DZ9M389533020 Expansion Tank Assembly is a heavy truck auto parts for SHACMAN. It is a key component of the cooling system used in the automobile engine system, and its main functions and structures are as follows:

Function

Water and gas separation and equalization pressure: When the engine is working, steam will be generated in the heat dissipation system, and the expansion tank can separate and store these vapors, so as to balance the system pressure, prevent air resistance in the heat dissipation pipe, and ensure the normal operation of the heat dissipation system

Replenishment of water return: When the engine vibrates, air bubbles will be generated in the coolant, and the water-vapor separation of the expansion tank can reduce the resulting cavitation, while reducing air mixing through water replenishment to maintain the stability of the cooling system

Guarantee the pressure of the cooling system and relieve it safely: The lid of the expansion tank has a sealing and pressure relief function. The seal establishes a certain pressure to increase the boiling point of the coolant; When the system pressure is too large, the pressure relief valve will be opened to release the pressure in time to avoid the phenomenon of boiling the pot

Structure

Upper box and lower box: The upper box is provided with a water inlet, the lower box is provided with a water outlet, and the water guide pipe extends below the lowest water mark of the lower box to ensure that the gas will not be stirred into the cooling circuit when the water flow is large

Water pipe: The inside of the water guide pipe is connected with the water inlet to ensure that the water flow can be smoothly diverted when the water flow is large, and avoid gas agitation into the cooling circuit