| 船用柴油机EGR技术仿真研究 |
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| 引用本文： | 胡必柱,王锋,张充睿,张东明,平涛.船用柴油机EGR技术仿真研究[J].柴油机,2013,35(2):13-17. |
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| 作者姓名： | 胡必柱 王锋 张充睿 张东明 平涛 |
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| 作者单位： | 1. 七一一研究所,上海,201108
2. 上海财经大学,上海,200433 |
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| 摘 要： | 采用某船用中速单缸柴油机进行了EGR对性能及排放影响的仿真研究,并进行了试验验证。研究结果表明,采用EGR技术后,NOx加权排放下降到1.94(g.(kW.h)-1),但加权燃油消耗率上升至9.93(g.(kW.h)-1);通过提前喷油和增加EGR率相结合进行优化,虽然NOx加权排放上升到2.09(g.(kW.h)-1),但加权燃油消耗率下降至4.36(g.(kW.h)-1),柴油机燃油经济性得到明显优化。试验验证显示:仿真和试验结果吻合较好,表明经标定的DI-jet燃烧模型精度满足要求,能较准确预测柴油机性能及排放。
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| 关 键 词： | 船用中速单缸柴油机 EGR率 喷油提前角 燃油消耗率 NOx |
The Simulation Research of EGR on Marine Diesel Engine |
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| Hu Bizhu,Wang Feng,Zhang Chongrui,Zhang Dongming and Ping Tao.The Simulation Research of EGR on Marine Diesel Engine[J].Diesel Engine,2013,35(2):13-17. |
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| Authors: | Hu Bizhu Wang Feng Zhang Chongrui Zhang Dongming and Ping Tao |
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| Affiliation: | Shanghai Marine Diesel Engine Research Institute, Shanghai 201108,Shanghai Marine Diesel Engine Research Institute, Shanghai 201108,Shanghai University of Finance and Economics, Shanghai 200433,Shanghai Marine Diesel Engine Research Institute, Shanghai 201108 and Shanghai Marine Diesel Engine Research Institute, Shanghai 201108 |
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| Abstract: | The simulation research of EGR's effects on performance and emission characteristics were investigated on a medium speed single-cylinder marine diesel engine,and to verify the simulation results,experiments were carried out.Simulation results showed that with the use of EGR,NOx weighted emission decreased to 1.94(g ·(kW · h)-1),but on the other hand,the weighted brake specific fuel consumption(BSFC)increased to 9.93(g ·(kW · h)-1).By advancing the injection timing combined with increasing EGR ratio,the weighted BSFC decreased to 4.36(g ·(kW · h)-1)though NOx weighted emission increased to 2.09(g ·(kW · h)-1),which means the fuel economy of diesel engine were optimized obviously.Compared to the experimental results,it shows that the DI-jet combustion model which has been calibrated gives enough calculation precision to predict the performance and emission of the diesel engine. |
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| Keywords: | medium speed single-cylinder marine diesel engine EGR ratio fuel supply advance angle specific fuel consumption NOx |
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