重负荷柴油机油抗磨性能模拟评价方法的研究

摘要

重负荷柴油机油的更新换代对油品抗磨性能的要求越来越高.在实验室针对Mack T-9发动机试验工况对评价油品抗磨性能的模拟试验方法进行了筛选;并对重负荷柴油机油常用的添加剂对油品抗磨性能的影响规律进行了探讨.结果表明:采用SRV试验方法评价油品抗磨性能较为适宜;在研制体系中适当增加二烷基二硫代磷酸锌用量和使用合适的抗磨剂可以有效地提高油品的抗磨性能.%With the upgrading of heavy-duty diesel engine oil, the requirement for properties of engine oil is strengthening, especially for antiwear property.Thus, selecting optimum antiwear testing method in lab to simulate the operation conditions of Mack T-9 engine test is essential for the development of heavy-duty diesel engine oil.Test results show that SRV bench test is suitable to be used to evaluate the antiwear properties of various diesel engine oils.Furthermore,the effect of five additives on the antiwear properties of heavy-duty diesel engine oil was investigated by SRV testing,and the results show that properly adding more zinc dialkyldithiophosphate and using suitable anti-wear agents could improve the antiwear performance of diesel engine oil significantly.