摘要
采用内燃机大气模拟综合测控系统深入研究了增压中冷柴油机运行在不同海拔地区的动力性、经济性和排放特性与海拔高度的关系。试验结果表明:随着海拔高度的升高,大气压力减小,导致吸入气缸内的空气量减少,缸内吸气终了的温度和压力下降,从而使得增压中冷柴油机的动力性、经济性下降,等有效燃油消耗区明显变窄,CO、NOx、HC、PM排放浓度升高,而且在不同转速不同工况下CO、NOx、HC、PM排放浓度随海拔高度的变化趋势存在差异。
A microcomputer controlled atmosphere-simulating system for internal-combustion engine was set up and used to study engine power output, fuel economy, exhaust emissions versus the sea altitude in a turhocharged inter-coollng diesel engine. The result shows that, with the increase of altitude, the atmospheric pressure will decrease, resulting in the reduction of cylinder pressure and amount of air introduced. These will reduce engine power output and increase fuel consumption, and iso-fuel consumption range becomes narrow. The concentrations of the exhaust CO, NOx, HC and PM will increase, and these concentrations versus altitudes show difference at different engine speeds and loads.
出处
《内燃机学报》
EI
CAS
CSCD
北大核心
2006年第3期250-255,共6页
Transactions of Csice
基金
国家自然科学基金资助项目(50166002)
教育部骨干教师资助项目(GG-470-10674-1003)
关键词
排放
性能
高原地区
增压中冷柴油机
Emissions
Performance
High altitude regions
Turbocharged inter-cooling diesel engine
