Water pump

The noise of water pump may be caused by the following aspects:

(1) The impact of the rotary vane on the cylinder block, the sound of the residual volume of the water pump and the pressure oil in the exhaust dead space;

(2) Impact of exhaust valve plate on valve seat and supporting parts;

(3) Echo and bubble cracking sound in the box;

(4) Bearing noise;

(5) Noise caused by a large amount of gas and oil impacting the oil baffle;

(6) Others. Such as the noise caused by the drive, the fan noise of the air cooling water pump, etc.

(7) Motor noise is a crucial factor.