摘要
本文以TBD234V6型柴油机原机模型,为应对STC-VGT增压柴油机NOx排放问题,选用20°CA、21°CA、22°CA、23°CA、24°CA、25°CA、26°CA、27°CA喷油提前角对STC-VGT增压柴油机仿真优化研究,分析对STC-VGT增压柴油机缸内最高燃烧压力、燃油消耗率、NOx排放量、Soot排放量的影响,结果表明,以21°CA BTDC喷油提前角优化后的STC-VGT增压系统能够使得柴油机在低中负荷NOx排放性能达到传统定涡轮相继增压柴油机水平,高负荷NOx排放明显低于原机和传统定涡轮相继增压柴油机,同时保持柴油机动力性与经济性整体优于传统定涡轮相继增压增压柴油机。
Based on the original TBD234V6 diesel engine model,in order to deal with the NOx emission problem of STC-VGT supercharged diesel engine,the injection advance angles of 20°CA,21°CA,22°CA,23°CA,24°CA,25°CA,26°CA and 27°CA were selected to simulate and optimize the STC-VGT supercharged diesel engine.The influences on the maximum combustion pressure,fuel consumption rate,NOx emission and Soot emissions of STC-VGT supercharged diesel engine were analyzed.The results show that the STC-VGT supercharged system optimized with the 21°CA BTDC injection advance angle can achieve the NOx emission performance of the traditional constant turbine successive supercharged diesel engine at low and medium load.The NOx emission of high load diesel engine is obviously lower than that of the original engine and the traditional constant turbine successive supercharging diesel engine,while maintaining the overall power performance and economy of the diesel engine is better than that of the traditional constant turbine successive supercharging diesel engine.
作者
毛旭东
陈坚
MAO Xu-dong;CHEN Jian(School of Marine Engineering, Jimei University, Xiamen 361021, China)
出处
《应用能源技术》
2022年第2期14-23,共10页
Applied Energy Technology
