MAN HyProp ECO

The paper describes the MAN HyProp ECO concept and application examples with various operating modes. For vessels with flexible operation profiles and running hours with both high and low power demands, advantages are fuel savings and emission reductions due to reduced propeller and engine speeds.

With MAN HyProp ECO it is possible to reduce the fuel consumption by 10-15 %, reduce CO2, NOx and SOx emissions, operate the propeller with the highest efficiency at its best hydrodynamic point, reduce the operating hours of auxiliary gensets, and avoid electrical losses in operation modes where a bypass of the variable speed drive (VSD) can be used.

For many merchant vessels such as tankers or cargo vessels with a peer-to-peer operation profile, where the vessels have long periods of con-stant sailing, this can be achieved by a diesel-mechanic propulsion system designed to match the power demand of the vessel at service speed.