• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy Conversion & Management >A general purpose diagnostic technique for marine diesel engines - Application on the main propulsion and auxiliary diesel units of a marine vessel
【24h】

A general purpose diagnostic technique for marine diesel engines - Application on the main propulsion and auxiliary diesel units of a marine vessel

机译：船用柴油机通用诊断技术-在船用主推进和辅助柴油机上的应用。

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Diesel engines are widely used in marine applications (i.e. propulsion and auxiliaries) except from a few cases where gas or steam turbines are used. This is the result of their high efficiency, power concentration and reliability compared to other compatible or alternative power sources. The proper and efficient operation of the engines (main engine and diesel generator units) in marine applications is critical, and therefore techniques or systems that determine engine current condition and detect potential faults are extremely important. Furthermore, it is advantageous when such techniques can be applied on different engine configurations and provide reliable results, because on a vessel usually exist diesel engines of different type, i.e. the main propulsion unit is a large low-speed two-stroke diesel engine while the diesel generators are four-stroke medium or high speed engines. In the present work is described and evaluated for the first time the application of an improved diagnostic technique, developed by the authors, on both the main engine and the auxiliary units of a commercial marine vessel. The diagnostic technique is based on a thermodynamic simulation model. The simulation model embedded in the technique has been modified, namely an existing two-zone model is replaced by a multi-zone one. With this modification it is avoided model constant tuning with the operating conditions. This is extremely important for the diagnostic philosophy of the proposed technique. Using data from engine shop tests, the simulation model is calibrated (i.e. model constants are determined) and the engine reference condition is obtained. The simulation model is then used to estimate the current engine condition, using field measurements (i.e. cylinder pressure measurements, periphery data, etc.). From the results it is revealed that the diagnosis method provides detailed information for the operating condition of both engines and the values of parameters that cannot be measured on the field. To further evaluate the diagnostic procedure, results of the diagnosis analysis are compared with respective readings from existing instrumentation (i.e. brake power output, etc.), showing good agreement. From the investigation it is shown that the diagnostic technique can be applied on both engine types without modifications providing a useful integrated solution for the entire vessel power plant. This is extremely important because conventional systems are usually suitable only for the main engine even though auxiliary units are of significant importance.
机译：除了在少数情况下使用燃气轮机或蒸汽轮机的情况以外，柴油机广泛用于船舶应用（即推进和辅助设备）。与其他兼容或替代电源相比，这是它们具有高效率，功率集中和可靠性的结果。在船舶应用中，发动机（主机和柴油发电机组）的正确有效运行至关重要，因此，确定发动机当前状态并检测潜在故障的技术或系统极为重要。此外，有利的是，这样的技术可以应用于不同的发动机配置并提供可靠的结果，因为在船上通常存在不同类型的柴油发动机，即主推进单元是大型的低速二冲程柴油发动机，而柴油发电机是四冲程中速或高速发动机。在本工作中，首次描述和评估了作者开发的改进的诊断技术在商用船舶的主机和辅助单元上的应用。诊断技术基于热力学仿真模型。对该技术中嵌入的仿真模型进行了修改，即将现有的两区域模型替换为多区域模型。通过这种修改，避免了根据运行条件对模型进行恒定调整。这对于所提出技术的诊断原理极为重要。使用来自发动机车间测试的数据，校准仿真模型（即确定模型常数），并获得发动机参考条件。然后，使用现场测量（即气缸压力测量，外围数据等），将仿真模型用于估算当前发动机状态。从结果可以看出，该诊断方法提供了有关两种发动机的运行状况以及无法在现场测量的参数值的详细信息。为了进一步评估诊断程序，将诊断分析的结果与现有仪器的相应读数（即制动功率输出等）进行比较，显示出良好的一致性。从调查中可以看出，诊断技术可以不加修改地应用于两种发动机类型，从而为整个船舶动力装置提供有用的集成解决方案。这是非常重要的，因为即使辅助单元非常重要，常规系统通常也仅适用于主机。

著录项

  • 来源
    《Energy Conversion & Management》 |2010年第4期|P.740-753|共14页
  • 作者

    V.T. Lamaris; D.T. Hountalas;

  • 作者单位

    Internal Combustion Engines Laboratory, Thermal Engineering Department, School of Mechanical Engineering, National Technical University of Athens, 9 Heroon Polytechniou St., Zografou Campus, 15780 Athens, Greece;

    Internal Combustion Engines Laboratory, Thermal Engineering Department, School of Mechanical Engineering, National Technical University of Athens, 9 Heroon Polytechniou St., Zografou Campus, 15780 Athens, Greece;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    diagnosis; condition monitoring; marine; diesel engines;

    机译：诊断;状态监测;海洋柴油机;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号