What are the lubrication methods of an engine?
2 Answers
The lubrication methods of an engine are: 1. Pressure lubrication: Using an oil pump to continuously deliver lubricating oil with a certain pressure to the friction surfaces, forming an oil film with sufficient thickness to withstand mechanical loads without breaking, effectively separating the two friction parts to achieve reliable lubrication; 2. Periodic lubrication: For some less critical and scattered parts, 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.
As a veteran driver with decades of experience, I must say the primary lubrication method for engines is the oil pressure lubrication system. When the vehicle starts, the oil pump begins operating, drawing oil from the oil pan, pressurizing it, and then delivering it to moving parts like crankshaft bearings and piston pins, forming a protective oil film. This reduces friction and prevents high-temperature wear. If the oil is old or the oil pump fails, leading to insufficient oil pressure and lubrication failure, the engine may produce abnormal noises or even stall. I remember once driving an antique car and forgetting to change the oil; sludge buildup caused inadequate lubrication, resulting in crankshaft wear and a costly overhaul of several thousand dollars. Nowadays, I recommend using full synthetic oil, regularly checking oil levels, and monitoring pressure sensors to maintain stable lubrication, prolong engine life, and make maintenance hassle-free.
