nir-vana innovation network

This client from Poland deals with manufacture and repair of combustion engine parts. Having considerable experience in service and repair of viscous and spring torsional vibration dampers used in ship engines, they have developed an innovative diagnostic technology using a special dynamic properties test station. The diagnostic method will allow checking functionality of vibration dampers by determining their amplitude and frequency characteristics before and after repair. The test station will be used for comprehensive quality control of crankshaft torsional vibration dampers in combustion engines. It has been designed in particular for large combustion engines used in marine vessels and heavy machinery.

The client is interested in cooperation with shipowners and ship repair yards based on a commercial agreement with technical assistance. Commercial part would include diagnostic service and repair, if required. Technical assistance shall be defined as providing the described innovative test station to determine the condition of crankshaft torsional vibration dampers in a more convenient and easy way.

Advantages & innovations

Considering high dynamic loads occurring in ship engines, crankshaft torsional vibration dampers should be checked every 12,000 hours of operation (as required by marine industry classification societies). The weight of vibration dampers used in marine applications can reach hundreds of kilograms, which makes them very difficult to handle. Normal check procedure requires damper removal from the engine and takes at least several workdays. Using an innovative test station allows to determine the technical condition of vibration dampers by measuring viscous damping coefficient. The test takes only 30 minutes and is completely sufficient to assess damper functionality. The damper needs to be removed only if damping parameters are below acceptable values. This method allows to reduce the cost of ship engine service and eliminates unnecessary downtime.

Stage of development

Already on the market

Partner sought

The client is seeking shipowners and ship repair yards dealing with major repairs and overhauls of vessels. The client would perform diagnostics and any necessary repairs of crankshaft torsional vibration dampers. Partner's role would consist in commissioning works to be performed as part of the ship overhaul procedure. Diagnostic service would be provided with technical assistance.