Locomotive Diesel Engine Fault State Inspection Based on the Cylinder Vibration Analysis

Considering the drawbacks of regular maintenance, online state inspection based on vibration analysis is adopted to diagnose the locomotive working state, which can dramatically improve the maintaining efficiency as well as decrease the phenomena of over maintenance or lack of maintenance. Cylinder vibration general curve is acquired. Fault diagnosis method is researched by analyzing the curve and the practical fault. The vibration phenomena and the corresponding possible reasons are linked. By analyzing the cylinder jacket and cylinder head vibration curve with the method of vibration comparison value, the working state of all the cylinders is tested. The strategy proposed in this paper is applied to the No.0015 locomotive of the Rizhao Seaport Transportation Company and the practical result shows its validity.