| Home>Bearing knowledge>Inorganic engine smooth oil pollution and avoidance |
Pollution and avoidance of smooth oil in internal combustion engine
Source: Bearing network time: 2013-01-14
| /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089'; |
Keywords: Internal combustion engine, smooth oil, avoid pollution, the fundamental method, smooth oil, smoothing, sealing, eradicating and cooling in the internal combustion engine. If the smooth oil fails, it will accelerate the wear of the machine; even the cause of burning the tile and pulling the cylinder. How to avoid smooth oil pollution; extend its lifespan; reduce the wear and tear of the machine;
1 Variety of smooth oil contaminants and their damage to smooth oils contain various substances that are turbid in the working medium and are harmful to the life of internal combustion engine parts; such as solid particles, water, waste gas, diesel (steam) oil and pollution Energy, etc.
1) Solid particles. Solid particle contaminants are the most common type of contaminants in smooth systems. They contain metal chips that are not removed during cleaning and assembly, and are invaded from the outside during mechanical travel (or construction). Dust and debris; the grinding debris and corrosion shedding of the parts themselves and the sedimentation of oil oxidation and differentiation. These solid particles in the smooth oil are similar to the abrasives and penetrate into the moving parts. Surface; speed up the wear and tear of the parts; greatly shorten the life of the application.
2) water. Water is immersed in smooth oil; smooth oil becomes milky white; and agile oxidative enthalpy changes. Not only loses smooth effect; and corrodes metal appearance.
3) Exhaust gas. During the operation of the internal combustion engine; there is always a certain high temperature and high pressure exhaust gas from the combustion chamber into the crankcase. The exhaust gas contains water vapor and SO2. The water vapor condenses in the oil to form a foam; destroys the normal oil supply; this appearance Especially severe in winter; SO2 produces H2SO3 when it meets water; H2SO3 encounters O2 to form H2SO4; it will corrode the parts.
4) Chai (steam) oil. The smooth oil is mixed with diesel (steam) oil; it will make the smooth oil change. Pull the reclining æ æ ┰黾 ┰黾 辉 辉 ç¡• ç¡• ç¡• ç¡• ç¡• ç¡• ç¡• ç¡• 怀 怀 怀 怀 怀 怀 怀 怀 怀Hey.
5) Pollution energy. Pollution energy refers to smooth oil heat energy. Oil temperature is too low; smooth oil viscosity is high; fluidity is poor; oil pump sucking oil is difficult; together, the internal combustion engine is difficult to start; oil temperature is too high; smooth oil is changed. File stop æ ┰黾 ┰黾 辉 辉 æ•æ¶‘鱿 æ•æ¶‘鱿 æ•æ¶‘鱿 æ•æ¶‘鱿 赡Σ粱虬敫赡Σ 赡Σ粱虬敫赡Σ 赡Σ粱虬敫赡Σ 赡Σ粱虬敫赡Σ 赡Σ粱虬敫赡Σ 趸 趸 趸 趸 趸 趸 趸 趸 7.
2 The basic methods and methods to avoid smooth oil pollution 1) Selection of smooth oil. Select smooth oil with suitable viscosity and excellent quality; It is of great significance for the normal operation of internal combustion engine; extending the service life. Therefore, the fundamental principle of smooth selection is : (1) According to the load and speed selection. The load is high and the speed is low; for some large diesel engines, smooth oil with high viscosity should be used; and the load should be small with high speed; for example, gasoline engine should use smooth oil with small viscosity. (2) According to the area For the time zone and temperature, choose the winter cold zone; for example, the northeast and northwest regions should use smooth oil with low viscosity and low freezing point; the annual temperature is high; for example, the Jiangnan area should use smooth oil with slightly higher viscosity. (3 According to the wear condition of the internal combustion engine, the service life is long; the oil with larger viscosity is suitable for the larger wear of the parts; the new internal combustion engine can use the smooth oil with less viscosity. (4) The internal combustion engine equipped with the supercharger should be specially smooth. Oil. (5) According to the rules of the internal combustion engine application statement; select the smoothness of the specified trademark.
2) Smooth oil hygiene. When adding smooth oil, ensure the hygiene of the fuel filler and fueling vessel; avoid the invasion of dust and sand; protect the smooth oil filter on time; protect the air filter and fuel filter on time; avoid impurities Enter the crankcase from the cylinder.
3) Smooth oil temperature. The normal working temperature of smooth oil is 45~90°C. After the internal combustion engine starts, it should be preheated; when the standby oil temperature is higher than 45°C, it will be put into operation or travel. When the ambient temperature is high; the working time is long; smooth When the oil temperature is higher than 90 °C; it should be idle; after the temperature is lowered, work again.
4) Avoid mixing water into smooth oil. Avoid re-entering smooth oil when water is added. When the crankcase oil level is found to increase during work; the cause should be analyzed in time; check the operation status of the water seal, cylinder block and cylinder head. ; troubleshoot.
5) Avoid mixing fuel into smooth oil. Adhere to the normal operating temperature of the cooling system; the normal water temperature of the water-cooled internal combustion engine is 80~95 °C; the temperature of the cylinder head of the air-cooled internal combustion engine should be less than 120 °C. If the temperature is too high, the oxidation of the smooth oil will be accelerated; If it is too low, it will make the mixture entering the cylinder; a part of it will be condensed into a liquid and flow into the crankcase. Adhere to the outstanding working condition of the fuel system; timely check and adjust the oil supply early angle and fuel injection atomization quality of the high pressure pump and the injector; Avoid fuel atomization and vaporization, and flow into the smooth oil along the cylinder wall.
6) Avoid the pollution of the exhaust oil to the smooth oil. Correctly install the piston ring; the gap between the piston and the cylinder liner, the clearance between the valve and the conduit should be appropriate; adhere to the crankcase ventilation and seal.
7) Smooth oil replacement opportunity. Check the quantity and quality of smooth oil before each engine is started; think about replacement when one of the following conditions is present: when the oil dipstick is extracted; the smooth oil on the ruler is agile; or the smooth oil is dripping On paper; agile osmosis; clarify that smooth oil is too thin; use a finger to knead smooth oil; feel no smooth oil film and black; and fuel smell; smooth oil in the metal scraps and so on.
Replacement smoothing is usually after the completion of the new car or overhauled mechanical test; the diesel engine is 600h per operation; the gasoline engine is 400h per operation (about 14,000km); in winter or in summer, it only wins when it is oiled, does not change oil, and replaces oil with oil. Bad appearance.
8) Smoothing system. When replacing smooth oil, the smoothing system should be removed. The method is to heat the smooth and smooth old oil; participate in the mixture of hygienic smooth oil and diesel oil (4:1) to the bottom of the oil dipstick; The engine is idling for 3~5min and parked; add new smooth oil to the regular oil level.
Recommend to friends comments close window
| Bearing related knowledge |
| Selecting the "six major problems" of INA bearing demand thinking Terminology related to radial bearings; common terms and definitions for English-made thrust roller bearing bearings (7) SKF imported bearings exhibit the appearance of pseudo-Brinell indentation |
This article links to http://
Please indicate China Bearing Network http://
Previous:Application conditions and environmental conditions of SKF bearings Next edition: True and false imported bearing identification method
Utility Knife,Plastic Utility Knife,Mini Utility Knife,Aluminum Mini Utility Knife
Shangqiu Jinda Tools Co.,Ltd , https://www.jindameasur.com