Monitoring of bearing wear in a marine engine by change of piston position — Effect of wear and inertia

摘要

Wear monitoring of the journal bearings is one of the biggest issue in a marine engine because it can cause failure of the system without prior notice. BMW (Bearing Wear Monitoring), which is an indirect method to monitor the bearing wear using a change of the bottom dead center level of a piston, seems to be an effective way to monitor the bearing wear in real engine operation but it is important to separate the effect due to the wear from the other due to the inertia and the load.