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3 内燃机油的选择原则3.1 选择内燃机油的一般规则从表1和表2中可以看到,内燃机油黏度等级的划分主要是为了适应内燃机工作时不同温度的需要,以保证润滑油膜的形成,而内燃机油品质等级的划分则主要是为了适应内燃机不同结构的需要,使内燃机油能长期使用而不变质,并保证内燃机有关零部件的正常工作。因此,在选用内燃机油时,必须同时考虑该两种分类中的内燃机油等级,以满足内燃机对内燃机
3 Principles of Choice of Internal Combustion Engine Oil 3.1 General Rules for Selecting Internal Combustion Engine Oil As can be seen from Table 1 and Table 2, the classification of internal combustion engine oil viscosity grades is mainly to meet the needs of different temperatures of internal combustion engine to ensure the formation of lubricant film. The classification of the quality of internal combustion engine oil is mainly to meet the needs of different internal combustion engine structure, so that long-term use of internal combustion engine oil without deterioration, and to ensure the normal operation of internal combustion engine parts and components. Therefore, the choice of internal combustion engine oil, you must also consider the two categories of internal combustion engine oil level to meet the internal combustion engine for internal combustion engine