MAN Diesel & Turbo regularly introduces design innovations in the field of emissions reduction, while the IMO’s Tier-II and Tier-III emission regulations also exert a great influence on modern engine technology. Emissions of older two- and four-stroke engine generations can be reduced and to some extend made compliant to new rules through a variety of retrofit techniques like the installation of slide fuel-valves and low NOx-packages. The retrofit concept also covers more comprehensive installations such as the NOx-reducing WIF (Water In Fuel)/FWE (Fuel Water Emulsification), HAM or SCR systems.

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