优能120纳米冷却液对油-电混动车运行热效率的影响  

Effect of Ucan-120 Nano-coolant on Thermal Efficiency of the Oil-electric Hybrid Vehicle

作　　者：罗逸[1] 徐长明 何延 辛莎 田力 LUO Yi;XU Changming;HE Yan;XIN Sha;TIAN Li(School of Chemistry and Chemical Engineering,Huazhong University of Science and Technology,Wuhan Hubei 430074,China;Wuhan Ucan Nano Fluid Technology Co.,Ltd.,Wuhan Hubei 430014,China)

机构地区：[1]华中科技大学化学与化工学院,湖北武汉430074 [2]武汉优能纳米流体技术有限公司,湖北武汉430014

出　　处：《汽车零部件》2020年第2期61-63,共3页Automobile Parts

摘　　要：采用台架试验方法评估了在改变发动机进口温度、功率及转速条件下,优能120纳米冷却液对油电混动车运行热效率的影响。结果表明:温度由90℃切换至95℃时,发动机的出口温度为108℃,比参比防冻液要高9.29℃,此时平均油耗下降11.85%,最大油耗下降18.1%,发电效率提高0.52%,并且入口温度提高后其增加的油耗量仅占防冻液的20%。热机效率的提高是纳米冷却液提升了气缸工作温度,高沸点与高换热率降低了流体由于汽化产生气阻与热损失,及"发动机高温燃烧→水箱快速散热→发动机高温燃烧"周期性循环热平衡运行机制三者共同作用的结果。试验出现过热停机现象是由于发动机进口温度被恒定至设定值,故流经水箱的纳米流体的快速降温作用无法体现所致。The influence of Ucan-120 nano-coolant on the thermal efficiency of oil-electric hybrid vehicle was evaluated by bench test under the condition of changing the inlet temperature, power and speed of engine. The results show that when the temperature is switched from 90 to 95 ℃, the outlet temperature of the engine is 108 ℃, which is 9.29 ℃ higher than the reference antifreeze fluid. At this time, the average fuel consumption decreases by 11.85%, the maximum fuel consumption decreases by 18.1%, the power generation efficiency increases by 0.52%, and increased fuel consumption is only 20% to that of antifreeze when the inlet temperature increases. The improvement of thermal engine efficiency is the result of nano-coolant raising the working temperature of cylinder, high boiling point and high heat transfer rate reducing the gas resistance and heat loss caused by vaporization of fluid, and the heat balance operation mechanism of "engine high temperature combustion→water tank rapid heat dissipation→engine high temperature combustion" periodic cycle process. The phenomenon of over-heated shutdown in the test is due to the inlet temperature of the engine to a set value, and the rapid cooling effect of nano-fluids flowing through the water tank can not be reflected.

关 键 词：油电混动车 纳米冷却液 热机效率 节油 发电效率 

分 类 号：U469.7[机械工程—车辆工程]