high viscosity index

The component and working principle of automatic transmission were introduced, the function and properties of automatic transmission fluid ( ATF) were elaborated in details, such as high viscosity index, wear protection, antifoaming properties, thermal oxidation stability, elastomer compatibility etc.

介绍了汽车自动变速器的构造和工作原理，详细阐述了自动传动液的功能以及粘度特性、摩擦特性、抗泡沫性、热氧化安定性、橡胶相容性等使用性能要求。

Study on producing high viscosity index lube base oils by catalytic hydrogenation

催化加氢生产高粘度指数基础油的探讨

The operation result showed that the lube base oil products with high viscosity index and low pour point were produced from the 2nd and 4th vacuum column side cuts and the deasphalted oil of Daqing crude oil.

结果表明，以大庆原油的减二线、减四线和轻脱沥青油为原料，得到了粘度指数高、倾点低的润滑油基础油产品。

Deeply refined base stocks with high viscosity index can also improve energy economy effect and retentivity.

深度精制的高粘度指数基础油的使用可以提高发动机油节能效果和保持能力。