海拔对增压中冷柴油机综合性能的影响  

Influences of Altitude on Comprehensive Performance of Turbocharged Intercooled Diesel Engine

作　　者：于跃 雷基林[1] 邓晰文[1] 唐成章 申立中[1] YU Yue;LEI Jilin;DENG Xiwen;TANG Chengzhang;SHEN Lizhong(Yunnan Province Key Laboratory of Internal Combustion Engines,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学云南省内燃机重点实验室

出　　处：《车用发动机》2019年第6期38-42,77,共6页Vehicle Engine

基　　金：云南省创新团队培育项目(2018HC021)

摘　　要：为了深入了解海拔对增压中冷柴油机综合性能的影响,以一款电控增压中冷柴油机为试验对象,采用大气模拟综合测控系统模拟不同海拔下的大气压力,对柴油机的动力性、经济性以及排放特性进行了试验研究。试验结果表明:在低转速时海拔对动力性、经济性、排放特性的影响程度比在高转速时的大;增压柴油机获得理想动力输出、保持经济运行的转速范围随着海拔的升高逐渐缩小,并且向高转速区域偏移。动力性方面:标定功率在海拔1900 m时比海拔100 m时下降了6.3%;1000 r/min和2200 r/min外特性工况点最大扭矩在海拔1900 m时比海拔100 m时分别下降了23.6%和3.8%。经济性方面:1000 r/min和2200 r/min外特性工况点有效燃油消耗率在海拔1900 m时比海拔100 m时分别升高了9.2%和2.1%。排放方面:1000 r/min的外特性工况点,海拔1900 m时CO生成量和烟度分别是海拔100 m时的4.55倍和4.06倍。在低速时,随着负荷的变化,海拔对NOx,炭烟、HC和CO排放有显著影响。In order to understand the influences of different altitudes on comprehensive performance of turbocharged intercooled diesel engine,taking the electronically controlled turbocharged intercooled diesel engine as the experimental object,the power,fuel economy and emission characteristics were investigated experimentally at different altitudes by using an atmospheric simulator.The experimental results show that the influences of altitude on power,fuel economy and emission characteristics at low speed are greater than those at high speed.The speed range in which turbocharged diesel engine has high power output and good fuel economy becomes smaller with the increase of altitude and shifts to the high speed range.The rated power at the altitude of 1900 mreduces by 6.3%compared to that at the altitude of 100 m.In addition,the maximum torques and the specific fuel consumptions at 1000 r/min and 2200 r/min decrease by 23.6%and 3.8%and increase by 9.2%and 2.1%respectively and the CO and soot emission also increase by 3.55 times and 3.06 times respectively at 1000 r/min.Altitude has great influence on NOx,soot,HC and CO emissions with the increase of load at low speed.

关 键 词：增压柴油机 海拔 性能试验 

分 类 号：TK421.8[动力工程及工程热物理—动力机械及工程]