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Marine Engines Performance and Emissions Ⅲ
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Marine Engines Performance and Emissions Ⅲ

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Ocean Engineering".

Deadline for manuscript submissions: closed (1 July 2023) | Viewed by 3361

Special Issue Editor

Prof. Dr. María Isabel Lamas Galdo

E-Mail Website
Guest Editor
Escola Politécnica de Enxeñaría de Ferrol, Campus Industrial de Ferrol, University of Coruña, 15403 Ferrol, Spain
Interests: computational fluid dynamics; hydrodynamics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Following on from the previous Special Issues “Marine Engines Performance and Emissions” and “Marine Engines Performance and Emissions II”, this third Special Issue continues to focus on all aspects related to marine engine performance and emissions. Works related to emissions and emission reduction technology are welcome, such as alternative fuels, engine modifications, and after-treatment technology. Innovative aspects related to performance will also be considered. Contributors are advised to submit papers that fit in to one or more of the subjects indicated below. However, papers that are not directly related to these areas shall also be considered in cases of particular interest to this Special Issue.

  • Emissions from marine engines, reduction, and control;
  • After-treatments;
  • Conventional and alternative fuels;
  • Mathematical models;
  • Marine engine technology;
  • Combustion;
  • Design;
  • Control;
  • Injection;
  • Lubrication and lubes;
  • Auxiliary systems;
  • Transport.

Dr. María Isabel Lamas Galdo
Guest Editor

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. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly 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.

Published Papers (2 papers)

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Research

26 pages, 6532 KiB  
Article
Methodological Design Optimization of a Marine LNG Internal Combustion Gas Engine to Burn Alternative Fuels
by Ander Ruiz Zardoya, Iñigo Oregui Bengoetxea, Angel Lopez Martinez, Iñaki Loroño Lucena and José A. Orosa
J. Mar. Sci. Eng. 2023, 11(6), 1194; https://doi.org/10.3390/jmse11061194 - 08 Jun 2023
Cited by 5 | Viewed by 1526
Abstract
Marine emission policies are becoming more demanding; thus, ship propulsion and power generation technologies need to be adapted to current scenarios. LNG is already considered to be a transition fuel, and new alternative marine fuels are emerging. The aim of this study was [...] Read more.
Marine emission policies are becoming more demanding; thus, ship propulsion and power generation technologies need to be adapted to current scenarios. LNG is already considered to be a transition fuel, and new alternative marine fuels are emerging. The aim of this study was to develop an innovative methodology to optimize and adapt the combustion system of an LNG internal combustion marine engine to burn alternative marine fuels. The present study was based on LBG, but the methodology could be replicated with other fuels. A total of six tests were carried out, with three prechamber designs and three spark plug designs. Each test was carried out in a single-cylinder engine with two types of high-methane-number fuel. The influence on thermal efficiency parameters such as the prechamber volume, the orientation of the flame holes, and the existence of a central hole was studied. In the case of the spark plug, the influence of the amount of precious metal in the electrode, its shape and its insertion into the prechamber were analysed. Experiments showed that by modifying both the prechamber and the spark plug, maximum improvements in thermal efficiency of 1.9% can be achieved. Those improvements allowed the LBG engine to suffer only a 4.3% thermal efficiency reduction, as opposed to its LNG counterpart. By applying the proposed methodology, the thermal efficiency of commercially available internal combustion gas engines could be improved. Full article
(This article belongs to the Special Issue Marine Engines Performance and Emissions Ⅲ)
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14 pages, 3315 KiB  
Article
Multi-Criteria Analysis to Determine the Most Appropriate Fuel Composition in an Ammonia/Diesel Oil Dual Fuel Engine
by Carlos Gervasio Rodríguez, María Isabel Lamas, Juan de Dios Rodríguez and Amr Abbas
J. Mar. Sci. Eng. 2023, 11(4), 689; https://doi.org/10.3390/jmse11040689 - 24 Mar 2023
Cited by 4 | Viewed by 1294
Abstract
The possibility to employ alternative fuels is gaining special interest in the marine sector. There are several suitable candidates for traditional fossil fuels substitution. Among them, ammonia is a promising solution that allows progress on decarbonization since the ammonia molecule does not contain [...] Read more.
The possibility to employ alternative fuels is gaining special interest in the marine sector. There are several suitable candidates for traditional fossil fuels substitution. Among them, ammonia is a promising solution that allows progress on decarbonization since the ammonia molecule does not contain carbon. Hence, the present work analyzes the use of ammonia as a potential fuel for a marine engine. Particularly, a dual fuel mode ammonia/diesel oil operation is proposed. As expected, the carbon dioxide emissions are reduced as the proportion of ammonia is increased. Nevertheless, other non-desirable substances are generated such as non-reacted ammonia, NOx and N2O. Due to these opposing effects, a multi-criteria analysis is proposed to characterize the most appropriate proportion of ammonia in the fuel. The environmental damage of the different pollutants was considered. Due to the important environmental adverse effects of NOx and N2O, only a maximum 20% ammonia percentage on the fuel was obtained as the most appropriate option. A higher ammonia content leads to excessive concentrations of NOx and N2O being emitted to the environment. Full article
(This article belongs to the Special Issue Marine Engines Performance and Emissions Ⅲ)
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