Analysis on Viscosity Degradation for Aero-engine Lubricant Oil

As a kind of crucial materials used in aero-engine,aviation lubricant oil is of importance to aviation oils,and its lubricant properties mostly depend on the viscosity index and performance degradation. Analysis factors which impacted on viscosity of aero-engine lubricant oil,including lubricant base fluids,anti-oxidative agents,temperature,pressure,and so on, were studied. Particularly, the relationships between molecular constructures and lubricant properties were discussed. The research development on anti-oxidative agents in lubricating oils were investigated. The environmental influences on oil viscosity were summarized,such as temperature,pressure and shear force.