| 船舶电控柴油机燃油共轨系统的建模与仿真 |
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| 引用本文： | 沈苏海,吴培莉,赵辉.船舶电控柴油机燃油共轨系统的建模与仿真[J].上海海事大学学报,2013,34(1):36-40. |
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| 作者姓名： | 沈苏海 吴培莉 赵辉 |
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| 作者单位： | 南通航运职业技术学院 轮机工程系,大连海事大学 轮机工程学院,中船重工第703研究所无锡分部 |
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| 基金项目： | 中央财政支持项目(32073990867) |
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| 摘 要： | 为分析船舶电控柴油机燃油共轨系统的动态性能以及各参数对系统性能的影响,以7RT-flex 60C柴油机为研究对象,研究燃油共轨系统的工作原理和结构特点.建立系统主要部件的数学模型,采用SIMULINK编写燃油共轨系统仿真程序,对系统升程、压力和流量特性进行模拟.结果表明,模型具有较高的准确性.在此基础上,研究相关参数对系统性能的影响.高压油泵的转速越高,供油率的变化越快;相同喷油脉宽下,共轨压力增加,喷油率增加;中间储油器、共轨管的容积对共轨压力波动有较大影响.建议在满足柴油机起动性能的基础上,选用较大的缓冲器容积或分段式共轨管.
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| 关 键 词： | 电控 船用柴油机 共轨 仿真 |
| 收稿时间： | 2012/8/13 0:00:00 |
| 修稿时间： | 2012/11/17 0:00:00 |
Modeling and simulation of common rail fuel system of electronically controlled marine diesel engine |
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| shen su hai,wu pei li and zhao hui.Modeling and simulation of common rail fuel system of electronically controlled marine diesel engine[J].Journal of Shanghai Maritime University,2013,34(1):36-40. |
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| Authors: | shen su hai wu pei li and zhao hui |
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| Institution: | 1.Marine Engineering Department,Nantong Shipping College,Nantong 226010,Jiangsu,China; 2.Marine Engineering College,Dalian Maritime Univ.,Dalian 116026,Liaoning,China; 3.Wuxi Branch,No.703 Research Institute of China Shipbuilding Heavy Industry,Wuxi 214151,Jiangsu,China) |
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| Abstract: | In order to analyze the dynamic performance of common rail fuel system of an electronically controlled marine diesel engine as well as the influence of parameters on system performance, a 7RT flex 60C diesel engine is selected as the research subject to study the working principle and structural features of the common rail fuel system. A mathematical model of the major components of the system is established, and a simulation program is developed by SIMULINK to simulate the characteristics of lift, pressure and flow characteristics of the system. The results show that the model achieves higher accuracy. On the above results, the influence of correlated parameters on the performance of the system is studied. Higher rotational speed of the high pressure oil pump leads to faster change of fuel supply rate. In the presence of the same fuel injection pulse width, the increase of common rail pressure leads to faster fuel injection rate. The volume of intermediate oil storage device and common rail has greater effect on fluctuation of common rail pressure. It is suggested that a greater buffer volume or a segmented common rail tube be used in the premise of satisfying the start up performance of diesel engine. |
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| Keywords: | electronic control marine diesel engine common rail simulation |
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