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Mengjuan Zhu

Do you know the water pump?

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    image.png.a5ddd67ab741d784bc41cde3599dd4c0.png

    Centrifugal pumps are widely used in automobile engines. The basic structure consists of a pump house, a connecting plate or a belt pulley, a water pump shaft and a bearing or shaft bearing, a pump impeller and a water seal, etc., The water pump is the main component of the automobile.

    The engine drives the pump bearing and the impeller rotation through the belt pulley, while the pump coolant is driven together by the impeller rotation. Under the action of centrifugal force, the coolant is flung to the edge of the water pump house, which creates a certain pressure and then flows out of the channel or water pipe.

    When the coolant is thrown out, the pressure at the center of the impeller is reduced. The coolant in the water tank is sucked into the impeller by the water pipe under the difference pressure between the pump inlet and the impeller center to realize the reciprocating cycle of the cooling liquid.

    The grease which should be prevented from the leakage of coolant is used for lubricating on the shaft bearings. The grease leakage should be prevented at the same time. The seals and gaskets are used for preventing leakage of water pump.

    If you need the water pump, please contact me [email protected]. It’s my pleasure to offer service for you.

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    • By Mengjuan Zhu
      According to the different driving mode, the pump is generally divided into mechanical pumps and electric pumps. Most of the engines now use mechanical pumps, and electric pumps have been used in some newly developed, technologically high engines, such as the BMW 6-series (E63) engine.
      (1)Mechanical pumps
          The mechanical water pump is driven by the engine crankshaft through the driving tape, and its rotational speed is proportional to the engine speed. The working methods of mechanical pumps have both advantages and disadvantages. When the engine is working under high speed and heavy load conditions, the heat produced by the engine, the high speed of the pump makes the circulating flow of the coolant increase, so that the cooling capacity of the engine can be improved. When the engine is working under low speed and heavy load, such as traction other vehicles or open air conditioner, the engine speed is low and the speed of pump is low. , which lowers the engine's cooling capacity.
      (2)Electric pumps
          Electric water pump has brushless electric pump and brush electric pump. The electric pump is controlled by the engine control unit through the current, which is not affected by the engine speed, and can be flexibly operated according to the actual cooling of the engine. Because the electric pump consumes very little engine power, the fuel consumption of the engine can be reduced after the electric pump is used.
          Thanks for your reading. If you have any questions, please contact me [email protected]
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