The effect of different intake oxygen concentration and fuel injection timing on combustion and emission characteristics under low temperature combustion conditions were experimentally investigated on a 4cylinder turbocharged direct injection diesel engine fuelled with pure diesel.The results show that,the decrease of inlet oxygen concentration will make the maximum combustion pressure and heat release rate decreased rapidly,the heat release rate delayed and the ignition delay period prolonged,the brake spe...
【基金】
广西科学研究与技术开发计划项目(桂科攻1598007-44,桂科攻1598007-45)
【更新日期】
2016-05-12
【分类号】
TK421.2
【正文快照】
0概述传统的柴油机燃烧方式存在氮氧化物(NOx)与碳烟排放此消彼长的现象。要突破柴油机有害排放物极限,必须寻找新的燃烧方式,而低温燃烧被认为是突破这一极限较有前途的新型燃烧方式[1-2]。废气再循环(exhaust gas recirculation,EGR)是实现柴油机低温燃烧的一种有效方法[3]