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H2–CO-rich syngas in HCCI Engines: Combustion performance, challenges, and future prospects – A comprehensive review

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  • Ali, Kabbir
  • Mohammedali, Abubaker A.M.
  • Omara, Adil A.M.
  • Ali, Mohamed I.Hassan

Abstract

The increasing global demand for sustainable and low-emission propulsion systems has renewed attention toward H2–CO-rich syngas as a promising fuel for homogeneous charge compression ignition (HCCI) engines. This review comprehensively examines the combustion performance, operational challenges, and technological opportunities associated with using low-calorific-value syngas—derived from coal, biomass, and waste gasification—in HCCI systems. The high hydrogen content of syngas enhances reactivity and promotes lean, low-temperature combustion, substantially reducing nitrogen oxides (NOx) and particulate emissions, whereas carbon monoxide contributes to controllable combustion phasing and improved stability. However, the variability of syngas composition, low energy density, and high auto-ignition propensity complicate ignition control, knock suppression, and load flexibility.

Suggested Citation

  • Ali, Kabbir & Mohammedali, Abubaker A.M. & Omara, Adil A.M. & Ali, Mohamed I.Hassan, 2026. "H2–CO-rich syngas in HCCI Engines: Combustion performance, challenges, and future prospects – A comprehensive review," Energy, Elsevier, vol. 342(C).
    • Handle: RePEc:eee:energy:v:342:y:2026:i:c:s0360544225053009
    DOI: 10.1016/j.energy.2025.139658
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    1. Hasan, M.M. & Rahman, M.M., 2016. "Homogeneous charge compression ignition combustion: Advantages over compression ignition combustion, challenges and solutions," Renewable and Sustainable Energy Reviews, Elsevier, vol. 57(C), pages 282-291.
    2. Komninos, N.P. & Rakopoulos, C.D., 2012. "Modeling HCCI combustion of biofuels: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(3), pages 1588-1610.
    3. Khandal, S.V. & Banapurmath, N.R. & Gaitonde, V.N. & Hiremath, S.S., 2017. "Paradigm shift from mechanical direct injection diesel engines to advanced injection strategies of diesel homogeneous charge compression ignition (HCCI) engines- A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 70(C), pages 369-384.
    4. Liu, Jie & Wang, Junle & Zhao, Hongbo, 2018. "Optimization of the injection parameters and combustion chamber geometries of a diesel/natural gas RCCI engine," Energy, Elsevier, vol. 164(C), pages 837-852.
    5. Kalghatgi, Gautam, 2018. "Is it really the end of internal combustion engines and petroleum in transport?," Applied Energy, Elsevier, vol. 225(C), pages 965-974.
    6. Bhaduri, S. & Contino, F. & Jeanmart, H. & Breuer, E., 2015. "The effects of biomass syngas composition, moisture, tar loading and operating conditions on the combustion of a tar-tolerant HCCI (Homogeneous Charge Compression Ignition) engine," Energy, Elsevier, vol. 87(C), pages 289-302.
    7. Sansaniwal, S.K. & Rosen, M.A. & Tyagi, S.K., 2017. "Global challenges in the sustainable development of biomass gasification: An overview," Renewable and Sustainable Energy Reviews, Elsevier, vol. 80(C), pages 23-43.
    8. Asadullah, Mohammad, 2014. "Barriers of commercial power generation using biomass gasification gas: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 29(C), pages 201-215.
    9. Tungalag, Azjargal & Lee, BongJu & Yadav, Manoj & Akande, Olugbenga, 2020. "Yield prediction of MSW gasification including minor species through ASPEN plus simulation," Energy, Elsevier, vol. 198(C).
    10. Matheus Oliveira & Ana Ramos & Tamer M. Ismail & Eliseu Monteiro & Abel Rouboa, 2022. "A Review on Plasma Gasification of Solid Residues: Recent Advances and Developments," Energies, MDPI, vol. 15(4), pages 1-21, February.
    11. Mukherjee, C. & Denney, J. & Mbonimpa, E.G. & Slagley, J. & Bhowmik, R., 2020. "A review on municipal solid waste-to-energy trends in the USA," Renewable and Sustainable Energy Reviews, Elsevier, vol. 119(C).
    12. Li, Jing & Yu, Xiao & Xie, Jingcheng & Yang, Wenming, 2020. "Mitigation of high pressure rise rate by varying IVC timing and EGR rate in an RCCI engine with high premixed fuel ratio," Energy, Elsevier, vol. 192(C).
    13. Chintala, Venkateswarlu & Subramanian, K.A., 2013. "A CFD (computational fluid dynamics) study for optimization of gas injector orientation for performance improvement of a dual-fuel diesel engine," Energy, Elsevier, vol. 57(C), pages 709-721.
    14. Kumar, Pravin & Rehman, A., 2016. "Bio-diesel in homogeneous charge compression ignition (HCCI) combustion," Renewable and Sustainable Energy Reviews, Elsevier, vol. 56(C), pages 536-550.
    15. Bhaduri, Subir & Jeanmart, Hervé & Contino, Francesco, 2018. "EGR control on operation of a tar tolerant HCCI engine with simulated syngas from biomass," Applied Energy, Elsevier, vol. 227(C), pages 159-167.
    16. Bendu, Harisankar & Murugan, S., 2014. "Homogeneous charge compression ignition (HCCI) combustion: Mixture preparation and control strategies in diesel engines," Renewable and Sustainable Energy Reviews, Elsevier, vol. 38(C), pages 732-746.
    17. Ahmad, Anis Atikah & Zawawi, Norfadhila Abdullah & Kasim, Farizul Hafiz & Inayat, Abrar & Khasri, Azduwin, 2016. "Assessing the gasification performance of biomass: A review on biomass gasification process conditions, optimization and economic evaluation," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 1333-1347.
    18. Jemni, Mohamed Ali & Kantchev, Gueorgui & Abid, Mohamed Salah, 2011. "Influence of intake manifold design on in-cylinder flow and engine performances in a bus diesel engine converted to LPG gas fuelled, using CFD analyses and experimental investigations," Energy, Elsevier, vol. 36(5), pages 2701-2715.
    19. Barelli, L. & Bidini, G. & Gallorini, F. & Servili, S., 2008. "Hydrogen production through sorption-enhanced steam methane reforming and membrane technology: A review," Energy, Elsevier, vol. 33(4), pages 554-570.
    20. Jithin, E.V. & Raghuram, G.K.S. & Keshavamurthy, T.V. & Velamati, Ratna Kishore & Prathap, Chockalingam & Varghese, Robin John, 2021. "A review on fundamental combustion characteristics of syngas mixtures and feasibility in combustion devices," Renewable and Sustainable Energy Reviews, Elsevier, vol. 146(C).
    21. Askari, Omid & Vien, Kevin & Wang, Ziyu & Sirio, Matteo & Metghalchi, Hameed, 2016. "Exhaust gas recirculation effects on flame structure and laminar burning speeds of H2/CO/air flames at high pressures and temperatures," Applied Energy, Elsevier, vol. 179(C), pages 451-462.
    22. M. Mofijur & M.M. Hasan & T.M.I. Mahlia & S.M. Ashrafur Rahman & A.S. Silitonga & Hwai Chyuan Ong, 2019. "Performance and Emission Parameters of Homogeneous Charge Compression Ignition (HCCI) Engine: A Review," Energies, MDPI, vol. 12(18), pages 1-21, September.
    23. Martínez, Juan Daniel & Mahkamov, Khamid & Andrade, Rubenildo V. & Silva Lora, Electo E., 2012. "Syngas production in downdraft biomass gasifiers and its application using internal combustion engines," Renewable Energy, Elsevier, vol. 38(1), pages 1-9.
    24. Gan, Suyin & Ng, Hoon Kiat & Pang, Kar Mun, 2011. "Homogeneous Charge Compression Ignition (HCCI) combustion: Implementation and effects on pollutants in direct injection diesel engines," Applied Energy, Elsevier, vol. 88(3), pages 559-567, March.
    25. Fiore, M. & Magi, V. & Viggiano, A., 2020. "Internal combustion engines powered by syngas: A review," Applied Energy, Elsevier, vol. 276(C).
    26. Ramos, Ana & Rouboa, Abel, 2022. "Life cycle thinking of plasma gasification as a waste-to-energy tool: Review on environmental, economic and social aspects," Renewable and Sustainable Energy Reviews, Elsevier, vol. 153(C).
    27. Clenci, Adrian Constantin & Iorga-Simăn, Victor & Deligant, Michael & Podevin, Pierre & Descombes, Georges & Niculescu, Rodica, 2014. "A CFD (computational fluid dynamics) study on the effects of operating an engine with low intake valve lift at idle corresponding speed," Energy, Elsevier, vol. 71(C), pages 202-217.
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