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Clean Technol.
Special Issues
Fuel Processing and Internal Combustion Engines
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Fuel Processing and Internal Combustion Engines

A special issue of Clean Technologies (ISSN 2571-8797).

Deadline for manuscript submissions: closed (31 May 2022) | Viewed by 17627

Special Issue Editors

Prof. Dr. Stanislaw Szwaja

E-Mail Website
Guest Editor
Faculty of Mechanical Engineering and Computer Science, Czestochowa University of Technology, Dabrowskiego 69, 42-201 Czestochowa, Poland
Interests: biofuel; fuel processing; gasoline; combustion analysis; diesel engines; emission; internal combustion engines; engineering thermodynamics; alternative fuels; process control; pyrolysis; reaction kinetics theory
Dr. Romualdas Juknelevičius

E-Mail Website
Guest Editor
Faculty of Transport Engineering, Vilnius Gediminas Technical University, LT-03224 Vilnius, Lithuania
Interests: internal combustion engines; current practices and future trends in the end-use of hydrogen; environmental assessment of hydrogen technologies; thermodynamics of Internal combustion engines; alternative fuels and biofuels; simulation and mathematical modelling of combustion process

Special Issue Information

Dear Colleagues,

Clean Technologies is inviting manuscripts for the Special Issue entitled "Fuel Conversion and Internal Combustion Engines", which will be devoted to innovative technologies of fuel processing and internal combustion engines.

This Special Issue encourages publications that broaden the knowledge of various fuel technologies in relation to internal combustion engines. It will cover various aspects of modeling as well as experimental work on the pros and cons of future prospects for internal combustion engines. It will present a unique opportunity to gain a comprehensive view of the various research efforts being carried out to achieve clean and environmentally friendly technologies for the combustion of fuels in internal combustion engines. More precisely, it will focus on various aspects, as follows: technologies for fuel processing, the preparation of fuel to form combustible mixtures, and combustion in the engine.

It is recommended that the articles contain an analysis or at least an indication of the sustainability of the technology or process under consideration.

We invite all researchers in the broadly understood and fascinating field of fuels for internal combustion engines to submit articles to this Special Issue of Clean Technologies journal.

Prof. Dr. Stanislaw Szwaja
Dr. Romualdas Juknelevičius
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. Clean Technologies is an international peer-reviewed open access quarterly 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 1600 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

  • renewable fuels
  • alternative fuels
  • blends
  • injection systems
  • combustion systems
  • engine performance and thermodynamics
  • exhaust toxic emissions
  • fuel thermochemistry
  • fuel pre- and post-processing technologies
  • other related to fuel processing and internal combustion engines

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Further information on MDPI's Special Issue polices can be found here.

Published Papers (4 papers)

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Research

16 pages, 11497 KiB  
Article
Thermal Investigation of a Turbocharger Using IR Thermography
by Hamed Savaripour, Shahab Alaviyoun and Marc A. Rosen
Clean Technol. 2022, 4(2), 329-344; https://doi.org/10.3390/cleantechnol4020019 - 28 Apr 2022
Cited by 2 | Viewed by 4876
Abstract
An experimental thermal survey of a turbocharger was performed in an engine test cell using IR thermography. The emissivity coefficients of housings were specified using a furnace and camera. It was shown that the emissivity of the turbine, compressor, and bearing housings are [...] Read more.
An experimental thermal survey of a turbocharger was performed in an engine test cell using IR thermography. The emissivity coefficients of housings were specified using a furnace and camera. It was shown that the emissivity of the turbine, compressor, and bearing housings are 0.92, 0.65, and 0.74, respectively. In addition, thermocouples were mounted on the housing to validate the temperature of the thermal camera while running in an engine test cell. To compare the data of the thermocouple with data from the thermal camera, an image was taken from the sensor’s location on the housing. The experimental results show that the temperature prediction of the thermal camera has less than 1 percent error. Steady-state tests at various working points and unsteady tests including warm-up and cool-down were performed. The measurements indicate that the turbine casing’s maximum temperature is 839 °C. Furthermore, a thermal image of the bearing housing shows that the area’s average temperature, which is close to the turbine housing, is 7 °C lower than the area close to the compressor housing. The temperature of the bearing housing near the turbine side should be higher; however, the effect of the water passing through the bearing housing decreases the temperature. Full article
(This article belongs to the Special Issue Fuel Processing and Internal Combustion Engines)
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11 pages, 1035 KiB  
Article
Investigating Combustion Process of N-Butanol-Diesel Blends in a Diesel Engine with Variable Compression Ratio
by György Szabados, Kristóf Lukács and Ákos Bereczky
Clean Technol. 2021, 3(3), 618-628; https://doi.org/10.3390/cleantechnol3030037 - 20 Aug 2021
Cited by 4 | Viewed by 3146
Abstract
The search for alternative fuels for internal combustion engines is ongoing. Among the alternatives, plant-based fuels can also be mentioned. Alcohol is not a common fuel for diesel engines because the physical and chemical properties of the alcohols are closer to those of [...] Read more.
The search for alternative fuels for internal combustion engines is ongoing. Among the alternatives, plant-based fuels can also be mentioned. Alcohol is not a common fuel for diesel engines because the physical and chemical properties of the alcohols are closer to those of gasoline. In our research, the combustion properties of diesel-n-butanol mixtures have been investigated to obtain results on the effect of butanol blending on combustion. Among the combustion properties, ignition delay, in-cylinder pressure, and heat release rate can be mentioned. They have been observed under different compression conditions on an engine on which the compression ratio can be adjusted. The method used was a quite simple one, so the speed of the engine was set to a constant 900 rpm without load, while three compression ratios (19.92, 15.27, and 12.53) were adjusted with a fuel flow rate of 13 mL/min and the pre-injection angle of 18° BTDC. Blending butanol into the investigated fuel does not significantly affect maximal values of indicated pressure, while much more effect on the pressure rising rate can be detected. Furthermore, heat release rate and ignition delay increased at every compression ratio investigated. Despite the low blending rates of butanol in the mixtures, butanol significantly affects the combustion parameters, especially at high compression ratios. Full article
(This article belongs to the Special Issue Fuel Processing and Internal Combustion Engines)
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26 pages, 5617 KiB  
Article
Investigation of Performance and Emission Parameters of Hydroxygen (HHO)-Enriched Diesel Fuel with Water Injection in the Compression Ignition Engine
by Romualdas Juknelevičius, Alfredas Rimkus, Saugirdas Pukalskas and Stanislaw Szwaja
Clean Technol. 2021, 3(3), 537-562; https://doi.org/10.3390/cleantechnol3030033 - 26 Jul 2021
Cited by 7 | Viewed by 4400
Abstract
The development of engine technologies and research on combustion processes are focused on finding new generation CI engines with simple control of the combustion process while efficiently maintaining desirable engine performance and meeting emission regulations. This comprehensive study on the relatively low hydrogen [...] Read more.
The development of engine technologies and research on combustion processes are focused on finding new generation CI engines with simple control of the combustion process while efficiently maintaining desirable engine performance and meeting emission regulations. This comprehensive study on the relatively low hydrogen energy fraction (0.65–1.80%), supplied by onboard water electrolysers and on water injection, was performed on the performance and emission parameters of the CI engine. The article presents results of both experiment and simulation about the effect of hydroxygen and water injection on the combustion process, auto-ignition delay, combustion intensity, the temperature of the mixture and engine performance at BMEP of 0.2 MPa, 0.4 MPa, 0.6 MPa, and 0.8 MPa at a speed of 1900 rpm. For the first part, the test engine operated with diesel fuel with 3.5 L/min of hydroxygen gas supplied with an external mixture formation. The HHO has an effect on the combustion process at all range of BMEP. A decrease in BTE and increase in BSFC were noticed during tests. The peak pressure and the rate of heat release decreased, but the NOx decreased as well. The second part of experiment was performed with the injection of a substantial amount of water, 8.4–17.4 kg/h (140–290 cm3/min), and the same amount of hydroxygen. The injection of water further decreased the NOx; therefore, HHO and WI can be used to meet emission regulations. A simulation of the combustion process was carried out with the AVL BOOST sub-program BURN. The AVL BOOST simulation provided a detailed view of the in-cylinder pressure, pressure-rise, combustion intensity shape parameter and SOC. Full article
(This article belongs to the Special Issue Fuel Processing and Internal Combustion Engines)
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12 pages, 3356 KiB  
Article
Impact of Pyrolysis Oil Addition to Ethanol on Combustion in the Internal Combustion Spark Ignition Engine
by Magdalena Szwaja, Mariusz Chwist, Stanislaw Szwaja and Romualdas Juknelevičius
Clean Technol. 2021, 3(2), 450-461; https://doi.org/10.3390/cleantechnol3020026 - 26 May 2021
Cited by 8 | Viewed by 3746
Abstract
Thermal processing (torrefaction, pyrolysis, and gasification), as a technology can provide environmentally friendly use of plastic waste. However, it faces a problem with respect to its by-products. Pyrolysis oil obtained using this technology is seen as a substance that is extremely harmful for [...] Read more.
Thermal processing (torrefaction, pyrolysis, and gasification), as a technology can provide environmentally friendly use of plastic waste. However, it faces a problem with respect to its by-products. Pyrolysis oil obtained using this technology is seen as a substance that is extremely harmful for living creatures and that needs to be neutralized. Due to its relatively high calorific value, it can be considered as a potential fuel for internal combustion spark-ignition engines. In order make the combustion process effective, pyrolysis oil is blended with ethanol, which is commonly used as a fuel for flexible fuel cars. This article presents results from combustion tests conducted on a single-cylinder research engine at full load working at 600 rpm at a compression ratio of 9.5:1, and an equivalence ratio of 1. The analysis showed improvements in combustion and engine performance. It was found that, due to the higher calorific value of the blend, the engine possessed a higher indicated mean effective pressure. It was also found that optimal spark timing for this ethanol-pyrolysis oil blend was improved at a crank angle of 2–3° at 600 rpm. In summary, ethanol-pyrolysis oil blends at a volumetric ratio of 3:1 (25% pyrolysis oil) can successfully substitute ethanol in spark-ignition engines, particularly for vehicles with flexible fuel type. Full article
(This article belongs to the Special Issue Fuel Processing and Internal Combustion Engines)
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