A cylinder liner is a cylindrical part to be fitted into an engine block to form a cylinder. It is one of the most important functional parts to make up the interior of an engine. This is called Cylinder liner in Japan, but some countries(or companies) call this Cylinder sleeve.
Types of Cylinder Liners
*Dry Cylinder Liners. Dry cylinder liners are among the basic piston protectors. ...
*Wet Cylinder Liners. Wet cylinder liners protect the pistons in a different way than dry ones, but they are made from the same hardy material. ...
*Finned Cylinder Liners.
Cylinder liners may crack because of poor cooling, improper fit of piston or pistons, incorrect installation, foreign bodies in the combustion space, or erosion and corrosion. ... Particles of dirt between these surfaces cause air spaces, which are poor conductors of heat.
Cylinder liners are generally made of closed grained pearlitic cast iron, nickel CI, nickel- chrome CI, cast steel and forged alloy steel. The inner surface of the liner is heat treated to obtain a hard and smooth surface.