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The Working Principle Of The Auto Parts Water Pump

Jun 19, 2017

     In the car engine cylinder, there are a number of water for the cooling water circulation, and placed in front of the car radiator (commonly known as water tank) connected through the water pipe to form a large water circulation system, the engine on the outlet, There is a pump, driven by the fan belt, the engine cylinder water pump out of the hot water, the cold water pumped. In the pump next to a thermostat, the car just started (cold), do not open, so that the cooling water does not pass through the tank, only in the engine cycle (commonly known as small cycle), until the engine temperature reaches 95 degrees When the open, the engine hot water was pumped into the water tank, the car before the cold wind blowing through the tank, take away the heat. Automotive engines are widely used centrifugal pumps. Its basic structure consists of pump shell, connecting plate or pulley, water pump shaft and bearing or shaft bearing, pump impeller and water seal device and other parts, is the main component of the car.Auto Parts Water Pump

    The engine rotates the pump bearing and the impeller through the pulley. The coolant in the pump is rotated by the impeller and is thrown to the edge of the pump shell under the action of centrifugal force, and a certain pressure is generated and then discharged from the outlet or water pipe. The center of the impeller is thrown out of the coolant and the pressure is reduced. The coolant in the tank is sucked into the impeller through the water pipe under the pressure difference between the inlet of the pump and the center of the impeller to realize the reciprocating circulation of the coolant.Auto Parts Water Pump

    The bearing that supports the pump shaft is lubricated with grease, so it is necessary to prevent the grease from leaking to grease and to prevent the grease from leaking. Water pump to prevent leakage of sealing measures are water seal and gasket. The water seal seal ring and the shaft are fitted between the impeller and the bearing through the interference fit, and the water seal seal is tightly pressed on the shell of the pump so as to achieve the purpose of sealing the coolant.The pump housing is connected to the engine through a gasket and supports moving parts such as bearings. There is also a drain hole on the pump housing, located between the water seal and the bearing. Once the coolant leaks through the water seal, it can leak from the drain hole to prevent the coolant from entering the bearing chamber and damage the bearing to lubricate and cause corrosion of the component. If the coolant is still present after the engine has stopped, it indicates that the water seal has been damaged.Auto Parts Water Pump