Cylinder Sleeve/Liner

Car make:HAFEI,CHANA,DFM,CHANGHE,WULING. The cylinder surface due to the role of high pressure gas and high-speed movement of the piston and easy to wear contacts. To improve the wear resistance of the cylinder and extend the life of the cylinder and the cylinder have a different structure and surface treatment. Cylinder structure, there are three: no cylinder liner, dry cylinder liner type, moisture cylinder type. No cylinder sleeve body that is, not embedded in the body of any liner, processed directly in the cylinder body, the advantage is the cylinder center distance can be shortened, so that the body size and quality reduced. But the cost is higher. Dry cylinder liner and the coolant does not contact a wall thickness of 2 3mm, outer surface of the bracket hole and the cylinder liner surface shall be finished to ensure the necessary bit-type precision and easy removal. Advantage is that the body rigidity, the cylinder center distance is small, light weight, simple process. Drawback is the heat transfer is poor, uneven temperature distribution, prone to local deformation. Wet cylinder liner wall cooling liquid in direct contact with the wall thickness of 5 8mm, with the implementation of upper and lower positioning ring radial position, axial location by the Ministry of the cylinder flange and the body put on the top of the corresponding bearing surface with the implementation. Wet cylinder liner has the advantage of not sealing the water jacket on the body, easy casting, good heat transfer, temperature distribution more uniform, easy to repair, do not remove the engine from the vehicle can replace the cylinder sleeves. The disadvantage is the body stiffness is poor, easy to leak.