Condition monitoring of crank-train bearings in two-stroke diesel engines
The KONGSBERG Bearing Wear Monitoring System - BWCM, measures and displays the combined physical wear of crosshead-, crank- and main bearings, providing early bearing seizure warnings if problems occur
during engine operation. The sensors are specifically designed to provide reliable and accurate measurements over years of operation inside the engine.
The bearing wear monitoring system uses two sensors mounted in each cylinder compartment, measuring every time the crosshead passes bottom dead centre. These sensors perform individual compensation
for engine speed, engine crank case temperature and engine deflections due to vessel manoeuvring or cargo loading.
Avoiding all types of bearing damage
Bearing seizures are known to appear in many different forms and are caused by a wide variety of reasons. Combining the bearing wear monitoring system with KONGSBERG's wireless temperature monitoring
system (SENTRY) reduces the risk of bearing damages to an absolute minimum.
Avoiding open up inspection
The BWCM system is designed according to the specifications of MAN Diesel and Germanischer Lloyd (GL). The system is one of the required systems in order to avoid open up inspections.
The following systems are part of a class survey arrangement:
- BWCM system
- Water in Oil sensor
- Shaft Earthing Device (owner or yard supply)
- Computerised Planned Maintenance System (owner or yard supply)