Research actualities on materials and processes of engine piston parts and cylinder liner

For improving fuel efficiency and reducing exhaust emission, it is necessary to enhance the demands for materials selection and machining of the engine piston and cylinder liner. In the present paper, the research actualities and problems focused on materials and machining technologies of motors engine piston, piston ring and cylinder liner are reviewed. The development trend of the materials and process on engine piston parts and cylinder liner is discussed. And the performance, advantages and disadvantages of the engine piston parts and cylinder liner are also analyzed and discussed. The engine piston and cylinder liner are usually made of aluminum alloys while the piston ring is usually made of cast iron. In addition, both of the materials above are tending to composites and multiple high-alloy cast iron. The processing technologies of engine piston, piston ring and cylinder liner are mainly based on casting and surface treatment at the moment and for the near future.