柴油机燃用生物柴油的非常规污染物排放特性  

Unregulated Emissions from a Diesel Engine Fueled with Biodiesel

作　　者：尤可为[1,2] 葛蕴珊[3] 何超[3] 王务林[2] 舒歌群[1] 郑贺悦[2] 郭家强[2] 王小臣[2] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072 [2]中国汽车技术研究中心,天津300162 [3]北京理工大学机械与车辆工程学院,北京100081

出　　处：《内燃机学报》2010年第6期506-509,共4页Transactions of Csice

基　　金：国家自然科学基金资助项目(50876013)

摘　　要：利用二次热解析-气相色谱/质谱联用方法,在一台涡轮增压直喷式柴油机上进行了燃用柴油、生物柴油(B100)及其掺混油(B20)的非常规排放特性研究。试验结果表明:燃用生物柴油可以有效降低柴油机芳香烃类物质和总挥发性有机物(TVOC)排放率,且降低幅度随着生物柴油掺混比例的增加而增加。在2,300,r/min全负荷工况下,燃用B100较燃用柴油的苯排放减少95%,甲苯排放减少70%,二甲苯排放减少80%,乙苯排放减少40%,总排放率降低64%,臭氧比反应活性减少。欧洲稳态测试循环(ESC)表明,使用B100和B20的发动机排气TVOC排放低于柴油,B20较柴油降低42.98%,B100降低53.23%。Using the Thermal Desorber-Gas Chromatograph-Mass Spectrometer（TD-GC/MS）,the unregulated pollutants emitted from a turbocharged direct-injection diesel engine were measured.Results show that emissions of aromatic compounds and total hydrocarbon are decreased with the increase of biodiesel.Using pure biodiesel,benzene emission reduces by 95%,toluene emission by 70%,xylems emission by 80%,ethylbenzene emission by 40% and total brake specific emission by 64% compared with those of diesel fuel at engine speed of 2,300,r/min and full load operating conditions.Biodiesel has lower ozone specific reactivity（SR）and is friendlier to environment than diesel.ESC test indicates that the emission of total volatile organic compounds（TVOC）is reduced by 42.98% and 53.23% in B20 blend and pure biodiesel compared with those of diesel fuelled engine.

关 键 词：柴油 生物柴油 非常规污染物 

分 类 号：TK464[动力工程及工程热物理—动力机械及工程]