What Components Make Up the Engine Lubrication System?
3 Answers
Engine lubrication system consists of oil pump, pressure regulator valve, oil pickup, oil filter, oil cooler, oil pressure sensor, nozzles, oil passages, and crankcase ventilation filter. The lubrication system serves functions such as lubrication, cooling, cleaning, sealing, and rust prevention, with lubricating oil playing a crucial role. During engine operation, the lubrication system continuously delivers an adequate amount of clean oil at appropriate temperature to all friction surfaces of transmission components, forming an oil film with lubricating effect. This not only effectively reduces friction between parts but also minimizes power loss, ensuring engine longevity while maintaining optimal operating conditions.
As an old car enthusiast, I've worked on many engines and am familiar with the basic components of the lubrication system: it mainly consists of the oil pan, oil pump, oil filter, and oil passages. The oil pan stores the oil at the bottom of the engine. When starting, the pump hums into action, drawing the oil up, which then passes through the filter to remove metal shavings and dirt. The oil is then delivered through the passages to coat bearings, pistons, and other friction points with a protective oil film, reducing wear and protecting the machine. Inadequate lubrication can cause the engine to overheat and produce abnormal noises, shortening its lifespan. I've also noticed that the filter tends to clog and needs regular replacement, and if the oil pump fails, oil pressure drops. Routine car maintenance is simple—check the dipstick frequently, change the oil every 5,000 kilometers, and the system will run smoothly, making the car quiet and durable. Additionally, some high-performance cars are equipped with oil coolers to dissipate heat and prevent overheating during long trips, which is a bonus for the system.
Driving for decades, I consider the lubrication system the lifeblood of the engine. The core components are just a few: the oil pan holds the oil, the oil pump pressurizes it, the filter cleans it, and the oil passages deliver it. The oil pan is like a big reservoir—once the pump starts, it circulates the oil. The filter removes impurities like sifting sand, and the oil passages act as veins, spreading oil throughout the engine to lubricate parts. Without it, the engine would clatter and wear out quickly. Once, I forgot to change the oil, the filter clogged, and the oil pressure alarm went off—nearly burning out the bearings. The repair was a hassle. Since then, I’ve stuck to regular maintenance: choosing quality oil, ensuring normal oil pressure, and keeping the system efficient to reduce friction. Good lubrication means a stable ride and lower fuel consumption. Oil viscosity changes with temperature—slightly thinner oil in summer ensures smoother lubrication, which is also a key point.
