Patent ID: 7726273

Claim:
A diesel engine comprising: an engine block having at least one piston bore; a cylinder head to be clamped to said block; at least one cylinder liner removably disposed in said piston bore of said block and surrounded by a water jacket of said block in direct communication with an outer surface of said at least one liner; and wherein said cylinder liner is fabricated of a high strength, corrosion resistant grade of steel and wherein said cylinder liner has an inner surface with a texture roughness descriptor, TRD=5 Rvk(100−Mr2) of between 50 and 400 μm, and including at least one piston disposed in said at least one cylinder liner and including at least one piston ring in operational sliding contact with said inner surface of said at least one cylinder liner, said inner surface and said at least one piston ring having relative hardnesses in the range of 10-20 Rc of one another, and including a coating applied to said inner surface of said at least one cylinder liner, and wherein said at least one liner has a compound average liner section thickness set at about 1.5 to 4% of the bore diameter of said at least one cylinder liner.