Evolution of Scientific Knowledge on the Thermodynamics of the Otto Cycle in Internal Combustion Engines

Authors

DOI:

https://doi.org/10.53591/easi.V3i2.3194

Keywords:

Otto cycle, Internal combustion engines, Thermodynamic analysis, Thermal efficiency, Spark ignition

Abstract

 The transition toward sustainable mobility has redefined the role of the internal combustion engine, requiring thermodynamic optimizations to support transport decarbonization. This study analyzes the bibliometric 
evolution of research on the thermodynamic analysis of the Otto cycle between 2010 and 2025, identifying its intellectual structure and emerging trends. Using a quantitative approach, 686 Scopus-indexed articles were examined through Bibliometrix and VOSviewer. The results reveal sustained growth in scientific production, reaching its highest level in 2025, with Fuel identified as the leading publication source. A shift is observed from conventional thermal efficiency toward exergy-based approaches and the 
integration of alternative fuels such as hydrogen and bioethanol. Furthermore, institutional leadership is concentrated in major technological powers, while Brazil shows a prominent role within Latin America. The study systematizes the available knowledge and identifies future research directions to support energy and environmental sustainability. 

Author Biographies

  • Victor Pachacama-Nasimba, Universidad Técnica Estatal de Quevedo

    Automotive Engineer with a strong postgraduate academic background, including Master's degrees in Mechanical Design and Education in Digital Environments. With more than seven years of experience in higher technical education, he has led strategic academic management processes as Program Coordinator, Director of Community Engagement at the State Technical University of Quevedo, and accreditation manager. His professional profile is distinguished by advanced technical expertise in simulation and design tools such as ANSYS, SolidWorks, and Autodesk, as well as a notable track record in research and project development related to Industry 4.0 and composite materials. As the author of several books and scientific articles, he combines technological innovation with digital pedagogy, directing his professional work toward the optimization of industrial designs and excellence in higher education.

  • Isis Samaniego-Santillán, Universidad Técnica Estatal de Quevedo

    Mechanical Engineering student at the Faculty of Engineering Sciences, State Technical University of Quevedo, Quevedo, Ecuador.

  • Jordan Moreira-Loor, Universidad Técnica Estatal de Quevedo

    Mechanical Engineering student at the Faculty of Engineering Sciences, State Technical University of Quevedo, Quevedo, Ecuador.

  • Britney Rodriguez-Rodriguez, Universidad Técnica Estatal de Quevedo

    Mechanical Engineering student at the Faculty of Engineering Sciences, State Technical University of Quevedo, Quevedo, Ecuador.

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Editor in chief: Raquel Vera-Ortega

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Published

2026-06-25

Issue

Vol. 5 No. 1 (2026): Engineering Innovations for Sustainable Processes

Section

Research articles

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Copyright (c) 2026 Victor Pachacama-Nasimba, Isis Samaniego-Santillán, Jordan Moreira-Loor, Britney Rodriguez-Rodriguez

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How to Cite

Pachacama-Nasimba, V., Samaniego-Santillán, I., Moreira-Loor, J., & Rodriguez-Rodriguez, B. (2026). Evolution of Scientific Knowledge on the Thermodynamics of the Otto Cycle in Internal Combustion Engines. EASI: Engineering and Applied Sciences in Industry, 5(1), 28-39. https://doi.org/10.53591/easi.V3i2.3194