Electric Coolant Pump

 
 
Electric coolant pump is a kind of automotive electric water pump that driven by a 12v, 24v or 48v brushless dc motor. Usually powered by battery and used as a battery powered water pump in new energy buses, and new energy vehicles etc. It is small in size, high in efficiency, usually used for automobile's engine cooling, new energy bus,new energy vehicles battery circulation cooling, etc. It pressurizes the coolant to ensure the coolant circulates in the cooling system. A popular view is that : it pumping the coolant continuously circulate in the radiator engine block. And take away the heat to ensure that avoids high temperature to damage the engine .

 

What hazard are there to the engine caused by the damage of the engine coolant pump?

 

To put it simply, the automobile mainly relies on the small electric water pump to circulate the water to cool the system, when it is running.  However, the main water pump will stop working, after the vehicle stopped. If there is a problem with the auxiliary electric coolant pump, the turbocharger will not be cooled. It will lead to the reducing in the life of the turbocharger. In addition, the water vapor in the auxiliary coolant pump may cause a short circuit in its control circuit. This will cause too high temperature of the engine coolant pump and erode the related parts. In severe cases, the engine compartment may be ignited or spontaneously ignited, exist a certain security risk.

 

How to judge the automotive coolant pump is damaged or not?

 

    1. Idle speed is unstable: the failure of the electric coolant pump can lead to the rotation resistance increased. Since the coolant pump connects with the timing belt, the increase of the rotation resistance of the coolant pump can directly affect the rotation of the engine. It manifests the pulsation of the speed after starting, when in idling. Which is more obvious in winter and can even cause the engine flameout.
    3. Noise of the engine area: This sound is a rotating friction sound, similar to the sound of buzzing sound. This kind of sound will accelerate with the rotation of the engine. The changes in the volume of the sound happens, this noise is more and more obvious along with the fault increased.
    5. The engine water temperature is unstable: It manifested, the engine water temperature indicator needle fluctuates within a certain range. The reason is that the water temperature in the small cycle is inconsistent due to lacking of circulation. On the one hand, it lead to the open temperature of the thermostat rose. On the other hand, the low temperature water quickly flows to the thermostat, after the high temperature water flows out. So that close the thermostat quickly.

In general, the engine-assisted electric coolant pump can effectively reduce the temperature after the turbocharged engine is stopped. It is a good protection for the engine. Suggest deal with it in time to avoid bigger problems, when you find a problem with the vehicle cooling system.