甲醇汽油对汽车发动机的影响.pdf

2011年 1月 第 36卷 第 1期 润滑与密封 LUBR ICATION ENGINEER ING Jan. 2011 Vol136 No11 DO I: 1013969 / j1 issn10254 - 0150120111011022 收稿日期 : 2010 - 06 - 30 作者简介 : 尹兴林 (1979—) , 男 , 工学硕士 , 工程师 , 主要从 事润滑剂开发研究和设备润滑节能工作. E2mail: linsic @ si2 na1com1cn. 甲醇汽油对发动机油低温性能的影响 尹兴林 1 　王　娇 2 　董元虎 3 (11陕西通用石油化工有限公司　陕西西安 710043; 21上海同济同捷科技股份有限公司　上海 201206; 31长安大学汽车学院　陕西西安 710064) 摘要 : 为考察甲醇汽油对发动机油低温性能的影响 , 通过向发动机油中添加甲醇汽油及其模拟燃烧产物甲酸、甲 醛 , 分析其对油样的倾点、凝点、低温动力黏度的影响。结果表明 : 甲醇汽油及其模拟燃烧产物甲醛、甲酸对油样的倾 点、凝点影响较小 ; 随着甲醇添加量的增加 , 油样的低温动力黏度有增大的趋势 ; 在甲酸质量分数为 018% ～112%时 , 油样的低温动力黏度值较大 , 但其增大的趋势平缓。因此甲醇汽油及其模拟燃烧产物对发动机油的低温性能影响不大。 关键词 : 甲醇汽油 ; 发动机油 ; 低温性能 中图分类号 : TE62613　文献标识码 : A　文章编号 : 0254 - 0150 (2011) 1 - 085 - 3 The Effect of M ethanol Gasoline on Low Temperature Performance of Eng ine O il Yin Xing lin 1 　W ang J iao2 　Do ng Yuanhu3 (11Shannxi Tongyong Petrochemical Co. ,L td, Xi’an Shaanxi 710043, China; 21Tongjie Innova Engineering Technology Co. , L td, Shanghai 201206, China; 3. School of Automobile, Chang’an University, Xi’an Shaanxi 710064, China) Abstract: In order to study the effect of methanol gasoline on the low temperature performance of engine oil, methanol gasoline and its simulated combustion p roducts of formaldehyde and form ic acid were added into the engine oils, and the pour point, solidification point and low temperature dynam ic viscosity of the oil samp les were analyzed. The results show that the pour point and solidification point have little change with adding methanol gasoline and its simulated combustion p roducts of formaldehyde and form ic acid to the oil samp les. The low temperature dynam ic viscosity has slight increase with the increase of methanol in methanol gasoline, and it is high as the mass fraction of form ic acid is between 018% ～112% , but the whole increase tendency is gentle with the increase of form ic acid. So the methanol gasoline and its simulated com2 bustion p roducts have little influence on the low temperature performance of engine oils. Keywords:methanol ga