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通过对程序ⅥB发动机台架试验新油和老化油的运动黏度、摩擦系数、钙元素浓度、总酸值和总碱值等理化性能分析,考察了程序ⅥB发动机台架试验老化对油品理化性能的影响。结果表明,在程序ⅥB发动机台架试验中油品运动黏度随老化时间的增加先下降后上升;油品的摩擦系数随老化时间的增加而增大,老化初期摩擦系数增大速度较快,老化后期摩擦系数增大速度减缓;老化造成油品钙元素浓度增大,老化初期油品钙元素浓度增大较快,后期油品钙元素浓度增大速度减缓;老化造成油品总酸值增大、总碱值下降。
Through the physical and chemical properties of the kinematic viscosity, friction coefficient, calcium concentration, total acid number and total base number of the new oil and the aged oil in the test of the ⅥB engine bench, the physical and chemical properties of the ⅥB engine bench were examined. Impact. The results show that the kinematic viscosity of the oil increases first and then increases with the increase of the aging time in the ⅥB engine bench test. The friction coefficient of the oil increases with the aging time, and the friction coefficient increases rapidly in the early aging stage. The friction coefficient increases slowly; aging causes the concentration of calcium in oil increases, the content of calcium in oil increases rapidly in early aging, the rate of increase of calcium in late oil slows down; the total acid value of oil increases due to aging, Total base number decreased.