Running surface of part of internal combustion engine and especially cylinder liner has friction reducing coating with thickness of especially less than 20 microns and is applied to running surface finished by honing

摘要

The running surface of a part of an internal combustion engine, especially a cylinder liner, has a friction reducing coating with a thickness of especially less than 20 microns. The coating is applied to the running surface which is finished by honing. The running surface consists of a ferrous material with a honed finish, whereby the coating is deposited from a gaseous phase. The coating is selected from the DLC, WC/C and NFC group.