b'MEMBER NEWSMEMBER NEWS mtu Launches New Exhaust Aftertreatment System for Marine EnginesR olls-Roycehasintroducedload profile) and a 15 percent reduc- the North American coast. The mtu new,moreflexibleandtioninlife-cyclecosts.Rolls-RoyceSCRsystemreducesnitrogenoxide compactexhaustaftertreat- will gradually offer the new genera- emissions by 75 percent compared to mentsystemsincombinationwithtion of the mtu Flex SCR system forIMO II limits.the 16-cylinder mtu Series 4000 en- other mtu engines as well.gineformaritimevesselsincludingComparedtothepreviousmtusys-ferries.ThenewgenerationofmtuShipswithintegratedpropulsiontem, ship operators can save up to 42 SCR(selectivecatalyticreduction)systems (mtu engines and SCR sys- percent space with the new Flex SCR. systems requires up to 42 percent lesstems)inthepowerrangebetweenThe components can be installed hor-space and weighs almost 40 percent2,176and2,560kilowattscanbeizontally,vertically,upright,orsus-less.Furtheradvantagesincludeanoperatedinareaswithparticularlypended in the engine room, depending increased service life of the ceramicstrictemissioncontrols(IMOTieron requirements. Rolls-Royce has also SCRmaterial(substrate)to18,000III). IMO Tier III emission controlreduced the weight of the new exhaust operatinghours(dependingontheareas(ECAs)include,forexample,aftertreatmentsystembyalmost40 percent compared to the previous mtu Cube Box product.In terms of flexibility, shipyards and shipownersalsobenefitfromthe abilitytoswitchthedosingofthe reducing agent on and off. This may bethecasewhentheyaretraveling fromoneemission-regulatedareato another. It is the proven actively con-trolled system in which emissions are continuously measured upstream and downstream of the SCR system. This ensures optimal and compliant oper-ationoftheexhaustaftertreatment systemandminimaldosingofthe required reducing agent.FOGHORN 50'