What are the three common lubrication methods used in lubrication systems?
3 Answers
The lubrication system generally employs three methods: pressure lubrication, splash lubrication, and periodic lubrication. In automobiles, pressure lubrication is typically used for components that endure significant forces and exhibit high relative motion speeds during operation, such as the crankshaft main bearings, connecting rod bearings, and wheel axle bearings. Pressure Lubrication: This method utilizes an oil pump to deliver lubricating oil under pressure to the friction surfaces of components, forming an oil film of sufficient thickness to withstand mechanical loads and ensure reliable lubrication. It primarily caters to high-speed and heavily loaded engine parts. Splash Lubrication: During engine operation, rotating components like the crankshaft and camshaft splash oil droplets or spray oil from holes in the connecting rods onto friction surfaces. This method lubricates components such as cylinder walls, cams, and piston pins. Periodic Lubrication: This involves the regular application of grease for lubrication. It is mainly used for components like generators, starters, and water pump bearings.
The lubrication system primarily employs three lubrication methods: First is pressure lubrication, where the oil pump pressurizes and forcibly delivers oil to critical areas requiring lubrication, such as crankshaft bearings, ensuring tightly fitted parts do not suffer excessive friction. Next is splash lubrication; as the engine operates, moving components like the connecting rod big end fling oil around, splashing it onto areas like the piston skirt and cylinder walls for lubrication. The third is oil mist lubrication, where oil evaporates or is atomized in high-temperature environments, dispersing with airflow to cover small crevices and components, providing comprehensive protection. This combination is efficient and effective, significantly extending engine life. I recall from driving older cars that neglecting oil changes would degrade lubrication, leading to oil burning issues, highlighting the importance of maintenance.
The three commonly used lubrication methods in the lubrication system are pressure lubrication, splash lubrication, and oil mist lubrication. Pressure lubrication relies on the oil pump to actively pressurize and deliver oil, precisely covering high-pressure points such as bearings. Splash lubrication depends on the mechanical movement to naturally carry and splash oil, handling large-area lubrication. Oil mist lubrication sprays oil mist to hard-to-reach corners through airflow. This division of labor can significantly reduce component wear and improve the overall efficiency of the engine. As a car enthusiast, I often remind everyone to choose engine oil with the appropriate viscosity to avoid oil passage blockage, making the car run more fuel-efficiently and smoothly.
