添加乙醚和乙醇对发动机燃用生物柴油-柴油混合燃料排放性能的影响  

Effect of Diethyl Ether and Ethanol Additives on the Emission Characteristics of Biodiesel-diesel Blended Fuel Engine

作　　者：宋俊良[1] 袁杰[1] 

机构地区：[1]四川交通职业技术学院汽车工程系,四川成都611130

出　　处：《汽车零部件》2015年第11期55-58,共4页Automobile Parts

摘　　要：研究目的是评估使用乙醚和乙醇作为生物柴油-柴油混合燃料的添加剂时,对直喷式柴油发动机排放特性的影响。测试燃料分别为B30(体积分数为30%的生物柴油和70%的柴油),BE-1(体积分数为5%的乙醚,25%的生物柴油和70%的柴油)和BE-2(体积分数为5%的乙醇,25%的生物柴油和70%的柴油)。结果表明:与B30相比,BE-1的燃油消耗率略低;在发动机大负荷时,BE-1和BE-2排放的烟度急剧减少;BE-2的氮氧化物(NOx)排放量略高,BE-1和BE-2的碳氢化合物(HC)排放量略高,但一氧化碳(CO)排放量稍低。An experimental investigation was conducted to evaluate the effects of using diethyl ether and ethanol as additives into biodie- sel-diesel blends on the performance, emissions characteristics of a direct injection diesel engine. The test fuels were denoted as B30 （ 30% biodiesel and 70% diesel in volume）, BE-1 （5% diethyl ether, 25% biodiesel and 70% diesel in volume） and BE-2 （5% ethanol, 25% biodiesel and 70% diesel in volume） respectively. The results indicate that： compared with B30, there is slightly lower brake specific fuel con- sumption （BSFC） for BE-1; drastic reduction in smoke is observed with BE-1 and BE-2 at higher engine loads; nitrogen oxide （NOx） emis- sions are found slightly higher for BE-2; hydrocarbon （HC） emissions are slightly higher for BE-1 and BE-2, but carbon monoxide （CO） are slightly lower.

关 键 词：生物柴油-柴油混合燃料 乙醇 乙醚 排放特性 

分 类 号：U464.172[机械工程—车辆工程]