Abnormality Detection of a Contaminated Transmission by Vibration Monitoring

Abstract

Diesel cars having a diesel engine as a power source are widely used as railway vehicles that travel in non-electrified sections. When a driving device such as an engine fails, the vehicle cannot run, so it is desirable to detect an abnormality early to prevent the failure. Therefore, we are conducting research and development of a state monitoring method by vibration, targeting drive equipment such as engines. This time, an abnormal simulation test was carried out using a bench test, in which SiC was mixed into the transmission oil to promote wear inside the transmission. It was confirmed that the abnormal condition of the transmission can be detected by applying the condition monitoring method to the measured vibration data by reproducing the abnormal wear occurring in the bearing of the transmission, and the condition monitoring method is effective.