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Energies
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Optimization of Efficient Clean Combustion Technology: 2nd Edition
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Optimization of Efficient Clean Combustion Technology: 2nd Edition

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "I2: Energy and Combustion Science".

Deadline for manuscript submissions: 29 August 2025 | Viewed by 291

Special Issue Editors

Dr. Jianguo Zhu

E-Mail Website
Guest Editor
Institute of Engineering Thermophysics, University of Chinese Academy of Sciences, Beijing, China
Interests: combustion; thermal engineering; environmental engineering
Special Issues, Collections and Topics in MDPI journals
Dr. Mingxin Xu

E-Mail Website
Guest Editor
National Engineering Research Center of New Energy Power Generation, North China Electric Power University, Beijing 102206, China
Interests: waste composites recovery; waste wind turbine blade recovery; pollutants control
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Efficient clean combustion technology has been a hot topic focus of both experimental investigations and industrial applications. With a large-scale increase in the application of renewable energy electricity in the world, such as wind power, boiler operation needs to be changed, such as running an ultra-low load and increasing load at a rapid rate, to meet the requirements of grid security. The key problems facing the industry include low efficiency, high NOx emission, slow load variation rate, flame extinction, and so on. Some novel methods and technologies are being investigated and tested to overcome these difficulties, supporting the development and application of efficient clean combustion technology.

The Special Issue aims to publish review papers and research papers involving the topics of novel combustion technology, basic principle or theory for improving combustion efficiency or decreasing pollutant emissions, industrial application analyses, and system optimization, etc. By browsing this Special Issue, the readers could clearly, or at least partially, review the newest technologies and progresses in clean combustion technology.

Dr. Jianguo Zhu
Dr. Mingxin Xu
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. Energies 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 2600 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

  • flameless combustion
  • preheating combustion
  • flexible combustion
  • low load
  • peak shaving
  • pollutants formation and control
  • combustion optimization
  • industrial application

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Published Papers (1 paper)

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Research

18 pages, 5968 KiB  
Article
Assessment of Charge Dilution Strategies to Reduce Fuel Consumption in Natural Gas-Fuelled Heavy-Duty Spark Ignition Engines
by Davide Di Domenico, Pierpaolo Napolitano, Dario Di Maio and Carlo Beatrice
Energies 2025, 18(8), 2072; https://doi.org/10.3390/en18082072 - 17 Apr 2025
Viewed by 159
Abstract
The need to decarbonize the road transport sector is driving the evaluation of alternative solutions. From a long-term perspective, biomethane and e-methane are particularly attractive as green energy carriers and a part of the solutions for the sustainable freight on-road transport, as they [...] Read more.
The need to decarbonize the road transport sector is driving the evaluation of alternative solutions. From a long-term perspective, biomethane and e-methane are particularly attractive as green energy carriers and a part of the solutions for the sustainable freight on-road transport, as they offer significant CO2-equivalent emissions savings in a net Well-to-Wheel assessment. However, to make methane-fuelled spark ignition (SI) heavy-duty (HD) engines competitive in the market, their efficiency must be comparable to the top-performing diesel applications that dominate the sector. To this end, dilution techniques such as exhaust gas recirculation (EGR) or lean air–fuel mixtures represent promising solutions. Within limits specific to the engine’s tolerance to the used strategy, charge dilution can improve thermal efficiency impact on the pumping and wall heat loss, and the heat capacity ratio (γ). However, their potential has never been explored in the case of methane SI HD engines characterized by a semi diesel-like combustion system architecture. This work presents an experimental study to characterize the energy and pollutant emission performance of a state-of-the-art SI HD gas single-cylinder engine (SCE) operating with EGR or with lean conditions. The engine type is representative of most HD powertrains used for long-haul purposes. The designed test plan is representative of the majority of on-road operating conditions providing an overview of the impact of the two dilution methods on the overall engine performance. The results highlight that both techniques are effective for achieving significant fuel savings, with lean combustion being more tolerable and yielding higher efficiency improvements (10% peak vs. 5% with EGR). Full article
(This article belongs to the Special Issue Optimization of Efficient Clean Combustion Technology: 2nd Edition)
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