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Energies
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Advances in Combustion and Thermodynamics of Internal Combustion Engine
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Advances in Combustion and Thermodynamics of Internal Combustion Engine

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

Deadline for manuscript submissions: closed (22 October 2022) | Viewed by 30202

Special Issue Editors

Prof. Dr. Baowei Fan

E-Mail Website
Guest Editor
School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China
Interests: internal combustion engine; rotary engine; alternative fuel for engine; jet ignition mechanism; reduction of combustion mechanism; combustion; emission
Dr. Jiaying Pan

E-Mail Website
Guest Editor
School of Mechanical Engineering, Tianjin University, Tianjin 300072, China
Interests: low-temperatre combustion; carbon-neutral fuel, and engine knocking
Dr. Yuqiang Li

E-Mail Website
Guest Editor
Department of Energy Science and Engineering, Central South University, Changsha 410083, China
Interests: advanced combustion and emissions control of internal combustion engine; production and application of biofuel; battery thermal management system of NEVs
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The extensive use of internal combustion engines has promoted social progress. In the past decade, and extending into the future, improving thermal efficiency and reducing carbon emissions have and will be the core tasks of internal combustion engines. Advanced combustion modes and novel thermodynamic cycles are important aspects of achieving high-efficiency, clean, and low-carbon development of internal combustion engines. In recent years, advanced combustion technologies characterized by high-pressure, low-temperature, and lean combustion have shown great potential in terms of efficiency enhancement and emission reduction. Under the background of carbon neutrality, whether it is to continuously break through the thermal efficiency limits or improve the comprehensive thermal efficiency of variable operating conditions, the combustion of advanced engines will move towards extreme operating conditions, which will result in combustion instabilities and irregular combustion problems. In addition, with the changes in ignition and combustion strategies, in-cylinder thermodynamic states and thermodynamic processes are significantly modified, which have a significant influence on combustion dynamics, engine economy, and emission characteristics. Therefore, relevant studies on combustion and thermodynamics are of vital importance for the design and development of high-performance engines.

This Special Issue aims to present and disseminate the most recent advances related to the combustion theory, combustion technologies, ignition technologies, combustion experiments and simulations, advanced thermodynamic cycles, low-carbon, and carbon-neutral fuels, pre-ignition and engine knock, and conventional and non-conventional emissions of internal combustion engines.

Prof. Dr. Baowei Fan
Dr. Jiaying Pan
Dr. Yuqiang Li
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

  •  low-temperature combustion, high-pressure combustion, and lean combustion technologies
  •  ignition and combustion enhancement technologies
  •  advanced thermodynamic cycles
  •  low-carbon and carbon-neutral fuels
  •  pre-ignition and engine knock
  •  optical diagnostics on combustion
  •  engine combustion experiments
  •  engine combustion simulations
  •  pollution emissions
  •  combustion and emissions in rotary engines
  •  combustion performance of other types of special engines

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Published Papers (3 papers)

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Research

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13 pages, 2882 KiB  
Article
Influence of Intake Port Structure on the Performance of a Spark-Ignited Natural Gas Engine
by Jie Pan, Junfang Ma, Junyin Li, Hongzhe Liu, Jing Wei, Jingjing Xu, Tao Zhu, Hairui Zhang, Wei Li and Jiaying Pan
Energies 2022, 15(22), 8545; https://doi.org/10.3390/en15228545 - 15 Nov 2022
Cited by 4 | Viewed by 1984
Abstract
Spark-ignited natural gas engines have received increasing attention in the heavy-duty market due to their low cost and reliability advantages. However, there are still some issues with natural gas engines retrofitted from 10 to 15 L diesel engines, which is a valuable medium-term [...] Read more.
Spark-ignited natural gas engines have received increasing attention in the heavy-duty market due to their low cost and reliability advantages. However, there are still some issues with natural gas engines retrofitted from 10 to 15 L diesel engines, which is a valuable medium-term goal for the automotive industry. In this work, the effect of intake port structure on the performance of a spark-ignited heavy-duty natural gas engine was investigated by multidimensional numerical simulations. A newly designed intake port was proposed, with strengthened in-cylinder turbulent kinetic energy and homogeneous air-fuel mixtures. Bench tests show that the proposed intake port has impressive thermal efficiency, cycle variation, and acceptable emissions performance. The effective thermal efficiency improves from 41.0% to 41.4%, and the cycle variation is 36% lower than traditional schemes. However, with the accelerated flame propagation, the in-cylinder temperature and NOx emission of the mixed-flow port increase while the CO emission decreases. In summary, a proper balance of in-cylinder swirl and tumble flow can significantly affect the economy and stability of natural gas engines. The proposed structure solves the inherent problems of slow natural gas flame propagation and harmful cyclic variations. Full article
(This article belongs to the Special Issue Advances in Combustion and Thermodynamics of Internal Combustion Engine)
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10 pages, 2673 KiB  
Article
New Insights into Abnormal Combustion Phenomena Induced by Diesel Spray-Wall Impingement under Engine-Relevant Conditions
by Zhijie Li, Jie Pan, Wei Li, Xiangting Wang, Haiqiao Wei and Jiaying Pan
Energies 2022, 15(8), 2941; https://doi.org/10.3390/en15082941 - 17 Apr 2022
Cited by 5 | Viewed by 2171
Abstract
High altitude and low temperature is the common extreme environment for internal combustion engines. Under such operating conditions, heavy-duty diesel engines often suffer from serious abnormal combustion, such as knocking combustion, which results in piston crown breakdown and cylinder head erosion. Spray-wall impingement [...] Read more.
High altitude and low temperature is the common extreme environment for internal combustion engines. Under such operating conditions, heavy-duty diesel engines often suffer from serious abnormal combustion, such as knocking combustion, which results in piston crown breakdown and cylinder head erosion. Spray-wall impingement and pool fires are considered potential causes; however, the detailed mechanism remains poorly understood owing to the lack of research data. In this study, for the first time, the destructive abnormal combustion induced by diesel spray-wall impingement was identified using an optical rapid compression machine under engine-relevant conditions at high altitudes. Combining instantaneous pressure and temperature measurements with simultaneously recorded high-speed photography gives useful insights into understanding the detailed combustion processes. The experimental results show that depending on the extent of diesel spray-wall impingement, supersonic detonation-like reaction fronts featuring bright luminosity can be observed. The propagation of these reaction fronts in-cylinder results in severe pressure oscillations with an amplitude approaching hundreds of atmospheres, which is like the super-knock events in boosted direct-injection spark-ignition engines. Further parametric analysis indicates that the interplay between the diffusion combustion controlled by diesel spray and the premixed combustion dominated by attached film evaporation results in the formation of abnormal combustion. Destructive reaction fronts tend to occur at a prolonged ignition delay time, which facilitates the mixing between diesel evaporation and hot air. Full article
(This article belongs to the Special Issue Advances in Combustion and Thermodynamics of Internal Combustion Engine)
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Review

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60 pages, 6403 KiB  
Review
Improving Thermal Efficiency of Internal Combustion Engines: Recent Progress and Remaining Challenges
by Rami Y. Dahham, Haiqiao Wei and Jiaying Pan
Energies 2022, 15(17), 6222; https://doi.org/10.3390/en15176222 - 26 Aug 2022
Cited by 39 | Viewed by 24919
Abstract
Improving thermal efficiency and reducing carbon emissions are the permanent themes for internal combustion (IC) engines. In the past decades, various advanced strategies have been proposed to achieve higher efficiency and cleaner combustion with the increasingly stringent fuel economy and emission regulations. This [...] Read more.
Improving thermal efficiency and reducing carbon emissions are the permanent themes for internal combustion (IC) engines. In the past decades, various advanced strategies have been proposed to achieve higher efficiency and cleaner combustion with the increasingly stringent fuel economy and emission regulations. This article reviews the recent progress in the improvement of thermal efficiency of IC engines and provides a comprehensive summary of the latest research on thermal efficiency from aspects of thermodynamic cycles, gas exchange systems, advanced combustion strategies, and thermal and energy management. Meanwhile, the remaining challenges in different modules are also discussed. It shows that with the development of advanced technologies, it is highly positive to achieve 55% and even over 60% in effective thermal efficiency for IC engines. However, different technologies such as hybrid thermal cycles, variable intake systems, extreme condition combustion (manifesting low temperature, high pressure, and lean burning), and effective thermal and energy management are suggested to be closely integrated into the whole powertrains with highly developed electrification and intelligence. Full article
(This article belongs to the Special Issue Advances in Combustion and Thermodynamics of Internal Combustion Engine)
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