Characteristics and diagnosis of common fault signals of tank engines

Engine;  vibration signal;  failure mechanism;  diagnostic techniques;  Wavelet analysis

Tank engine failure is currently backward in maintenance mode, and fault diagnosis is difficult. Through a large number of experimental studies, the vibration mechanism and signal characteristics of common faults of tank engines on the surface of the cylinder block and cylinder head system were obtained, and the signal characteristics of common faults such as valve leakage, engine cylinder pulling and running imbalance were studied, and signal analysis methods such as correlation, frequency domain, and wavelet were selected, and examples of premature fuel injection, abnormal fuel injection, after-combustion type, engine block, and high-pressure oil pipe vibration signal frequency domain analysis proved the applicability and effectiveness of signal characteristics and their analysis methods.