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Applied Sciences
Special Issues
Lubricity and Wear of Alternative Engine Fuels and Lubricants
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Lubricity and Wear of Alternative Engine Fuels and Lubricants

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: closed (20 October 2022) | Viewed by 4891

Special Issue Editors

Prof. Dr. Xianguo Hu

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Guest Editor
Institute of Tribology, Hefei University of Technology, Hefei 230009, China
Interests: tribochemistry; tribology environmental design; boundary lubrication; special lubricants
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Karl David Dearn

E-Mail Website
Guest Editor
School of Engineering, College of Engineering and Physical Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
Interests: tribological methods and techniques for enhancing efficiency; design methodologies for mechanical components and devices; acoustic emissions for tribological diagnosis; application of machine learning, AI, and neural networks in tribological systems; energy and materials in manufacturing and transportation; biomedical engineering devices and applications; water systems and resource management
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Tianxia Liu

E-Mail Website
Guest Editor
Chemical Science and Engineering College, North Minzu University, Yinchuan 750001, China
Interests: alternative fuels; soot; additive; lubricity; indirect coal liquefaction diesel

Special Issue Information

Dear Colleagues,

Advanced alternative fuels provide an essential mechanism for reaching global aspirations of peak CO2 emissions and net-zero carbon, driving research and development. There are many opportunities for the development of sustainable fuels, but equally many challenges.

Low heating value, high corrosion rates, and dilution of lubricant oil are just some of the hurdles that must be overcome and drive innovation. A detailed understanding of the tribological properties of alternative fuels forms an essential intellectual aspect for saving energy, increasing the reliability of engine technology, in the selection and optimisation of synthetic processing and the determination of the molecular groups for alternative engine fuels.

What is clear is that there will be a lasting and continuous need for liquid fuels in transportation and other applications. This Special Issue invites contributions on the latest developments and new perspectives on the tribological aspects of alternative fuels in engines from the wider community. Topics will cover but are not be limited to:

  • Preparation of alternative engine fuels ;
  • Physical and chemical properties of alternative engine fuels;
  • Cavitation and erosion of fuel pump;
  • Lubricity of alternative engine fuels;
  • Selection and application of green lubricants in engines;
  • Molecular simulation of wear mechanism of alternative engine fuels;
  • Tribo-measurement of alternative engine fuels;
  • Tribo-catalyzation on rubbing surfaces;
  • Exhaust emissions of alternative engine fuels;
  • The role of soot in friction and wear;

Corrosion behavior of alternative engine fuels (metals, polymers, and other materials)

Prof. Dr. Xianguo Hu
Prof. Dr. Karl Dearn
Prof. Dr. Tianxia Liu
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

  • alternative engine fuels
  • bio-oil
  • biodiesel
  • tribology
  • biodegradation
  • tribochemistry
  • corrosion
  • exhaust emission
  • solid lubricant
  • green lubricant

Published Papers (3 papers)

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Research

10 pages, 2284 KiB  
Article
Tribological Behavior of Biomass Fast Pyrolysis Fuel and Diesel Blends
by Ruhong Song, Huiqiang Yu and Hui Song
Appl. Sci. 2022, 12(5), 2540; https://doi.org/10.3390/app12052540 - 28 Feb 2022
Viewed by 1198
Abstract
The original biomass fast pyrolysis fuel was modified by an emulsification method to obtain emulsified biomass fast pyrolysis fuel with different proportions (the content of biomass fast pyrolysis fuel in the emulsified biomass fuel was 5 wt.%, 10 wt.%, and 20 wt.%, respectively). [...] Read more.
The original biomass fast pyrolysis fuel was modified by an emulsification method to obtain emulsified biomass fast pyrolysis fuel with different proportions (the content of biomass fast pyrolysis fuel in the emulsified biomass fuel was 5 wt.%, 10 wt.%, and 20 wt.%, respectively). Taking commercial 0# diesel as the blank fuel, the friction and wear characteristics of tribo-pair material from an actual piston ring–cylinder liner lubricated by the varied fuels were investigated on a reciprocating friction and wear tester, respectively. The results showed that the friction coefficient and wear of tribo-pair material lubricated with emulsified biomass fuel increased with the biomass fuel content. In the case of 5 wt.% emulsified biomass fuel, the friction coefficient was smaller than 0# diesel, and the wear was not different from 0# diesel. At the same time, the friction coefficient and wear of 5 wt.% emulsified biomass fuel increased with the reciprocating frequency when the load was constant, while they increased with the load when the reciprocating frequency was constant. Full article
(This article belongs to the Special Issue Lubricity and Wear of Alternative Engine Fuels and Lubricants)
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15 pages, 5335 KiB  
Article
Effects of Biomass Fast Pyrolysis Fuel on the Tribological Behaviour of Heavy-Duty Diesel Engine Lubricating Oil
by Ruhong Song, Huiqiang Yu, Hui Song and Xianguo Hu
Appl. Sci. 2022, 12(5), 2360; https://doi.org/10.3390/app12052360 - 24 Feb 2022
Cited by 3 | Viewed by 1344
Abstract
The fuel type not only influences the engine power and exhaust emissions, but dilutes the lubricating oil. We studied the effects of biomass fast pyrolysis fuel, or biofuel, on the tribological behaviour of a fully formulated engine oil (FFEO) used for heavy-duty diesel [...] Read more.
The fuel type not only influences the engine power and exhaust emissions, but dilutes the lubricating oil. We studied the effects of biomass fast pyrolysis fuel, or biofuel, on the tribological behaviour of a fully formulated engine oil (FFEO) used for heavy-duty diesel engines by reciprocating a sliding tribometer, which simulated the tribological conditions of an engine cylinder liner and piston ring. We analysed the surface morphology, surface roughness, and elemental contents of countersurfaces through scanning electron microscopy/energy dispersant spectroscopy and surface roughness measurements. The wear mechanism was studied by analysing the compositions and kinematic viscosities of the oil samples. The results indicate that the friction coefficient increased along with the emulsified biomass fuel (EBF) content in FFEO. The wear mass loss and EBF content were simultaneously increased. The wear mechanism was mainly attributed to the corrosion function of the biofuel. Full article
(This article belongs to the Special Issue Lubricity and Wear of Alternative Engine Fuels and Lubricants)
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15 pages, 6990 KiB  
Article
Study on the Tribological Properties of F-T DS/ZnFe-LDH Composite Lubricating Material
by Jian Wang and Tianxia Liu
Appl. Sci. 2022, 12(2), 599; https://doi.org/10.3390/app12020599 - 08 Jan 2022
Cited by 5 | Viewed by 1391
Abstract
The homemade soot capture device was used to burn Fischer-Tropsch synthetic diesel (F-T diesel) in order to simulate the combustion of F-T diesel in the engine and collect its soot (F-T DS, FS). The zinc-iron hydrotalcite (ZnFe-LDH) and the composite materials of FS [...] Read more.
The homemade soot capture device was used to burn Fischer-Tropsch synthetic diesel (F-T diesel) in order to simulate the combustion of F-T diesel in the engine and collect its soot (F-T DS, FS). The zinc-iron hydrotalcite (ZnFe-LDH) and the composite materials of FS and ZnFe-LDH (F-T DS/ZnFe-LDH, FS/ZnFe-LDH) were prepared by hydrothermal synthesis, and the similarities and differences in tribological characteristics of the above three lubricating materials such as 10# white oil (10# WO) lubricant additives were investigated. FS is an aggregation composed of amorphous carbon and graphite microcrystals. ZnFe-LDH is mainly composed of nanosheets, Zn, and Fe hydroxide particles, with a high degree of crystallization, while FS/ZnFe-LDH is a “sandwich layer” composed of nanosheets and soot particles. Because of the addition of cetyltrimethylammonium bromide and the grafting of a long carbon chain lipophilic group in the preparation process, FS/ZnFe-LDH has better anti-wear properties than the FS and ZnFe-LDH Effect. When FS/ZnFe-LDH is added at 0.2 wt.%, the average friction coefficient (AFC) and average wears scar diameter (AWSD) are at their lowest. Compared with pure 10# WO, the minimum values of AFC and AWSD have dropped by 36.84% and 22.58%, respectively. XPS analysis of the wear scar surface shows that when ZnFe-LDH and FS/ZnFe-LDH are used as lubricating additives of 10# WO, together with the organic matter in the white oil and the iron element in the friction pair, tribochemistry occurs under the combined action of the adsorption force and the tribochemical reaction, a friction protection film containing four elements of C, O, Fe, and Zn is formed on the surface of the wear scar, which effectively reduces the wear and reduces the friction coefficient. Full article
(This article belongs to the Special Issue Lubricity and Wear of Alternative Engine Fuels and Lubricants)
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