油酸甲酯影响柴油机油清净性模拟研究

Simulation Research on Detergency Effect of Methyl Oleate to Diesel Engine Oil

在柴油机油中加入不同比例的油酸甲酯,采用变温成漆板模拟实验,研究油酸甲酯对柴油机油清净性的影响,结果表明,油酸甲酯明显加速了柴油机油氧化变质。随着油酸甲酯加入比例提高、铝板板温增加,柴油机油清净性随之变差。不同比例的油酸甲酯对不同质量等级的柴油机油清净性影响有所不同,其由大到小的顺序为10%油酸甲酯+CD 15W/40,5%油酸甲酯+CD 15W/40,CD 15W/40,10%油酸甲酯+CF-4 15W/40,5%油酸甲酯+CF-4 15W/40,CF-4 15W/40。

Methyl oleate was incorporated into diesel engine oil in different proportions. And then detergency effect of methyl oleate to diesel engine oil was investigated through simulation experiment. The results indicate that, due to easy self-oxidation, the methyl oleate can promote the diesel engine oil degradation; with increasing of methyl oleate dosage and aluminum plate temperature, the detergency effect becomes worse. Different content of methyl oleate has different effect on detergency of different quality levels diesel engine oil. And the influencing extent from large to small are 10% methyl oleate ＋ CD 15W/40, 5% methyl oleate ＋ CD 15W/40, CD 15W/40, 10% methyl oleate ＋ CF-4 15W/40, 5% methyl oleate ＋ CF-4 15W/40, CF-4 15W/40.