AmmoniaH2

This project aims to promote the use of ammonia as a marine fuel by investigating the advantages of co-

combusting hydrogen in two-stroke marine engines. This approach seeks to reduce the reliance on fossil

pilot fuels, enabling more sustainable propulsion solutions. Hydrogen can be produced onboard through a

catalytic system that produces hydrogen from ammonia prior to combustion, eliminating the need for

direct hydrogen storage.

Another aspect the project will address is the uncertainty and viability of lubricating oils, surface materials,

and filter systems for engines powered by ammonia, particularly four-stroke engines. Key concerns include

the chemical degradation of lubricating oils, their ability to maintain proper lubrication under ammonia

combustion conditions, and the material requirements for safe integration into fuel systems.

The project will also focus on regulatory standards and a holistic analysis of ammonia and hydrogen as

maritime fuels, covering risk evaluation, regulatory guidance, and system integration with attention to

energy efficiency and environmental impacts. Furthermore, it will serve as a teaching case for Aarhus

Maskinmesterskole, enhancing the curriculum for future marine engineers. The insights gained will support

the transition to sustainable marine fuels and contribute to reducing greenhouse gas emissions in the

shipping industry.

The project adopts a holistic approach, addressing technical, environmental, and operational challenges.

Collaboration with technology developers, marine engineers, and industry experts will drive innovation.

The project is a collaboration between, DTI, AAMS, CC-Jensen, Wärtsila and ShippingLab