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- W4243486229 abstract "Publisher SummaryThis chapter discusses the physical properties of lubricants. The chapter explains the fundamental physical properties of lubricants such as viscosity, viscosity temperature dependence, viscosity index, pour point, flash point, volatility, oxidation stability, thermal stability, etc., together with the appropriate units and the ways of measuring these values. The parameter that plays a fundamental role in lubrication is oil viscosity. Different oils exhibit different viscosities. In addition, oil viscosity changes with temperature and pressure and the thickness of the generated oil film is usually proportional to it. The viscosity of lubricating oils is extremely sensitive to the operating temperature. With increasing temperature, the viscosity of oils falls quite rapidly. In some cases the viscosity of oil can fall by about 80% with a temperature increase of 25°C. From the engineering viewpoint it is important to know the viscosity value at the operating temperature, because it determines the lubricant film thickness separating two surfaces. The oil viscosity at a specific temperature can be either calculated from the viscosity-temperature equation or obtained from the viscosity-temperature ASTM chart." @default.
- W4243486229 created "2022-05-12" @default.
- W4243486229 date "1993-01-01" @default.
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- W4243486229 title "2 Physical Properties of Lubricants" @default.
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- W4243486229 doi "https://doi.org/10.1016/s0167-8922(08)70576-5" @default.
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