Cylinder Liner (Wet Liners) - camisas de cilindros
The cylinder liner of an internal combustion engine includes a wet-type upper portion and a dry-type lower portion. The upper (wet) portion of the cylinder liner is formed to include alternate thinner and thicker portions, the thicker portions strengthening the liner in the wet area and enabling the overall thickness of this portion of the liner to be smaller than would otherwise be possible. Further, the shapes involved by this construction provide a plurality of parallel annular flow passages by which the cooling fluid is directed in parallel paths around the upper portion of each of the cylinders from one side of each cylinder to the other side thereof.