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用电子扫描透镜(SEM)、粒径分析仪对实验室制得的油溶性纳米铜颗粒进行了分析。通过摩擦实验确定了作为SF15W/40汽油机油添加剂纳米铜颗粒的最佳添加量。通过行车试验对添加纳米铜颗粒的机油与参比机油的理化参数、金属含量及油耗进行了比较。结果表明:纳米铜颗粒在基础机油中具有良好的分散性,平均粒径约16.8nm。机油中纳米铜颗粒的最佳添加量为0.8%。行车过程中,纳米铜颗粒机油的黏度、酸值、闪点的变化很小,因而有更好的抗氧化性和抗磨性;行车4000km后,油中Fe元素含量为26.78mg/kg,而参比油此时达到66.93mg/kg。添加了纳米铜颗粒机油的车辆具有较低的百公里油耗,最大节油率15.1%。
The laboratory prepared oil-soluble nano-copper particles were analyzed by scanning electron microscopy (SEM) and particle size analyzer. Through friction experiment, the optimal dosage of nano-copper particles as SF15W / 40 gasoline engine oil additive was determined. The driving test was conducted to compare the physical and chemical parameters, the metal content and the fuel consumption of the engine oil and the reference engine oil added with nano-copper particles. The results show that: nano-copper particles in the base oil has good dispersion, the average particle size of about 16.8nm. The optimal amount of nano-copper particles in oil is 0.8%. During the driving process, the viscosity, acid value and flash point of nano-copper particle oil have little change, so they have better anti-oxidation and anti-wear properties. After driving for 4000km, the content of Fe in oil is 26.78mg / kg, The reference oil now reaches 66.93 mg / kg. Vehicles with nano-copper particle oil have lower fuel consumption of 100 km and the maximum fuel-saving rate is 15.1%.