Technology for Ecology
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Technology for Ecology Medium speed engines for cleaner air

MAN Diesel & Turbo is the world’s leading provider of large-bore diesel engines and turbomachinery. Our portfolio includes two-stroke and four-stroke engines for marine and stationary applications, turbochargers and propellers, as well as gas and steam turbines, compressors, and chemical reactors. Our commitment to minimizing fuel consumption while meeting even the most advanced emissions regulations plays a vital role in safeguarding the environment for future generations. IMO NOX limit curves according to engine speed State-of-the-art technology The diesel engine has always been the most...

With us, years ahead of time MAN Diesel & Turbo has the relevant technologies for IMO Tier III, which even enable our clients to benefit from attractive incentives. Norway, for example, initiated a scheme which rewards every kg of NOX that is not emitted. With MAN Diesel & Turbo technology, ship owners and operators can adopt NOX reduction systems in their fleets at an early date and benefit from this incentive. MAN Diesel & Turbo: a foresighted decision. Implementation schedule Implementation schedule SOx & NOx limits according to IMO MARPOL 73/78 Annex VI Schematic world map of Emission...

Prepared for the Future MAN Diesel & Turbo emission technology portfolio Benefit from overall system competence Targeting all important emissions MAN Diesel & Turbo unites comprehen- caused by combustion engines. It can sive technol gies and competencies o be efficiently minimized by using selec- under one roof: injection systems, tur- tive catalytic reduction and exhaust gas bocharger, control and after-treatment systems. This enables us to design and implement highly efficient emission-re- duction packages for both new build- not be influenced during the combus- tion process. One option...

The Right Combination against NOX A bundle of available measures Effective NOX reduction off the shelf efficiently. There is no additional work of systems that condition the fuel and Temperature peaks during combustion required at the shipyard, and the engine combustion air to eliminate combustion are the prin iple cause of NOX formac itself does not require any additional temperature peaks or remove NOX from tion. Therefore it is our primary goal to the engine’s exhaust, i.e., after-treat- prevent excessively high temperatures ment devices. during the combustion process. Built-in features...

Optimizing Engines for a Blue Sky Primary NOX measures on the engine IMO Tier II compliance and beyond enables a variable Miller process. It en- The following primary measures form the sures the elimination of the particle mat- Turbo Sequential Turbocharging (STC) basis for compliance with the IMO Tier II ter (PM) penalty which arises under par- systems. These technologies allow the limits and can be used to attain NOX tial load. quantity of air entering the cylinder to abatement levels beyond this milestone. be more precisely matched to the quantity of fuel throughout the engine’s High...

More Solutions for Less NOX Secondary NOX reduction measures in detail Catalytic after-treatment telligent control system and the inte- In order to ensure reliable and efficient Selective Catalytic Reduction (SCR) is gration of engine and exhaust gas re- the most tested and approved system developed a new SCR control strategy. for achieving NOX reduction rates up to optimized package with the highest A turbocharger bypass is used to tem- 90%. Due to different chemical reacions t efficiency at the lowest operational ex- porarily increase the exhaust tempera- taking place in the exhaust gas...

Selective Catalytic Reduction in principle Exhaust temperature after turbine (e.g. HFO usage) [°C ] Operation time Technology for Ecology – Medium speed engines for cleaner air

Tailored to the Engine The MAN Diesel & Turbo SCR system Control signal The MAN Diesel & Turbo SCR system Main components of the SCR system: Urea solution standard is available in fourteen differ- ent sizes. In this way, it fully covers the entire portfolio of MAN medium speed diesel engines. Furthermore, custom- ized SCR systems can be offered on Do not scale from this drawing. reactor elements blowing system unit device injection lance Diesel engine MAN 6L32/44CR Power: 3,600 kW MAN SCR reactor with catalyst modules Compressed air reservoire module Control unit Mixing unit with urea...

Exhaust Gas Recirculation Efficient NOX reduction Plant set-up scheme Exhaust gas with a benefit Installed engines, new technology The exhaust gas recirculation concept MAN Diesel & Turbo has the expertise (EGR) uses exhaust gas to decrease to offer the optimum emissions reduc- the oxygen concentration in the charge tion solution for each specific engine air. This leads to slower combustion application. This also applies to en- and a lower peak temperature, there- gines that are already in the field. De- fore reducing NOX emissions. pending on engine application and technical and economic...

Solutions beyond the Combustion Process SOX reduction in the exhaust tract The MAN V32/44CR includes the full range of primary NOX reduction measures currently used on MAN Diesel & Turbo four-stroke engines with Common Rail fuel injection. The benefits of low-sulfur fuel Two main principles are currently used in be added to ensure proper desulfuriza- Using a low-sulfur fuel cuts the amount marine applications: scrubbers, based tion. The combination of both systems, of sulfur in the exhaust. It simultaneous- so-called hybrid scrubbers, maximizes ly reduces the formation of Particulate with...

Typical energy/ heat balance of a cruise ship Power generation, Heat recovery Heat recovery Steam Generators energy recovery Seawater cooling losses Freedom in the choice of technologies The Energy Efficiency Design Index (EEDI) sets a limit for the maximum CO2 emissions for ships of different types and sizes. This performance-based mechanism lets the industry decide which technologies to use in each specific ship design. As long as the required energy efficiency level is achieved, ship designers and builders can select the most cost-efficient solution. SaCoS for maximum efficiency Reduced...