Why does a Cummins engine overflow water when the temperature is not high?

[SanAndrew]

Cummins engine overflows water when the temperature is not high because during operation or at the moment of shutdown, coolant sprays (overflows) out from the radiator or expansion tank filler opening. Introduction to the engine: The automobile engine is the machine that provides power to the car, serving as the heart of the vehicle, affecting its power, economy, and environmental performance. Depending on the power source, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors, and hybrids, among others. Principle of the engine: The engine is the power source of the car. Most automobile engines are thermal power devices, referred to as heat engines. A heat engine converts the thermal energy generated by fuel combustion into mechanical energy through changes in the state of the working medium.