柴油机燃用生物柴油的氮氧化物排放特性  

Nitrogen Oxides Emission Characteristics of Biodiesel for Diesel Engine

作　　者：李博[1] 楼狄明[1] 谭丕强[1] 胡志远[1] 张斌[1] 

机构地区：[1]同济大学

出　　处：《汽车技术》2008年第9期5-9,共5页Automobile Technology

基　　金：国家高技术研究发展计划(863计划)项目(2066AA11A1A2)

摘　　要：研究了某直喷式柴油机分别燃用5种不同生物柴油掺混比例的混合燃料时NOx排放以及NO、NO2、N2O等氮氧化物主要组分的排放特性。结果表明,NOx排放曲线形态较为接近,低负荷时差异较小,随负荷增加,其排放差异增大;NO排放随着负荷上升而增加;NO2排放在低负荷和高负荷均较低,中间负荷最高;N2O在低负荷时有一定生成量,中高负荷N2O排放几乎为零;随生物柴油掺混比例的提高,NOx和NO排放增加幅度增大,NO2排放有所降低。Emission characteristic of main components of NO.N02 and N20,etc.for a kind of direct injection diesel engine that is fuelled with five biofuels that blended with different mixing ratio is analyzed.The results show that,the NOx emissions of different biodiesel blends shows no great differences,and as load increases,the differences become relatively greater;whereas the NO emission increase as load increases,N02 emission is comparatively low during low and high load, while it is highest during medium load;N20 is mainly generated during low load;while during mid and high load,it is approximately zero;as the blending proportion of biodiesel increases,the NOx and NO emission increase greatly,while NO2 emission decreases.

关 键 词：柴油机 生物柴油 氮氧化物 排放特性 

分 类 号：U464.172[机械工程—车辆工程]