The engine cooling system is mainly based on water cooling. It is cooled by circulating water in the cylinder. The hot water is introduced into the radiator and cooled by wind and then return t.
When the engine is running, the pressure of the coolant forces the coolant to circulate, and the circulating coolant takes away the heat of the engine block, liner, cylinder head and other parts. When the coolant temperature does not reach the opening temperature of the thermostat, the coolant will re-enter the cylinder directly from the water pump through the water circulation pipe. When the coolant temperature reaches the opening temperature,the thermostat valve will close, and the coolant will flow through the thermostat into the radiator tank. The hot water is forced to be cooled by the fan through the air flow, and part of the heat is lost,the temperature will drop.Then the coolant will flow into the radiator tank, and re-enter the cylinder through the water pump to participate in the cooling cycle again.