Knock Detection in Spark Ignition Engines Base on Complementary Ensemble Empirical Mode Decomposition-Hilbert Transform

<div>(a) The filter result of cylinder block vibration signal. (b) The DWT result of cylinder block vibration signal. (c) The IMF1 of CEEMD result of cylinder block vibration signal.</div>

Shock and Vibration

fig11

Figure 11

Figure 11: Knock Detection in Spark Ignition Engines Base on Complementary Ensemble Empirical Mode Decomposition-Hilbert Transform 