The dry cylinder liner is characterized in that the outer surface of the cylinder liner is not in contact with the coolant. In order to obtain sufficient actual contact area with the cylinder, to ensure the heat dissipation effect and the positioning of the cylinder liner, the outer surface of the dry cylinder liner and the inner surface of the cylinder bore of the cylinder bore have high processing precision, and are generally used. Interference fit.

The advantages of the dry cylinder liner are that it is not easy to leak water, the rigidity of the cylinder structure is large, there is no cavitation, the cylinder core distance is small, and the body quality is small; the disadvantage is that repair and replacement are not the heat dissipation effect is poor.