
Bimetallic cylinder liner is an engine component whose main function is to protect the cylinders of the engine. It is made of two layers of metal materials with different coefficients of expansion, usually the inner layer is copper or aluminum, and the outer layer is a high-temperature resistant alloy. When the engine is working, the inner metal will expand more than the outer metal due to the heat generated by combustion. This design can transfer heat to the outer alloy to prevent overheating of the inner layer, thereby protecting the cylinder wall from high-temperature wear and extending the engine life. At the same time, the bimetallic cylinder liner can also absorb some vibrations, improving the smoothness of engine operation. Overall, bimetallic cylinder liners are an effective combination of thermal management technology and vibration reduction measures, which are of great significance for improving engine performance and reliability.