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Technical Advances in Combustion Engines: Efficiency, Power and Fuels

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Mechanical Engineering".

Deadline for manuscript submissions: 20 May 2026 | Viewed by 933

Special Issue Editors


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Guest Editor
Faculty of Mechanics and Technology, Rzeszow University of Technology, Stalowa Wola, Poland
Interests: neural network; manufacturing; processes; repair
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
CMT-Clean Mobility & Thermofluids, Universitat Politècnica de València, 6D-UPV, Camí de Vera, S/N, 46022 Valencia, Spain
Interests: thermofluids; internal combustion engines; powertrains for transport; emissions reduction and fuel efficient powertrains
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Combustion engines have been, and continue to be, the primary source of energy for passenger and freight transport, as well as for industry and the energy sector. Despite the growing significance of alternative energy sources, combustion engines are still evolving. This evolution is driven by the need for greater efficiency, higher power output, and the integration of alternative fuels. Recent technological advancements focus on optimizing thermal efficiency, reducing emissions, and incorporating alternative fuels to comply with increasingly stringent environmental regulations.

We are pleased to invite you to contribute to this Special Issue on "Technical Advances in Combustion Engines: Efficiency, Power and Fuels".

This Special Issue aims to showcase innovative research that enhances the efficiency, performance, and sustainability of combustion engines. The scope includes studies on novel combustion strategies, advanced techniques for improving thermal efficiency, engine downsizing, boosting and hybridization methods, waste heat recovery, thermodynamic optimization, and next-generation fuels such as biofuels and hydrogen. It also covers emission reduction technologies, after-treatment systems, emerging digital technologies for engine optimization, applications of artificial intelligence and machine learning in combustion engine development, and life cycle analysis of combustion engine advancements and their environmental impact.

We welcome original research articles and review papers. Research areas may include, but are not limited to, the following:

  1. Advances in combustion modeling; Engine cooling strategies.
  2. Friction reduction; Application of new materials for the manufacture and repair of combustion engines;
  3. Systems for reducing energy and increasing the efficiency of combustion engines; Energy recovery systems during operation; strategies for increasing the power of combustion engines.
  4. Turbocharging; Variable valve timing; Innovative fuel injection techniques.
  5. Hydrogen combustion; Synthetic fuels; Biofuels; Fuel-blending strategies.
  6. Catalysts; Particulate filters; NOx reduction methods; Low-carbon technologies.
  7. Artificial intelligence-driven engine tuning; Predictive maintenance; Real-time monitoring systems.

This Special Issue will contribute to the ongoing evolution of combustion engines, supporting their role in a decarbonized and energy-efficient future.
We look forward to receiving your contributions.

Dr. Denys Baranovskyi
Prof. Dr. Jose Ramon Serrano
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • efficiency
  • power
  • fuels
  • emissions reduction
  • engine optimization
  • new materials
  • turbocharging
  • artificial intelligence
  • hydrogen combustion
  • waste heat recovery

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Published Papers (1 paper)

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Research

22 pages, 5096 KB  
Article
Impact of Hydrogen-Methane Blending on Industrial Flare Stacks: Modeling of Thermal Radiation Levels and Carbon Dioxide Intensity
by Paweł Bielka, Szymon Kuczyński and Stanisław Nagy
Appl. Sci. 2025, 15(17), 9479; https://doi.org/10.3390/app15179479 - 29 Aug 2025
Viewed by 530
Abstract
Regulatory changes related to the policy of reducing CO2 emissions from natural gas are leading to an increase in the share of hydrogen in gas transmission and utilization systems. In this context, the impact of the change in composition on thermal radiation [...] Read more.
Regulatory changes related to the policy of reducing CO2 emissions from natural gas are leading to an increase in the share of hydrogen in gas transmission and utilization systems. In this context, the impact of the change in composition on thermal radiation zones should be assessed for flaring during startups, scheduled shutdowns, maintenance, and emergency operations. Most existing models are calibrated for hydrocarbon flare gases. This study assesses how the CH4–H2 blends affect thermal radiation zones using a developed solver based on the Brzustowski–Sommer methodology with composition-dependent fraction of heat radiated (F) and range-dependent atmospheric transmissivity. Five blends, 0–50% (v/v) H2, were analyzed for a 90 m stack at wind speeds of 3 and 5 m·s−1. Comparisons were performed at constant molar (standard volumetric) throughput to isolate composition effects. Adding H2 contracted the radiation zones and reduced peak ground loads. Superposition analysis for a multi-flare layout indicated that replacing one 100% (v/v) CH4 flare with a 10% (v/v) H2 blend reduced peak ground radiation. Emission-factor analysis (energy basis) showed reductions of 3.24/3.45% at 10% (v/v) H2 and 7.01/7.44% at 20% (v/v) H2 (LHV/HHV); at 50% (v/v) H2, the decrease reached 22.18/24.32%. Hydrogen blending provides coupled safety and emissions co-benefits, and the developed framework supports screening of flare designs and operating strategies as blends become more prevalent. Full article
(This article belongs to the Special Issue Technical Advances in Combustion Engines: Efficiency, Power and Fuels)
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