农业工程学报2012，Vol.28Issue(12)：68-73,6.DOI:10.3969/j.issn.1002-6819.2012.12.012
空气湿度对柴油机NOx和碳烟排放影响的模拟分析
Simulation analysis of effects of air humidity on and soot emissions in diesel engine
摘要
Abstract
To understand the effects of air humidity on diesel engine emissions, the NOx and soot emissions were calculated during diesel combustion at different humidity ration (0, 5, 10 and 20 g/kg) using KIVA-3V software. The thermal physical parameters, intake composition and intermediate production were obtained. The simulation results show that NOx decrease linearly with increasing humidity ratio. At the humidity ratio of 20 g/kg, the NOx reduction of more than 30% can be achieved. Except at heavy load, humidity has a little effect on soot. Besides N2 and O2, O and OH radicals are reduced with increasing humidity ratio. At heavy load and high humidity, the decrease of O2 and soot oxidation resulting from decreasing O2 greatly contributes to soot yield. Humidity has dual effects on soot formation.关键词
柴油机/碳烟/NOx/含湿量/热物性参数Key words
diesel engines/ soot/ NOX/ humidity ratio/ thermal physical parameters分类
能源科技引用本文复制引用
王向丽,王忠,倪培永,毛功平,魏胜利..空气湿度对柴油机NOx和碳烟排放影响的模拟分析[J].农业工程学报,2012,28(12):68-73,6.基金项目
国家自然科学基金项目(51106065) （51106065）
江苏高校优势学科建设工程资助项目(苏政办发(2011)6号) （苏政办发(2011）
内燃机燃烧学国家重点实验室开放基金项目(K2012-09) （K2012-09）
江苏省普通高校研究生科研创新计划资助项目(CXZZ11_0563). （CXZZ11_0563）
