F-T柴油掺混醇醚燃料发动机的燃烧和排放特性  

Combustion and Emission Characteristics of Fuel which F-T Diesel Blends with Methanol and PODE

作　　者：李鹏 朱建军[1] 吴子龙[1] LI Peng;ZHU Jian-jun1;WU Zi-long(Department of Vehicle Engineering,College of Mechanical Engineering,Taiyuan University of Technology,Shanxi Taiyuan 030024,China)

机构地区：[1]太原理工大学机械工程学院车辆工程系,山西太原030024

出　　处：《机械设计与制造》2020年第10期15-20,共6页Machinery Design & Manufacture

基　　金：山西省自然科学基金:(201701D121125)。

摘　　要：基于F-T柴油、聚甲氧基二甲醚(PODE)、甲醇各自的理化特性,将三种燃料按照一定比例的掺混,以实现三种燃料的优势互补。F-T柴油比例固定不变,分别将PODE以10%、20%、25%、40%的百分比掺混到F-T柴油中,其余添加甲醇。使用AVL-Fire软件对掺混燃料的燃烧和排放特性进行仿真分析。研究了掺混燃料在不同工况下的燃烧和排放特性。结果表明:随着掺混燃料中PODE比例的升高,缸内燃烧压力无明显变化,压力峰值对应的曲轴转角基本保持不变,放热率曲线峰值降低,缸内最高燃烧温度降低;PODE的加入会导致掺混燃料的NOx排放量升高,排放量降低。Based on the characteristics of F-T diesel,polyoxymethylene dimethyl ethers and methanol,a mixed fuel be composed of those fuels in a certain proportion.The proportion of F-T diesel was fixed,and polyoxymethylene dimethyl ethers was added to F-T diesel in the proportion of 10%,20%,25%and 40%,and the rest was methanol.The combustion characteristics and emission characteristics of the mixed fuel under different operating conditions were simulated and analyzed by AVL-Fire software.The results show that,with the increase of polyoxymethylene dimethyl ethers content in the mixed fuel,the in-cylinder pressure remains unchanged;the crank angle position of the peak of in-cylinder pressure remains unchanged;the peak of heat release rate decreases;the maximum temperature in cylinder decreases.The emissions of soot can be reduced when polyoxymethylene dimethyl ethers is added to the mixed fuel,but the emissions of NOx are increased.

关 键 词：F-T柴油 聚甲氧基二甲醚 甲醇 燃烧特性 排放特性 

分 类 号：TH16[机械工程—机械制造及自动化] TK464[动力工程及工程热物理—动力机械及工程]