摘要
在发动机结构和参数未做改动的条件下,用4D160柴油机使用市售-10号柴油和甲醇柴油(添加甲醇体积比为20%的-10号柴油)分别进行100 h试验研究,研究甲醇柴油对发动机的动力性和经济性,摩擦磨损性能和清净性,以及发动机润滑油黏度、润滑油中金属元素含量变化的影响。试验结果表明:使用甲醇柴油燃料的发动机动力性、燃油经济性下降,在大负荷时燃油经济性下降更加明显;甲醇燃料燃烧时产生更多的酸性物质,使润滑油酸值增加较快,从而导致发动机磨损量增加,其中缸套部位的磨损量最大;在100 h实验中,不论是使用柴油还是甲醇柴油,润滑油的100℃运动黏度都呈下降的趋势,且使用甲醇柴油时润滑油黏度的下降幅度更大;使用甲醇柴油时发动机沉积物总质量比使用柴油的小,且发动机清净性评分略高。
In the condition that the engine structure and parameters have not been altered,the 100 h experimental study was carried out with the 4D160 diesel engine when using the commercial-10 diesel and the methanol diesel(-10 diesel with 20%methanol)as fuel oil.The dynamic and economic properties of the engine,the friction and wear properties,detergency and the change of metal content in the lubricating oil of the engine at different time points were compared and studied.The experimental results show that the power and fuel economy of the engine using methanol diesel are decreased,and the decrease of fuel economy is more obviously under heavy load.When methanol diesel is burned,more acidic substances are produced,which makes the acid value of lubricating oil increase rapidly,resulting in the increase of engine wear,and the wear amount of cylinder sleeve is the largest.In the 100 h experiment,the 100℃kinematic viscosity of the lubricating oil shows a downward trend when using diesel and methanol diesel as fuel oil,and there is a larger decrease of the viscosity of lubricating oil when using methanol diesel as fuel oil.When using methanol diesel as fuel oil,the total mass of engine deposits is smaller than that when using diesel as fuel oil,and the engine detergence score is slightly higher than that when using diesel as fuel oil.
作者
杨礼河
陈绪望
孙玉德
张建国
YANG Lihe;CHEN Xuwang;SUN Yude;ZHANG Jianguo(Internal Combustion Engine Research Institute,Tianjin University,Tianjin 300072,China;School of Mechanical Engineering,Tianjin University,Tianjin 300072,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2020年第2期1-6,共6页
Lubrication Engineering
基金
国家自然科学基金项目(51876141
51576139)
关键词
甲醇柴油
摩擦磨损
润滑油
清净性
methanol-diesel
friction and wear
lubricating oil
detergency
