Integrated solutions to reduce noise and vibration in the powertrain of ships

Today's drivetrains are characterized by high power transmission and low weight. And the integration of hybrid components makes the powertrain concepts significantly more complex. In addition, the acoustic requirements of the entire system are becoming increasingly important. Due to new legal regulations, this is no more exclusively linked to military ships or luxury yachts. The main transmission path of structure-borne noise is from the engine to the engine mounts and thus to the hull. This path is currently well known and high-quality engine mounts avoid most NVH problems. Today, it is the secondary path of structure-borne noise from the engine via the gearbox and the shaft line into the ship's hull that needs to be optimized. In the best case, acoustic optimization is directly integrated into the drivetrain and includes additional functions like torque transmission and misalignment abilities.

An example is the SILENCO® misalignment coupling:  Geislinger Silenco® | Coupling with Enhanced Acoustic Performance

Noise and vibrations should be reduced as close as possible to the source in order to avoid resonance effects and transmission via a third path. The challenge is to create the most compact, integrated solution possible, which ideally can be retrofitted and requires no additional space. To achieve this goal, different concepts of couplings and dampers are required, as was shown in the presentation.

Geislinger’s couplings and dampers are individually adapted to customer needs and take a wide range of requirements into account. For your individual requirements, feel free to contact us directly.