摘要
在一台高压共轨、涡轮增压中冷柴油机上进行了燃烧与排放特性试验,研究了柴油机NO2排放与燃烧特性之间的关系。试验结果表明:随着负荷的增大,高压共轨柴油机NO2排放浓度呈先减小后增大的趋势,而NO2比排放量均逐渐减小;NO2占NOx比排放量百分比为3.4%～33.1%,在低负荷时NO2/NOx增加明显;NO2比排放量和NO2/NOx排放与燃烧重心均呈一定的对数函数关系,具有较强的相关性,2 300r/min时相关系数R2≥0.90。
In a turbocharged inter-cooled high pressure common rail diese emission characteristic tests were conducted to investigate the relationship combustion characteristics. The results indicate that with load increase, concentration decreases firstly and then increases, while the The fraction of NO2/NO, is in the region of 3.4%-33.1% logarithmic function relation exists between the NO2 specific centers, and the correlation coefficients were over 0.90. 1 engine, the combustion and between NO2 emission and the engine NO2 emission NO2 specific emission monotonically decreases. obviously rising in low load region. A certain emission, fraction of NO2/NOx and combustion
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2013年第1期13-17,共5页
Chinese Internal Combustion Engine Engineering
基金
国家自然科学基金资助项目(51006085)
云南省应用基础研究面上项目(2010ZC091)
云南省教育厅科学研究基金项目(09C0180)
关键词
内燃机
柴油机
高压共轨
燃烧
二氧化氮
IC engine
diesel engine
high pressure common rail
combustion
nitrogen dioxide
