Cylinder liner assembly and method of making the same

A cylinder liner assembly for an engine block, the cylinder liner assembly comprising:

• an inner wear cylinder having an inner surface forming a cylinder bore extending along a central bore axis, and an outer surface;
• wherein the inner wear cylinder is one of a metal or a ceramic material;
• a shell disposed radially outside of the outer surface of the inner wear cylinder relative to the central bore axis, wherein the shell is a fiber reinforced polymer;
• and
• a central layer disposed between the inner wear cylinder and the shell, wherein the central layer is a porous material having a plurality of open cells in fluid communication with each other, such that a fluid is capable of circulating through the plurality of open cells.

A method of manufacturing a cylinder liner assembly for an engine block, the method comprising:

• forming an inner wear cylinder to include an inner surface defining a cylinder bore extending along a central bore axis, and an outer surface;
• forming a central layer around the outer surface of the inner wear cylinder from a porous material having a plurality of open cells in fluid communication with each other, such that a fluid is capable of circulating through the plurality of open cells;
• and
• forming a shell around an outer surface of the central layer from a fiber reinforced polymer.