Насос водяной Gat Epica WP2134

A water pump (liquid pump) is a component of the liquid cooling system of internal combustion engines; a circulation pump that provides forced circulation of coolant along the system contours. The water pump plays an important role in the operation of the power unit, the failure of the pump in a matter of minutes leads to overheating of the engine and can cause serious breakdowns. Therefore, in case of malfunctions, the pump must be repaired or changed, and in order to make the right choice, it is necessary to understand the existing types of pumps, their design and principle of operation. All modern automotive water pumps are centrifugal pumps, they pump coolant into the system using a rotating multi-blade wheel (impeller). In such a pump, the impeller is located in a closed cavity with two nozzles: the inlet above the center of the impeller and the discharge at the periphery. The coolant enters the middle part of the impeller and is discarded by its blades to the periphery, acquires acceleration and is fed through the discharge pipe into the engine water jacket. Thus, a pressure difference is created between the supply and discharge pipes of the pump, which ensures the circulation of the coolant through the system. Usually, the pump is integrated into the cooling system between the radiator outlet and the intake pipe of the engine water jacket. That is, the liquid already cooled in the radiator passes through the pump, which reduces the thermal load on the unit and prolongs its service life. The design of the water pump is generally simple. The basis of the unit is a cast housing with pipes (inlet and discharge), inside which an impeller is located on the shaft. The impeller shaft is held by one or two bearings in the front wall of the housing, the entire structure is sealed with a self-compression seal that prevents the penetration of coolant into the bearing and its leakage from the pump housing. The oil seal has a spring, due to which it is always pressed against the pump body and provides the necessary degree of tightness. Also, a water reflector can be located inside, preventing water from entering the bearings from the inside. The pumps that exist today differ in the design of the impeller and housing, the method of installation on the engine, the type of drive and the presence/absence of a radiator cooling fan drive.