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Experimental study of Reducing Combustios Noise on High Speed DI Diesel Engine in Ship

机译：降低船舶高速DI柴油机燃烧噪声的实验研究

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摘要

There are usually two methods for the vibration and noise control of high speed DI (direct-injection) diesel engine in ship (Pe<200kW, n>1000r/min): one is to control vibration, the other is to isolate vibration and noise against the inciting source. The first one is better than the second, as it is basic method to reduce inciting force and control noise source. It is key and difficult to reduce combustion noise for control of noise source. For the experimental diesel engine, high pressure common rail electronically-controlled fuel injection system and fuel pilot injection technology were applied, the effects of common rail pressure, fuel pilot injection timing, fuel pilot injection quantity, fuel pilot injection interval angle were analyzed on diesel engine performance, and main affecting factors on combustion noise were analyzed specially. The relationships between combustion noise and fuel injection rate, combustion process, and heat release rate were discussed. Modem signal gathering, processing and analyzing technology were used by MATLAB toolbox writing program. With SYSNOISE software numerical simulation, the computed results and the test data were analyzed, combustion noise were distinguished and separated from the total noise. The results show that high fuel injection pressure, small diameter of fuel injection hole and exact fuel pilot injection parameters match to inlet- air system and combustion chamber. Based on better combustion process, the fuel injection rate and heat release rate were optimized, hence, performance of power, economy, exhaust and noise were improved. A new method to design low noise diesel engine is provided, so that operating cost is reduced. It is adaptable to circumstance requests for NVH (noise and vibration harshness) in modern high speed DI diesel engine in ship.
机译：船用高速DI（直接喷射）柴油发动机（Pe <200kW，n> 1000r / min）的振动和噪声控制通常有两种方法：一种是控制振动，另一种是隔离振动和噪声反对煽动性的来源。第一个优于第二个，因为它是减少激励力和控制噪声源的基本方法。降低燃烧噪声是控制噪声源的关键和困难。对于实验柴油机，应用高压共轨电控燃油喷射系统和燃油先导喷射技术，分析了共轨压力，燃油先导喷射正时，燃油先导喷射量，燃油先导喷射间隔角对柴油机的影响。重点分析了发动机性能以及影响燃烧噪声的主要因素。讨论了燃烧噪声与燃料喷射率，燃烧过程和放热率之间的关系。 MATLAB工具箱编写程序使用了调制解调器信号的采集，处理和分析技术。利用SYSNOISE软件进行数值模拟，分析了计算结果和测试数据，将燃烧噪声与总噪声区分开来。结果表明，较高的燃油喷射压力，较小的燃油喷射孔直径和精确的燃油先导喷射参数与进气系统和燃烧室相匹配。在更好的燃烧过程的基础上，优化了燃油喷射率和放热率，从而提高了动力，经济性，排气和噪音。提供了一种设计低噪声柴油机的新方法，从而降低了运行成本。它适用于船上现代高速DI柴油发动机对NVH（噪声和振动刺耳性）的要求。

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  • 来源
  • 会议地点 Harbin(CN)
  • 作者

    Yu Jin; rnYingyi Liu; rnDayong Yang; rnXingyu Jiang;

  • 作者单位

    Ping Wang@School of Energy and Power Engineering, Dalian University of Technology, Dalian City, Liaoning Province, China--Xigeng Song@School of Energy and Power Engineering, Dalian University of Technology, Dalian City, Liaoning Province, China--Dongxin Xue@School of Energy and Power Engineering, Dalian University of Technology, Dalian City, Liaoning Province, China--Yulin Ge@School of Energy and Power Engineering, Dalian University of Technology, Dalian City, Liaoning Province, China Design Institute of Jinzhou Petrochemical Company, Jinzhou City, Liaoning Province, China--Haitao Zhou@School of Energy and Power Engineering, Dalian University of Technology, Dalian City, Liaoning Province, China--Yougen Sun@School of Energy and Power Engineering, Dalian University of Technology, Dalian City;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 船舶工程;
  • 关键词

    diesel engine; combustion noise; high pressure common rail; fuel pilot injection;

    机译：柴油机;燃烧噪声;高压共轨;燃油引燃;

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