摘要
采集增压直喷柴油机在不同喷油策略及废气再循环(EGR)率下排放颗粒物,使用IMPROVE(Interagency Monitoring of Protected Visual Environment)协议热光反射法对其碳质组分进行试验研究.结果表明,推迟喷油提前角、降低共轨压力以及增加EGR率均能提高燃空当量比;当量比的上升增加了TC(Total Carbon)的排放,同时降低LowTemp-EC(Elemental Carbon)/HighTemp-EC比和OC(Organic Carbon)/EC比;OC组分中,挥发性OC1所占质量比例最高;EC组分中,HighTemp-EC在低负荷时几乎不存在,而高负荷时相对较多.
The IMPROVE TOR analysis method was used for experimental study on the carbon compounds of particle emissions from a turboeharged direct injection diesel engine under different fuel injection strategy and EGR rate. The results show that the delay of fuel injection, increasing of injection pressure and EGR rate result in an equivalence ratio increase, leading to high TC emissions, but cause a decrease in LowTemp-EC/HighTemp-EC ratio and OC/EC ratio. The volatile OC fraction is the highest in OC High Temp-EC is absence at low load but is abundant at high load.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2013年第11期1745-1751,共7页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金重大国际合作项目(51210010)
国家自然科学基金资助项目(51006067)
关键词
颗粒物
当量比
有机碳
元素碳
particulate matter equivalence ratio organic carbon elemental carbon
