Vehicle mechanical fan cooling system, control method and vehicle

The invention provides a vehicle mechanical fan cooling system, a control method and a vehicle. The mechanical fan cooling system for the vehicle is provided with an engine, a mechanical fan, a fan transmission, an engine control unit, and an engine water temperature sensor, an engine oil temperature sensor and an environment temperature sensor which are electrically connected with the engine control unit, the engine control unit is used for reading a water temperature signal, an oil temperature signal, an environment temperature signal and an engine rotating speed signal in real time and obtaining the target rotating speed of the mechanical fan and the ratio of the target rotating speed to the rotating speed of the engine in real time based on the environment factors and the real-time change of the whole vehicle working condition, and therefore fan transmission parameters are adjusted. On-off of the mechanical fan is controlled in real time, the actual rotating speed of the mechanical fan is accurately adjus