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首页> 外文会议>International Congress on Sound and Vibration >DIESEL AND GAS ENGINES DIAGNOSIS BASED ON INSTANTANEOUS ANGULAR SPEED ANALYSIS
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DIESEL AND GAS ENGINES DIAGNOSIS BASED ON INSTANTANEOUS ANGULAR SPEED ANALYSIS

机译：基于瞬时角度速度分析的柴油和燃气发动机诊断

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摘要

Continuous monitoring of pistons engines (diesel or gas) performance is critical for early detection of fault developments in an engine before it goes into a functional failure. Instantaneous angular speed (IAS) analysis is one of a few non-intrusive condition monitoring techniques that could be applied for such tasks. This method needs only a non-intrusive speed sensor (magnetic or optical) signal to assess in details the mechanical behaviour of an engine and diagnose injection, compression, or valve state defaults, and bearings/moving parts damages. The method is able to point out the exact cylinder which is in defect using additional order tracking speed sensor (TDC or cam). The technique is more suitable and efficient for mass industry deployments than other non-intrusive methods such as vibration and acoustic emissions. A combination of instantaneous angular speed analysis based on Hilbert transform associated with order analysis and statistical moments is used and give detailed and robust diagnosis. The system is used on a cogeneration plant to monitor GE/JENBACHER gas engines, emergency diesel engines, fleet locomotives, and military/ferry boats. It is also currently tested on emergency diesel engines in EDF nuclear power plants.
机译：连续监测活塞发动机（柴油或气体）性能对于早期检测发动机中的故障开发至关重要，然后在其功能失败之前。瞬时角速度（IAS）分析是可以应用于此类任务的少数非侵入性状态监测技术之一。该方法仅需要非侵入式速度传感器（磁或光学）信号来评估发动机的机械特性和诊断喷射，压缩或阀状态默认的机械特性，以及轴承/移动部件损坏。该方法能够指出使用附加订购跟踪速度传感器（TDC或凸轮）缺陷的精确圆柱体。该技术比其他非侵入式方法（如振动和声发射）更适合和高效。使用基于与订单分析和统计时刻相关的希尔伯特变换的瞬时角度分析的组合，并提供详细且稳健的诊断。该系统用于热电联产工厂，以监控GE / JENBACHER燃气发动机，紧急柴油发动机，舰队机车和军用/渡船。它目前还在EDF核电站的紧急柴油发动机上进行了测试。

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