米勒循环对柴油机燃用生物柴油的性能研究  

Performance Research of Miller Cycles on Diesel Engine Fueled with Biodiesel

作　　者：郭琼琳[1] 姜峰[2] 李静[1] GUO Qiong-lin;JIANG Feng;LI Jing(Department of Vehicle Engineering Jinzhong Vocational and Technical College,Shanxi Jinzhong 030600,China;School of Mechanical and Automotive Guangxi University of Science and Technology,Guangxi Liuzhou 545006,China)

机构地区：[1]晋中职业技术学院车辆工程系,山西晋中030600 [2]广西科技大学机械与汽车工程学院,广西柳州545006

出　　处：《机械设计与制造》2024年第7期121-127,132,共8页Machinery Design & Manufacture

基　　金：广西自然科学基金项目(2013GXNSFAA019317)。

摘　　要：借助GT-Power软件实现某机车柴油机仿真模型的搭建,采用试验对仿真模型的准确性进行分析验证。研究在75%负载1000r/min工况燃用5种生物柴油B0、B10、B20、B50和B100,分析采用两种米勒循环对柴油机油耗、功率以及排放功能的影响。试验结果表明:柴油机功率发生变化拐点在30℃A米勒度处,油耗变化拐点在30℃A米勒度,碳烟排放发生变化拐点在20℃A米勒度,在该工况条件下NOx排放降低的效果较为显著。综合分析可知,在75%负载1000r/min工况条件下燃用B10生物柴油,米勒度为30℃A且变气阀重叠角米勒循环下柴油机表现最为佳。With the help of GT-Power software,the imitation model of a locomotive diesel engine is built,and the accuracy of the imitate model is research and verified through experiments.To fuel five biodiesel conditions B0,B10,B20,B50 and B100 of 1000r/min at 75%load,and the effect of two Miller cycles on fuel consumption,power and emission function of diesel engine is analyzed.The test results indicate that the following:the inflection point of diesel engine power change is at 30℃A Miller degree,the inflection point of fuel consumption change is 30℃A Miller degree,and the inflection point of soot emission change is 20℃A Miller degree.The effect of NOx emission reduction under this working condition more significant.Various performances of diesel engines were comprehensively studied.B10 biodiesel was used under the conditions of 1000r/min and 75%load,the Miller degree was 30℃A and the diesel engine had the best performance under the Miller cycle with the overlap angle of the variable valve.

关 键 词：生物柴油 大功率柴油机 性能优化 米勒循环 

分 类 号：TH16[机械工程—机械制造及自动化] TK421[动力工程及工程热物理—动力机械及工程]