六缸车用柴油发动机停缸方案的试验研究  

Investigation on Performance and Emission of Automatic Shut-off Nozzle Using a 6-cylinderOn-road Diesel Engine

作　　者：王迎新[1] 谢夏琳[1] WANG Ying-xin;XIE Xia-lin(Yuchai Mechinery Co.,Ltd.,Yulin 537005,China)

机构地区：[1]广西玉柴机器股份有限公司工程研究院,玉林537005

出　　处：《内燃机与配件》2020年第21期10-13,共4页Internal Combustion Engine & Parts

摘　　要：在一台车用六缸柴油发动机上分别进行了基于闭缸模式的多种停缸方案的研究,验证了各种停缸方案对发动机性能的影响。结果表明:停缸技术在柴油发动机部分负荷区域能够带来明显的燃油经济性的提升,这些区域使用停缸技术后排气温度显著升高,排气流量下降明显,对提高SCR系统的效率有非常积极的作用。This study have managed to find out nozzle shut-off strategies leading to the reduction of fuel consumption and emission.Four shut-off strategies have been conducted using a 6-cylinder on-road diesel engine.The results have shown that four shut-off strategies were contributed to significant decrease of fuel cost and exhaust flow rate in part-load conditions.What's more,lower flow rate of exhaust,which were generally considered as a contributing factor of exhaust temperature increase,presented higher rate of NOx conversion in SCR system.

关 键 词：车用柴油机 停缸 性能 

分 类 号：TK423[动力工程及工程热物理—动力机械及工程]