IMO Tier III-compliant diesel engine
The MAN engine with integrated EGR
The EGR is integrated into a B&W 6S80ME-C9 engine. According to MAN Diesel & Turbo, the EGR system represents a milestone that enables the engine to meet the IMO Tier III NOx regulations, which will be introduced in ECAs (Emission Controlled Areas) from 2016.
Due to the new development the strict emissions limit can be met without significantly compromising engine performance, MAN said. Søren H. Jensen, vice president and head of Research & Development, Marine Low-Speed of MAN Diesel & Turbo said: “Testing achieved a low penalty, equivalent to 1-3 g/kWh, which is even better than our most optimistic expectations.”
The EGR system was designed, produced and assembled in close cooperation with HHI-EMD, Alfa Laval, Siemens, GEA and Vestas Aircoil. Søren Jensen further said: “As a promising spin-off benefit, the engine can also run in a fuel-optimised Tier II mode that facilitates an approximate 4 g/kWh fuel-oil consumption reduction at part-load.”
The engine will be installed in a Maersk Line C-class container vessel, currently under construction at Hyundai’s shipyard. MAN Diesel & Turbo intends to follow the engine’s performance closely over the next three years in order to gain service experience and increase the EGR system’s reliability for future engines.
