喷油定时对燃用生物柴油发动机经济性与排放的影响  

Effects of fuel injection timing on economy and emissions of diesel engine fuelled with diesel/biodiesel blends

作　　者：马志豪[1] 王鑫[1] 张小玉[1] 徐斌[1] 吴健[1] 

机构地区：[1]河南科技大学车辆与动力工程学院,洛阳471003

出　　处：《农业工程学报》2011年第2期151-155,共5页Transactions of the Chinese Society of Agricultural Engineering

基　　金：中国博士后科学基金(20090460860);河南科技大学博士启动基金(09001327);河南省科技创新杰出人才计划(104200510006)

摘　　要：为研究黄连木籽生物柴油对发动机性能的影响,在一台YTR3105直喷式柴油机上进行了不同喷油定时下燃用黄连木籽生物柴油-柴油混合燃料时的经济性及排放特性试验。结果表明:在相同工况下,4种燃料的最经济喷油定时几乎相同,即最大扭矩工况为上止点前110CA左右,标定工况为上止点前120CA左右。CO和碳烟排放随喷油定时的增大有先降低又升高的趋势。随喷油定时的增大,THC排放降低,而NOX排放大幅增加。CO、THC及碳烟排放均随生物柴油掺混比的增加而降低;B10、B20的NOX排放比柴油低,而B30的NOX排放与柴油相当。最经济喷油定时与燃料类型无关,生物柴油混合比例对发动机的排放影响较大。In order to investigate the effects of pistacia chinensis bunge seed biodiesel on the performance of diesel engine,the economy and emissions test was carried out at the YTR3105 direct injection diesel engine fueled with pistacia chinensis bunge seed biodiesel-diesel blends.The results showed that the most economic fuel injection timing of the blends was almost the same at different operating conditions,namely,the most economic fuel injection timing of the blends was 11° crank angle before top dead center at the maximum torque condition and 12° crank angle before top dead center at rated condition.With the increase of fuel injection timing,both CO and smoke emissions of the engine decreased firstly and then increased,and THC emissions decreased,while NOX emissions increased greatly.CO,HC and smoke emissions decreased with the increase of the proportions of biodiesel in the blends.The NOX emissions of the engine fueled with B10 and B20 were lower than that of diesel,but higher when fueled with B30.It is concluded that there is no relationship between the most economic fuel injection timing and the fuel type,but the proportions of biodiesel in the blends greatly affect on the emissions of diesel engine.

关 键 词：柴油机 生物柴油 经济性分析 喷油定时 黄连木籽 

分 类 号：TK4[动力工程及工程热物理—动力机械及工程]