What are the components of an engine lubrication system?
1 Answers
The engine lubrication system consists of an oil pump, pressure regulating valve, oil pickup, oil filter, oil cooler, oil pressure sensor, nozzles, oil passages, and crankcase ventilation filter. The function of the lubrication system is to continuously deliver an adequate amount of clean oil at the appropriate temperature to all moving parts' friction surfaces during engine operation, forming an oil film between these surfaces to achieve liquid friction. This reduces friction resistance, lowers power consumption, and minimizes component wear, thereby enhancing the engine's operational reliability and durability. Below is the classification of lubrication methods: 1. Pressure lubrication: This method supplies oil to friction surfaces under a certain pressure and is primarily used for lubricating heavily loaded surfaces such as main bearings, connecting rod bearings, and camshaft bearings. 2. Splash lubrication: This method utilizes oil droplets or mist splashed by moving parts during engine operation to lubricate friction surfaces. It is mainly used for lubricating lightly loaded surfaces such as cylinder walls, camshafts, lifters, valve stems, and rocker arms in the valve train. 3. Grease lubrication: This involves periodically applying grease through grease fittings to lubricate working surfaces of components like water pump and generator bearings.
