Advances in Alternative Fuel Engines and Combustion Technology

Dear Colleagues,

Since the advent of gasoline and diesel internal combustion engines, the exploration of alternative fuels has never ceased. From gas fuel to bio-fuels, and further to e-fuels, renewable fuels, and green zero-carbon fuels under carbon neutrality goals, fuel types have transitioned from singular solutions to multi-energy complementarity. Moreover, emission reduction objectives have also evolved from localized pollutant control to full lifecycle carbon neutrality upgrades. Therefore, driven by different fuels, combustion technologies have undergone paradigm shifts. Innovative combustion modes, such as JCCI, SPCCI, HCCI, RCCI, PCCI, etc., have emerged, forming multi-dimensional synergies with other critical engine technologies. Furthermore, empowered by artificial intelligence, deep learning-based cutting-edge research directions demonstrate vast potential for combustion technology innovation.

This Special Issue emphasizes the diversity of alternative fuels, highlights the fundamental theories and practical development of alternative fuel internal combustion engines, and encourages the application of advanced combustion technologies in this field.

Topics of interest include, but are not limited to, the following:

• Studies on spray breakup, wall impingement, atomization, and macroscopic structures of alternative fuels;
• Physical and chemical modification of alternative fuel for promotion of combustion;
• Research on ignition processes and combustion characteristics of alternative fuels under advanced combustion modes;
• Kinetic modeling of combustion reactions for alternative fuels in internal combustion engines;
• Development of fuel supply and injection systems for alternative fuel engines;
• Combustion system for alternative fuel internal combustion engines;
• Emission characteristics and aftertreatment system development for alternative fuel engines;
• Lifecycle analysis and socio-economic impact assessment of alternative fuels;
• Application of artificial intelligence, digital twin, and other technologies in combustion management of internal combustion engines.

This Special Issue serves as a platform to advance research on alternative fuels. Researchers from academia, industry, and institutions are invited to submit original research articles, reviews, and case studies. 

Dr. Pengbo Dong
Dr. Dongsheng Dong
Dr. Fuxing Wei
Guest Editors

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