摘要
对柴油机和汽油机进行了比较,分析了柴油机排气污染的特点,阐述了柴油机NOx和PM的生成机理,通过图形分析指出柴油机排放控制的主要对象、难点及解决的思路。还介绍了燃料改进、增压中冷、四气门废气再循环、排气后处理等排放控制技术。
This paper compares diesel engines with gasoline engines, analyzes the properties of diesel engine exhaust pollution, and elaborates the mechanism of NOX, and PM formation. The main objective, difficulties and approaches of diesel engine emission control are presented by analyzing figures. And the current emission controlling technologies like improvement of fuel, supercharging and intercooler, fourvalve exhaust gas recirculation, exhaust gas aftertreatment etc. are also introduced.
关键词
柴油机
排气污染
控制技术
diesel engines
exhaust mission
controlling technique
