This detection method is based on the fact that any slight change in the bearing wall thickness at the load-bearing area of these three types of bearings will cause a change in the bottom dead center (BDC) position of one or more crossheads, depending on the engine's construction.
The diesel engine connecting rod bearing shell is a moving component subjected to the greatest mechanical loads and reciprocating inertial forces. It is also the most wear-prone part, constantly affected by abrasive wear, adhesive wear, fretting wear, fatigue wear, erosion wear, chemical wear, etc.
Under normal operating conditions, it cannot be inspected directly. When the bearing shell becomes abnormal due to wear, its oil temperature will inevitably rise. By monitoring the temperature of the splashed lubricating oil, we can diagnose whether a diesel engine fault has occurred.
To achieve the above two objectives, two different methods are available for analyzing BDC signals:
• One method detects sudden changes in the BDC position signal.By using a specialized oil-in-water sensor to detect water content in the lubricating oil, we can provide early warning and avoid unnecessary damage.
|
|