What is the reason for the car fan not rotating at high speed?

[StMichael]

Car fan cannot rotate at high speed due to a malfunction in the fan itself. Here is an introduction to engine-related content: 1. Energy conversion: An engine is a machine capable of converting other forms of energy into mechanical energy, including internal combustion engines (reciprocating piston engines), external combustion engines (Stirling engines, steam engines, etc.), jet engines, electric motors, etc. For example, an internal combustion engine typically converts chemical energy into mechanical energy. 2. Device: The engine is applicable to both power generation devices and can also refer to the entire machine including the power device (e.g., gasoline engine, aircraft engine). The engine was first born in the UK, so the concept of the engine also originates from English, its original meaning refers to that kind of "mechanical device that generates power."