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本文从理论上探讨了用机械振动分析法对康明斯发动机的燃烧状况进行监测时，应出现的振动信号的时域、频域波形的情况，并以此为指导在实验中确定了振动的最佳测点位置。
In this paper, we discuss the time-domain and frequency-domain waveforms of vibration signals that should occur when monitoring combustion conditions of Cummins engines by using mechanical vibration analysis. In the meantime, we have determined the optimum vibration Measuring point location.