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基于分析爆震对柴油机表面振动的影响，给出了用时频分析检测柴油机爆震的方法，代替传统的模式识别方法．实验证明，在时频分布图上可以清楚地分辨所对应的不同的频率响应．
Based on the analysis of the effect of knocking on diesel engine surface vibration, a method of detecting diesel engine knocking by time-frequency analysis is given instead of the traditional pattern recognition method. Experiments show that in the time-frequency distribution can clearly distinguish the corresponding different frequency response.