海拔对增压中冷柴油机综合性能的影响

于跃,雷基林,邓晰文,唐成章,申立中

车用发动机 ›› 2019, Vol. 0 ›› Issue (6) : 38-42.

车用发动机 ›› 2019, Vol. 0 ›› Issue (6) : 38-42.
栏目

海拔对增压中冷柴油机综合性能的影响

  • 于跃,雷基林,邓晰文,唐成章,申立中
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Influences of Altitude on Comprehensive Performance  of Turbocharged Intercooled Diesel Engine

  • YU Yue,LEI Jilin,DENG Xiwen,TANG Chengzhang,SHEN Lizhong
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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1 900 m时比海拔100 m时下降了6.3%1 000 r/min2 200 r/min外特性工况点最大扭矩在海拔1 900 m时比海拔100 m时分别下降了23.6%3.8%。经济性方面:1 000 r/min2 200 r/min外特性工况点有效燃油消耗率在海拔1 900 m时比海拔100 m时分别升高了9.2%2.1%。排放方面:1 000 r/min的外特性工况点,海拔1 900 mCO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、HCCO排放有显著影响。

Abstract

In order to understand the influences of different altitudes on comprehensive performance of turbocharged intercooled diesel enginetaking 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 1 900 mreduces by 6.3% compared to that at the altitude of 100 m. In addition, the maximum torques and the specific fuel consumptions at 1 000 r/min and 2 200 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 1 000 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

Key words

turbocharged diesel engine / altitude / performance experiment

引用本文

导出引用
于跃,雷基林,邓晰文,唐成章,申立中. 海拔对增压中冷柴油机综合性能的影响[J]. 车用发动机. 2019, 0(6): 38-42
YU Yue,LEI Jilin,DENG Xiwen,TANG Chengzhang,SHEN Lizhong. Influences of Altitude on Comprehensive Performance  of Turbocharged Intercooled Diesel Engine[J]. Vehicle Engine. 2019, 0(6): 38-42

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