Structure of automobile water pump

The basic structure of automobile water pump by the pump shell, a connecting disc, or pulley, water pump shaft and bearing or shaft bearings, water pump impeller and the water seal device parts constitute. Centrifugal pump is widely used in automobile engine.

Principle of automobile water pump

A plurality of for circulating cooling water channel in the automobile engine cylinder, and placed in front of an automobile radiator, commonly known as the water tank through a water pipe is connected, constitute a large water circulation system, in the engine on the outlet, is equipped with a pump, driven by the fan belt, put out the engine block in the channel of the hot water pump, the pump into the cold water. In the next to the water pump and a thermostat, car has just started when cold car, do not open, cooling water not through the water tank, only in the engine cycle (commonly known as the small cycles), engine temperature to be reached more than 80 degrees, open, inside the engine hot water is pumped into the water tank, car forward when the cold wind blowing tank heat away.

Pump flow test

Pump flow test shall be carried out on a special test bench, driven by the test rig to drive the pump rotation, observe whether the amount of water in accordance with the standards of the factory or whether there is leakage phenomenon.

Inspection of working condition of water pump

Open the radiator water cover, to slow the engine speed; inspect the water cycle of the cooling water in the mouth; if continues to accelerate, the impeller does not skid, pump work abnormal, conversely, pump problems, when not easy to observe the circulation cooling water from the water filling mouth available another method: let the engine at high temperature when the flameout, and quickly remove the automobile cylinder head leading to the radiator water chamber joint of the hose, usable cloth regiment the water feeding ventricle connector plug from the water outlet to the radiator filling the cooling water. Then start the engine, like inside the cylinder water jacket and a heat sink in the water, pump out hose extraoral about 200ml impeller does not skid, indicating that the pump is working properly; otherwise, the exception.