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Potential for the use of SAF in internal combustion piston engines
1
Department of Engines and Maintenance
Engineering, Faculty of Mechanical Engineering, Military University of Technology, Poland
Submission date: 2025-06-11
Final revision date: 2025-08-07
Acceptance date: 2025-09-08
Online publication date: 2025-09-24
Publication date: 2026-01-14
Corresponding author
Janusz Chojnowski
Department of Engines and Maintenance Engineering, Faculty of Mechanical Engineering, Military University of Technology, gen. Sylwestra Kaliskiego 2, 00-908, Warsaw, Poland
Department of Engines and Maintenance Engineering, Faculty of Mechanical Engineering, Military University of Technology, gen. Sylwestra Kaliskiego 2, 00-908, Warsaw, Poland
Combustion Engines 2026,204(1), 132-143
KEYWORDS
TOPICS
ABSTRACT
This review examines the feasibility of using Sustainable Aviation Fuels (SAFs) in internal combustion piston engines. It analyzes major SAF types and pathways, combustion and emission characteristics, material compatibility, certification frameworks, and economic considerations. The findings confirm that paraffinic SAFs (e.g. HEFA, FT) are suitable drop-in fuels for compression-ignition engines, offering lower emissions and compatibility with existing systems. Spark-ignition engines remain limited by octane requirements. The review concludes that SAF can significantly reduce environmental impact in piston-engine applications, though full deployment is constrained by cost, certification, and fuel availability.
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