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首页> 外文期刊>日本舶用機関学会誌 >Diagnostic system for 4-stroke cycle diesel engine by measurement of vibration on cylinder-jackets
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Diagnostic system for 4-stroke cycle diesel engine by measurement of vibration on cylinder-jackets

机译：通过测量缸套的振动诊断四冲程循环柴油发动机的系统

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摘要

The reliability of the main engine must be extremely high in order to ensure the safe navigation of ships. This paper describes the construction of monitoring system capable of grasping the condition of the engine by using vibration signal of a diesel engine. The vibration was measured by sensors on cylinder jacket walls. The data of vibration were recorded on both normal and abnormal engine conditions. The following two kinds of conditions were used as an abnormal engine condition: running with fuel oil cut and the use of stopped-up fuel injection nozzle. Author executed visual judgment by means of the spectrum of the vibration in three-dimensional mannar and analyzed statistically as one method to estimate the condition of engine by the information from the vibration. It was found that one abnormal cylinder affected on vibration of other normal cylinders. Author succeeded to recognize abnormal engine condition correctly by mean of their information.
机译：为了确保船舶的安全航行，主机的可靠性必须非常高。本文描述了一种能够利用柴油机的振动信号来掌握发动机状态的监控系统的结构。通过气缸套壁上的传感器测量振动。在正常和异常发动机状况下都记录了振动数据。以下两种情况被用作发动机异常情况：燃油被切断运行和使用了燃油喷射喷嘴已停止的情况。作者利用三维声场中的振动频谱进行了视觉判断，并进行了统计分析，以此作为根据振动信息估算发动机状态的一种方法。发现一个异常气缸会影响其他正常气缸的振动。作者通过他们的信息成功地正确识别了发动机异常状况。

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