废气再循环改善生物柴油发电机的经济性和排放性

发布时间：2018-08-11 17:46

【摘要】：在单缸风冷四冲程柴油发电机上,采用0、16%、28%EGR(exhaust gas recirculation,废气再循环)率,分别以柴油和生物柴油为燃料进行了试验,测试并分析了经济性,NOx、HC、CO和烟度的排放性能。研究表明:生物柴油油耗高于柴油,在0、16%和28%EGR率时,生物柴油的体积油耗平均高出柴油约9%、10%和17%;与无废气再循环相比,16%和28%EGR率时,燃用柴油平均可减少NOx约17%和35%,燃用生物柴油平均可减少NOx约10%和24%,生物柴油的NOx排放量高于柴油平均约6.5%和17%;燃用柴油时随EGR率增大,HC的排放量增大,16%和28%EGR率时,生物柴油的HC排放低于柴油平均约6%和28.5%;28%EGR率时,生物柴油CO排放量低于柴油,平均降低约24%;随EGR率增大,生物柴油的烟度增大,燃用生物柴油在小负荷和中负荷时烟度高于柴油。
[Abstract]:On a single cylinder air-cooled four-stroke diesel generator, the diesel oil and biodiesel were used as fuel to test and analyze the economic emission performance of no _ XO _ C _ CO and smoke. The results show that the fuel consumption of biodiesel is higher than that of diesel oil, and the volume oil consumption of biodiesel is about 9% and 17% higher than that of diesel oil at 0 ~ 16% and 28%EGR ratio, and 16% and 17% higher than that without exhaust gas recirculation. Diesel fuel can reduce NOx by about 17% and 35% on average, and biodiesel can reduce NOx by about 10% and 24% on average. The NOx emission of biodiesel is higher than that of diesel fuel by about 6.5% and 17%. When diesel oil is burned, the emission of HC increases by 16% and 28%EGR rate increases by 16% with the increase of EGR ratio. When the HC emission of biodiesel is about 6% lower than that of diesel fuel, the CO emission of biodiesel is about 24% lower than that of diesel fuel, and the smoke of biodiesel increases with the increase of EGR rate. The smoke of biodiesel was higher than that of diesel at low and medium load.
【作者单位】：贵州大学机械工程学院;贵阳学院机械工程学院;
【基金】：国家自然科学基金(51366002) 贵州省科技厅自然科学联合基金(黔科合J字LKG[2013]57号) 贵州省教育厅优秀科技创新人才支持计划(2013071)
【分类号】：TE667;TM314

【共引文献】