【Daily Question】11.25 Essay Question: What are the functions of lubricating oil? (Answer any five of them.)

Answer: The functions of lubricating oil include: lubrication, cooling, flushing, force transmission, vibration reduction, rust prevention, shear resistance, and sealing.

Lubrication, cooling, cleaning, sealing, rust prevention, shock absorption

Reduce friction, facilitate heat exchange and cooling, flush, absorb vibrations, reduce noise, and lubricate.

【Daily Question】11.25 Essay Question: What are the functions of lubricating oil? (Any five of the following answers are acceptable.) There are five main benefits of lubricants: (1) Lubrication and reduction of frictional resistance: The function of lubricants is to lubricate the various components within an engine, creating a layer of oil between their surfaces in order to reduce frictional resistance and enable smoother operation. (2) Sealing function: The lubricating oil must create an effective seal between the piston rings and the cylinder to prevent gas leakage and the intrusion of external contaminants. Thereby providing protection. (3) Cooling function: During operation, heat or high temperatures are generated due to the friction between machine components; the role of lubricant is to cool down and reduce the engine’s temperature. (4) Cleanliness: Removes harmful impurities and insoluble substances that have not been burned from the machinery, thereby keeping these contaminants away from the lubrication surfaces and preventing the formation of sludge. (5) Corrosion prevention function: Lubricating oil creates an oil film that keeps the contacting parts fully separated, reducing the chances of contact and wear between components and preventing the metal surfaces from being corroded.

Functions of lubricating oil: lubrication, cooling, sealing, rust prevention, cleaning and degreasing.

It mainly reduces friction between the surfaces of moving parts, and also provides cooling, sealing, corrosion protection, rust prevention, insulation, cleaning, power transmission, and shock load elimination.

Cooling, sealing, corrosion prevention, rust prevention, insulation, power transmission, removal of impurities, etc

It primarily serves functions such as lubrication, cooling, rust prevention, cleaning, sealing, and cushioning.

What are the functions of lubricant? (Any five of the following may be answered) Lubricity, cooling capacity, sealing property, cleanliness, rust resistance

What are the functions of lubricating oil? 1) Lubrication function: The lubricant forms an oil film between the friction surfaces, thereby reducing dry friction ； 2) Cooling effect: The energy consumed due to friction during the operation of the pump is converted into heat. Under normal circumstances, most of this heat is carried away by the lubricating oil, while a small portion is dissipated into the surrounding environment ； 3) Flushing effect, to carry away the metal debris worn off during operation ； 4) Vibration damping: The lubricating oil forms an oil film on the friction surfaces, providing a certain degree of cushioning against the vibrations of the equipment. 5) Protective function: prevents rust and dust to protect the equipment. 6) Unloading effect: Due to the presence of an oil film between the friction surfaces, the load acting on these surfaces is distributed more evenly across the oil film. This effect of the oil film is known as the unloading effect