| 冲击响应信号反演柴油机气缸压力的研究 |
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| 引用本文： | 余永华,朱继军,李玉军,杨建国. 冲击响应信号反演柴油机气缸压力的研究[J]. 柴油机, 2007, 29(1): 5-8 |
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| 作者姓名： | 余永华 朱继军 李玉军 杨建国 |
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| 作者单位： | 武汉理工大学能源与动力工程学院,湖北武汉,430063 |
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| 摘 要： | 以4120SG型柴油机为研究对象,分析了缸盖系统的激励源和响应特性,根据柴油机的发火顺序和相位关系,确定了缸盖表面振动的响应信号;采用倒频谱法进行了气缸内压力的反演研究,试验结果表明:对缸盖表面信号进行适当的预处理后,可以较好地反演出柴油机缸内压力信号,使得利用表面振动信号监测柴油机运行状态成为可能。
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| 关 键 词： | 柴油机 气缸压力 反演 倒谱 |
| 文章编号： | 1001-4357(2007)01-0005-04 |
| 修稿时间： | 2006-10-05 |
Research on Reconstruct Diesel Engine''''s Cylinder Pressure with Vibration Response Signals |
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| Yu Yonghua,Zhu Jijun,Li Yujun,Yang Jianguo. Research on Reconstruct Diesel Engine''''s Cylinder Pressure with Vibration Response Signals[J]. Diesel Engine, 2007, 29(1): 5-8 |
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| Authors: | Yu Yonghua Zhu Jijun Li Yujun Yang Jianguo |
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| Affiliation: | School of Energy and Power Engineering, Wuhan University of Technology, HubeiWuhan430063 |
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| Abstract: | The characteristics of the exciting sources and the response signals about the cylinder head of a 4120SG type diesel engine are analyzed.The vibration response signals of the cylinder head surface are determined according to firing order and the relation in phase.A cepstrum method was used to reconstruct the cylinder pressure.Test results show that if the vibration signals of cylinder head surface is handled by some appropriate methods in advance, the diesel engine′s cylinder pressure signals can be reconstructured better,which makes it possible to monitor the running status of diesel engines with surface vibration signals. |
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| Keywords: | diesel engine cylinder pressure reconstruction cepstrum |
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