内燃机油黏度特性和分类标准

Viscosity Characteristics and Classification Standard of Internal Combustion Engine Oils

内燃机油的黏度是影响其润滑性能的重要指标,包括低温启动黏度、低温泵送黏度、运动黏度和高温高剪切黏度等。介绍了内燃机油的黏度指标和试验方法,以及我国内燃机油分类标准的情况,解读了将于2019年7月1日实施的GB/T 14906-2018《内燃机油黏度分类》标准修订内容。

The viscosity characteristics are essential indexes for internal combustion engine oils,such as low-temperature cranking viscosity,low-temperature pumping viscosity,low-shear-rate kinematic viscosity and high-shear-rate viscosity.In this paper,the viscosity indexes of internal combustion engine oils were introduced as well as the test methods.The national standards and the revised contents of GB/T 14906-2018 were interpreted.