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Demonstrating a 2-Stroke and 4-Stroke
large scale ammonia marine engine

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Maritime transport is the main modality for Europe’s import and export activities, contributing largely to the EU’s prime position in global trade. Although the amount of CO2 per item of cargo transported by deep sea vessels has been constantly falling over the last decades, the projected growth of the global fleet in the years to come may outstrip the efficiency gains achieved by the industry. 

Internal combustion engines (ICE) running on ammonia can be an important enabler in reaching the 2050 goals.


Ammonia ICEs could constitute as much as 30-80% of the total energy use by shipping in 2050. However, in order to make a real-world impact, these solutions need to be developed now and enter the market in the next 7-10 years.


This is precisely what the Ammonia2-4 project is aiming at. 


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DISCLAIMER: Founded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or CINEA. Neither the European Union nor the granting authority can be held responsible for them.


Reduction of CO2 emitted by deep sea vessels

>80% less
GHG emissions

NOx emissions below IMO Tier III regulations

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Wärtsilä Italia S.p. A.
Bagnoli della Rosandra, 334

34018 - San Dorligo della Valle Trieste - Italia

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