What are the main functions of the engine lubrication system?

[DelSophia]

The main functions of the engine lubrication system are: forming an oil film between moving parts to reduce friction, cooling by utilizing the fluidity of the oil, cleaning through circulating oil flow, sealing by leveraging the viscosity of the oil, preventing rust, and absorbing vibrations between moving components to reduce noise and extend the engine's service life. Additionally, the engine lubrication system continuously supplies oil to the friction surfaces of moving parts, forming a thin lubricating oil film to prevent direct friction between components, thereby avoiding wear, overheating, increased motion resistance, and other adverse effects.