What are the methods of engine lubrication?

[ElijahDella]

Engine lubrication methods include: 1. Pressure lubrication: Using an oil pump to continuously deliver lubricating oil under a certain pressure to the friction surfaces, forming an oil film of a certain thickness that can withstand mechanical loads without rupturing, effectively separating the two friction components to achieve reliable lubrication; 2. Periodic lubrication: For less critical and scattered components, lubrication is achieved by periodically applying grease; 3. Splash lubrication: Utilizing certain moving parts of the engine, primarily the crankshaft and camshaft, to splash oil droplets and mist onto friction surfaces for lubrication. The lubrication intensity of various engine components depends on their environment, relative motion speed, mechanical load, and thermal load.