摘要
为使天然气更加高效清洁燃烧,进一步降低发动机的污染排放,在三缸燃油发动机改装的天然气发动机上利用雾化喷嘴向预混室内喷射双氧水(H2O2),研究了喷射双氧水对发动机排气温度、动力性能、经济性能及HC、CO、NOx排放特性的影响。结果表明,添加H2O2可降低天然气发动机HC、CO、NOx排放,同时发动机的动力性能和经济性能都有所提高。H2O2可降低发动机燃烧温度但同时增加了氧气浓度,温度和氧气浓度是影响NOx生成量的主要因素。得到了气耗率及污染排放整体效果较好时的天然气与双氧水质量比为4.5～5.8。
In order to improve combustion efficiency of natural gas（NG） and reduce pollution emission in nature gas engine, additional injection of hydrogen peroxide （H202） into the premix chamber is proposed. With the test of COx HC and NOx concentration, exhaust temperature, NG consumption etc. , it is found that the emission of HC,CO and NOx decreased and the dynamic and economic performance of CNG engine is improved. H2O2 can make reduction of the combustion temperature while increase of the oxygen concentration. The pivot factors affecting NOx emission are temperature and oxygen concentration. The optimum mass proportion of nature gas and H2O2 is between 4.5 and 5.8 for NG consumption and pollution emission.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第2期104-109,共6页
Journal of Chongqing University
基金
重庆市科技攻关重大项目(CSTC
2008AC2051)
关键词
天然气发动机
预混室
双氧水
排放特性
试验
CNG engine
premix chamber
hydrogen peroxide
emission characteristic
experimentation
