Ammonia-Hydrogen Engine: Deutsche Bahn, Fortescue Initiative

A look into the ammonia-hydrogen engine and its potential benefits; currently being tested by DB and FFI for locomotives and railways.

Let us know about Ammonia-Hydrogen Engines 

• The ammonia-hydrogen engine is based on an existing diesel engine that will be modified to run on green ammonia and hydrogen produced from renewable energies.
• It is easier to transport and store since ammonia has a higher energy density than liquid hydrogen
• Cracker, a key part of the ammonia-hydrogen engine splits a small part of the ammonia outside the engine into hydrogen and nitrogen.
•  The ammonia-hydrogen engine is trialled by DB and FFI.

Here are the benefits of using ammonia-hydrogen engines:

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1. Reduced Emissions:
   • Ammonia is a cleaner fuel compared to fossil fuels. When used in engines, it produces fewer greenhouse gas emissions and pollutants.
   • The combustion of ammonia results in nitrogen and water vapor, minimizing harmful exhaust emissions.
2. Energy Density:
   • Ammonia has a higher energy density by volume than liquid hydrogen. This makes it easier to transport and store.
   • It allows for longer driving ranges without frequent refueling.
3. Renewable Production:
   • Ammonia can be produced from renewable energy sources (such as wind, solar, or hydropower) through the Haber-Bosch process.
   • This aligns with sustainability goals and reduces dependence on fossil fuels.
4. Existing Infrastructure:
   • Ammonia can leverage existing infrastructure (e.g., pipelines, storage tanks) used for industrial purposes.
   • Retrofitting existing engines for ammonia use is more feasible than building entirely new hydrogen infrastructure.
5. Energy Carrier:
   • Ammonia can serve as an energy carrier, allowing efficient transport of hydrogen.
   • It can be converted back to hydrogen for use in fuel cells or other applications.

In summary, ammonia-hydrogen engines contribute to cleaner transportation, reduced emissions, and improved energy efficiency. 

For more info, click here to go to the related article posted in International Railway Journal

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