More Important: Transmission or Engine?

[McMartin]

Transmission is more important. Both the engine and transmission are indispensable key components of a vehicle. High surface parameters of an engine cannot solely determine outstanding power performance. It is the synergistic cooperation of every link in the drivetrain that ultimately defines the upper limit of a vehicle's power performance. Relevant details are as follows: 1. Function of the engine: A machine capable of converting other forms of energy into mechanical energy, including internal combustion engines (such as gasoline engines), external combustion engines (such as Stirling engines, steam engines), and electric motors. For example, an internal combustion engine typically converts chemical energy into mechanical energy. The term 'engine' can refer to both the power generation device and the entire machine including the power unit. 2. Classification of transmissions: Vehicle transmissions are divided into manual and automatic types. Manual transmissions mainly consist of gears and shafts, achieving speed and torque variation through different gear combinations. Automatic transmissions (AT), on the other hand, comprise a torque converter, planetary gears, a hydraulic torque variation system, and a hydraulic control system, achieving speed and torque variation via hydraulic transmission and gear combinations.