双对置二冲程柴油机高原环境燃烧过程的模拟研究  

Numerical Investigation on Combustion Process of OPOC Two-Stroke Diesel Engine in Plateau Environment

作　　者：张磊[1] 苏铁熊[1,2] 冯云鹏[3] 马富康[2] 张艳岗[2] 曹斯琦 ZHANG Lei;SU Tiexiong;FENG Yunpeng;MA Fukang;ZHANG Yangang;CAO Siqi(College of Mechatronic Engineering,North University of China,Taiyuan 030051,China;School of Energy and Power Engineering,North University of China,Taiyuan 030051,China;Beijing Special Vehicle Institute,Beijing 100072,China;China North Engine Research Institute(Tianjin),Tianjin 300400,China)

机构地区：[1]中北大学机电工程学院,山西太原030051 [2]中北大学能源动力学院,山西太原030051 [3]北京特种车辆研究所,北京100072 [4]中国北方发动机研究所(天津),天津300400

出　　处：《车用发动机》2019年第1期58-63,71,共7页Vehicle Engine

基　　金：国家自然科学基金项目(51605447);山西省研究生教育创新项目(2016BY129)

摘　　要：为研究高原环境对对置活塞对置气缸(OPOC)二冲程柴油机性能的影响,采用三维数值仿真的方法对不同海拔条件下OPOC二冲程柴油机燃烧过程进行研究。通过混合气特征参数定量分析高原环境对OPOC二冲程柴油机缸内油气混合过程的影响。通过对燃烧特征参数的分析,研究高原环境对OPOC二冲程柴油机燃烧过程的影响以及对OPOC二冲程柴油机性能的影响。结果表明:高原环境下,OPOC二冲程柴油机缸内平均压力下降,平均温度升高,燃烧过程恶化,燃油消耗率增加,Soot排放显著增加,而NO_x排放下降不明显。In order to study the influences of plateau environment on the performance of OPOC two-stroke diesel engine,the combustion processes of OPOC engine at different altitudes were investigated with 3D simulation method.The influences of plateau environment on the air-fuel mixing process inside the cylinder of OPOC two-stroke diesel engine were quantitatively analyzed according to the mixture characteristic parameters.Through the analysis of combustion characteristic parameters,the influences of plateau environment on the combustion process and performance of OPOC two-stroke diesel engine were studied.The results show that the mean in-cylinder pressure decreases,the mean in-cylinder temperature increases,the combustion process deteriorates,the fuel consumption and soot emission increase and the NO x emission shows an unobvious decrease in plateau environment.

关 键 词：对置活塞对置气缸(OPOC)柴油机 二冲程柴油机 高原环境 混合气形成 燃烧过程 数值模拟 

分 类 号：TK421[动力工程及工程热物理—动力机械及工程]