| 可变压缩比对增压中冷柴油机性能影响的模拟分析 |
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| 引用本文： | 朱益梁,何勇灵,Richard Stobart. 可变压缩比对增压中冷柴油机性能影响的模拟分析[J]. 农业工程学报, 2012, 28(4): 27-32 |
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| 作者姓名： | 朱益梁 何勇灵 Richard Stobart |
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| 作者单位： | 1. 北京航空航天大学交通科学与工程学院,北京,100191
2. 拉夫堡大学航空与汽车工程系,莱斯特LE113TU |
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| 摘 要： | 为计算可变压缩比技术对柴油机燃油经济性和排放性能的影响,该文通过GT-Power软件,对一台装备有中冷废气再循环系统和可变几何涡轮增压系统的C6.6重型柴油机进行了建模和仿真分析,并采用了直喷燃烧预测模型对模型的有效性进行了验证。研究结果表明,可变压缩比技术使柴油机中、低负荷下燃油经济性的改善可达7.2%,再结合适当的废气再循环(exhaust gas recirculation,EGR)率和可变几何涡轮增压系统(variable geometry turbocharger,VGT)控制策略,柴油机的NOx和颗粒物的排放性能可达到欧洲5号标准瞬态测试循环(european transient cycle,ETC)中的排放要求。因此,可变压缩比技术可以有效改善直喷柴油机的燃油经济性,提高排放性能。
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| 关 键 词： | 柴油机 燃油经济性 压缩比 GT-Power 排放 |
| 收稿时间： | 2011-05-11 |
| 修稿时间： | 2011-11-04 |
Simulation analysis on effect of variable compression ratio on turbocharged and inter-cooled diesel engine performance |
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| Zhu Yiliang,He Yongling and Richard Stobart. Simulation analysis on effect of variable compression ratio on turbocharged and inter-cooled diesel engine performance[J]. Transactions of the Chinese Society of Agricultural Engineering, 2012, 28(4): 27-32 |
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| Authors: | Zhu Yiliang He Yongling Richard Stobart |
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| Affiliation: | Zhu Yiliang1, He Yongling1, Richard Stobart2(1. School of Transportation Science and Engineering, Beihang University, Beijing 100191, China;2. Department of Aeronautical and Automotive Engineering, Loughborough University, Leicestershire LE11 3TU, UK) |
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| Abstract: | In order to investigate the effect of variable compression ratio (VCR) on fuel economy and emission reduction, a model of the heavy duty diesel engine C6.6 equipped with inter-cooling exhaust gas recirculation (EGR) and a variable geometry turbocharger (VGT) was presented and analyzed based on the GT-Power software and its validity was verified with a predictive direct-injection jet combustion model. The simulation results showed that the use of variable compression ratio improved fuel economy to 7.2% at low and medium load, also NOx and soot emissions could meet the need of Euro V values for ETC with corresponding EGR fraction and VGT strategy. Variable compression ratio can improve the fuel economy and emission performance of direct injection diesel engine effectively. |
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| Keywords: | diesel engine fuel economy compression ratio GT-Power emission |
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