富氮进气对发动机NOx排放及性能的影响  

Effects of Nitrogen-enriched Intake Air on the NO_x Emission and Performance of Engine

作　　者：金英爱[1,2] 高淳[2] 马纯强[2] 隆愈强[2] 高青[1,2] Y．Y．Yan 

机构地区：[1]吉林大学,汽车动态模拟国家重点实验室,长春130025 [2]吉林大学汽车工程学院,长春130025 [3]University of Nottingham, Nottingham NG7 2RD, UK

出　　处：《汽车工程》2010年第9期769-773,共5页Automotive Engineering

基　　金：国家自然科学基金(50676039)资助

摘　　要：通过变进气组分,研究富氮进气对发动机NOx排放和性能的影响。结果表明,富氮进气组分对发动机动力性、燃油经济性和排放性能有显著影响:燃烧受到抑制,燃烧温度降低,NOx排放显著减少。但富氮进气将不同程度地导致发动机功率下降,比油耗升高,HC和CO排放增加。在低富氮程度下,NOx排放可显著降低,而其它的不利影响较小。另外,富氮界限较窄,超出界限将对燃烧产生明显的不利影响,因此富氮组分界限的合理确定和协同优化控制极其重要。The effects of nitrogen-enriched intake air on the NOx emission and performance of engine is studied with variable air composition.The results show that nitrogen-enriched intake air has significant effects on the performance,fuel economy and emission of engine： combustion is inhibited,combustion temperature is lowered and NOx emission is markedly reduced.However,nitrogen-enriched intake air also results in the drop of engine power,the rise in specific fuel consumption and the increase in HC and CO emissions.But under low level of nitrogen-enrichment,NOx emission can be significantly reduced with less adverse influences on other respects.In addition,the feasible range of nitrogen-enrichment is rather limited,beyond which there will be unfavorable effects on combustion.Therefore,the reasonable determination of nitrogen-enrichment range and collaborative optimization control are of the utmost importance.

关 键 词：发动机 变进气组分 富氮 排放 性能 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]