Electric water pump is an important component of the automobile engine cooling system, 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 radiator to avoid excessive engine temperature. Too high engine temperature will reduce the lubricating capacity of the engine oil, leading to increased wear of the parts. High temperature to a certain value will lead to serious failures such as engine cylinder scuffing or bush burning, which will eventually lead to engine burning and scrapping.

The working principle of the electric water pump is as follows: The ECU (electric control unit) regulates the duty cycle through PWM (pulse width modulation) according to the feedback signals such as water temperature, and sends the signal to the controller inside the electric water pump. The controller controls the motor rotation according to the duty cycle, thus driving the impeller rotor to rotate, thus realizing the coolant circulation.

Composition of electric water pump:

Electric water pump is mainly composed of overcurrent unit, motor unit and electronic control unit. With the electronic control unit, the working state of the water pump can be adjusted at will, such as controlling the start/stop of the water pump, flow control, pressure control, anti-dry operation protection, self-maintenance and other functions. The working state of the water pump can be controlled by external signals. The power of the electric water pump is relatively small, generally below 1000W, and the motor is usually DC brushless motor.

The electric water pump has many advantages, such as compact structure, convenient use, powerful function, long service life, stable performance, low noise, low energy consumption, high efficiency, etc. Therefore, it is deeply favored by people in the industry. With the rapid development of industry, the application of electric water pump is more and more extensive, especially in the field of new energy vehicles. In addition, with the rapid development of science and technology, the application of micro-electric water pump will be a new reform in the fields of artificial intelligence, biotechnology and medical industry, which has far-reaching significance for the development of modern science and technology industry.

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