How does the auxiliary cooling water pump keep the engine warm by circulating the coolant?

The auxiliary cooling water pump keeps the engine warm by circulating the coolant in the following ways:
Coolant pressurization and circulation: The auxiliary cooling water pump pressurizes the coolant, which is a key step to ensure that the coolant can circulate smoothly throughout the system. The pressurized coolant can flow more effectively through the pipes, covering every corner of the engine and radiator, ensuring that the heat can be removed evenly and quickly. The impeller inside the water pump is the core component for pressurizing and circulating the coolant. When the water pump is started, the impeller begins to rotate at high speed. The centrifugal force generated by this rotation draws the coolant from the water inlet into the water chamber of the water pump. As the impeller continues to rotate, the coolant is pushed to the water outlet and is pushed to other parts of the cooling system. This process of suction and removal is continuous, ensuring that the coolant continues to flow through the system to form a stable cooling cycle.
Coolant flow path: The coolant flows out of the water outlet of the water pump and enters the radiator. The radiator is a device designed to dissipate heat. It is filled with tiny fins that increase the contact area between the coolant and the air, thereby dissipating heat more effectively. When the coolant flows through the radiator, the heat it carries is dissipated into the surrounding air. This is achieved through convection heat exchange between the radiator fins and the air. As the heat is dissipated, the temperature of the coolant gradually decreases. Next, the cooled coolant flows to the engine block and other key components. Here, the coolant absorbs the heat generated during the operation of the engine and then flows to the radiator again for heat dissipation. This process is repeated continuously, forming a closed cooling system.
Temperature regulation and maintenance: During the operation of the engine, the auxiliary cooling water pump automatically adjusts the circulation speed and flow rate of the coolant according to the operating status and temperature requirements of the engine. When the engine temperature rises, the water pump increases the circulation speed of the coolant to improve the heat dissipation efficiency and prevent the engine from overheating. When the engine temperature drops, the water pump reduces the circulation speed of the coolant to keep the engine within a suitable operating temperature range.
Function under special working conditions: After the engine stops running, the auxiliary cooling water pump can still continue to operate for a period of time to provide additional cooling support for key components such as the turbocharger to prevent them from being damaged due to overheating. When the engine is directly turned off after running at high speed for a long time, the auxiliary cooling water pump can continue to work for a period of time to eliminate the hidden dangers of failure caused by overheating of the turbocharger.
Energy saving and intelligent control: The auxiliary cooling water pump adopts electronic control and can be intelligently adjusted according to the actual working conditions and temperature requirements of the engine. When the engine is not under high load conditions, the water pump will appropriately reduce the workload to achieve the purpose of energy saving.
In summary, the auxiliary cooling water pump effectively regulates and maintains the temperature of the engine by circulating the coolant in the engine cooling system, ensuring that the engine can operate efficiently and stably in a high temperature environment.