What happens when the engine is under heavy load?

[ArcherMarie]

Under heavy load, the engine may experience overheating of the generator coil, aging of the insulation layer, and burning out of the generator coil. Generators have an overload range: Each generator has an allowable overload range. Short-term overload (usually only a few seconds) is not problematic. However, prolonged operation under overload can lead to overheating of the generator coil, aging of the insulation layer, and burning out of the generator coil. Overload without reaching the burning point: If the overload does not reach the point of burning out the generator, even if the machine can still operate, the engine is already working under excessive load. Prolonged operation under such conditions will cause significant abnormal wear and tear on the engine, greatly reducing its lifespan. Additionally, fuel consumption will increase accordingly, resulting in poor economic efficiency.