摘要
针对一款柴油机,考察不同进气负压及中冷压差对发动机动力性能及排放影响。试验结果表明:外特性试验时随着进气负压的加大,功率转矩最大降低0.4%,修正系数相应增加。随中冷压差的增加,功率转矩最大降低3.4%,油耗率上升;十三工况时随着进气负压及中冷压差的升高,CO、HC排放值降低,NO_x和烟度排放值升高。
Changing the inlet vacuum and differential pressure of intercooler of a diesel engine, research on the power performance and emission was conducted. The results show that engine power and torque decrease at most 0.4 percent with inlet vacuum increases when it is on the full load working conditions; and the correction factor increases at the same time. Engine power and torque decrease at most 3.4 percent with differential pressure of intercooler increases; and specific fuel consumption increases at the same time. CO and HC emission decrease with the increase of inlet vacuum and differential pressure of intercooler when it is on the 13 steady state working conditions, while NOx and smoke intensity at the same time increase.
作者
高鑫磊
张岳秋
李昂
Gao Xinlei;Zhang Yueqiu;Li Ang(- China Automotive Technology ＆ Research Center（Beijing,100176,China;- Beijing Municipal Power-driven Vehicle Emission Administration Center)
出处
《小型内燃机与车辆技术》
2018年第3期10-13,共4页
Small Internal Combustion Engine and Vehicle Technique
关键词
进气负压
中冷压差
外特性
十三工况
性能
排放
Inlet vacuum
Differential pressure of intercooler
Full load
13 steady state working conditions
Power performance
Emission
