Preliminary research on the co-combustion process of ammonia in a compression-ignition engine
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Automotive Engineering Department, Wroclaw University of Science and Technology, Poland
Faculty of Mechanical Engineering, Poland
Submission date: 2025-06-20
Final revision date: 2025-09-09
Acceptance date: 2025-09-29
Online publication date: 2025-11-22
Corresponding author
Adriana Włóka
Automotive Engineering Department, Wroclaw University of Science and Technology, Poland
Faculty of Mechanical Engineering, Poland
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ABSTRACT
In the face of increasing requirements for exhaust emission reduction and the search for alternative fuels, ammonia is being considered as a potential fuel component in compression-ignition engines. The aim of this study was to conduct preliminary research on the co-combustion process of ammonia with diesel fuel and to assess its impact on exhaust emissions and engine performance characteristics. In the first stage, measurements of ammonia concentration in the exhaust gases were carried out to determine its presence in the exhaust stream. Next, optimal engine operating points were determined for various fuel ratios, enabling a comparative analysis of the combustion of pure diesel fuel and its mixtures with ammonia. In the final phase, key exhaust emission components were measured. The results indicate both potential benefits and challenges associated with using ammonia as a fuel additive in diesel engines. The conducted research provides a basis for further analysis aimed at optimizing the ammonia co-combustion process to improve efficiency and reduce its environmental impact.
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