The water pump is an important component of the engine cooling system of the automobile, which is mainly responsible for driving the coolant circulation, absorbing the excess heat of the engine and transferring it to the outside air through the heat dissipation device to avoid the engine temperature being too high. If the engine temperature is too high, the lubrication ability of the engine oil will decrease, resulting in the aggravation of wear and tear of the parts, and the temperature will be high to a certain value, which will lead to serious failures such as engine cylinder pulling or tile burning, and eventually lead to the engine burning and scrapping.
There are two types of water pumps: traditional mechanical water pumps and electronic water pumps. The coolant in the pump is driven by the impeller to rotate, and is used to the edge of the pump housing under the action of centrifugal force, and at the same time generates a constant pressure, and then flows out from the outlet channel or water pipe.
The pressure in the center of the impeller is reduced due to the cold removal liquid being thrown out, and the coolant in the water tank is sucked into the impeller through the water pipe under the action of the pressure difference between the water pump inlet and the center of the impeller, so as to realize the reciprocating circulation of the coolant.
The working principle of the electronic water pump is as follows: the ECU (electronic control unit) adjusts the size of the duty cycle through PWM (pulse width modulation) according to the feedback signal such as water temperature, and transmits the signal to the controller inside the electronic water pump, and the controller controls the motor rotation according to the duty cycle, thereby driving the impeller rotor to rotate, and then realizing the coolant circulation.
The traditional mechanical water pump works based on the engine speed, which leads to the fact that even in the cold start and low load and high speed conditions with low flow requirements, it still needs a lot of power to drive, and the cooling capacity provided at this time is much greater than the actual cooling energy required by the engine, and a lot of power is required to drive.
In this way, a large part of the cooling capacity of the mechanical water pump is wasted, which not only consumes a lot of additional driving capacity, but also has a certain difference between the cooling effect and the actual needs of the engine, which will cause the power and economy of the engine to decline. The electronic water pump can precisely control the flow rate by cooling the coolant demand of the unit.
With the development of science and technology and the high demand for fuel efficiency, more and more applications of electronic water pumps have begun to be used in hybrid and new energy engines in the market.
Previous Product:
Next Product:
