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https://doi.org/10.21278/brod72401

ANALYSIS OF THE PRE-INJECTION CONFIGURATION IN A MARINE ENGINE THROUGH SEVERAL MCDM TECHNIQUES

Carlos Gervasio Rodríguez ; University of Coruña, Spain
María Isabel Lamas   ORCID icon orcid.org/0000-0002-7905-0320 ; University of Coruña, Spain
Juan de Dios Rodríguez ; University of Coruña, Spain
Claudio Caccia ; Politecnico di Milano, Italy

Puni tekst: engleski, pdf (731 KB) str. 1-17 preuzimanja: 45* citiraj
APA 6th Edition
Rodríguez, C.G., Lamas, M.I., Rodríguez, J.d.D. i Caccia, C. (2021). ANALYSIS OF THE PRE-INJECTION CONFIGURATION IN A MARINE ENGINE THROUGH SEVERAL MCDM TECHNIQUES. Brodogradnja, 72 (4), 1-17. https://doi.org/10.21278/brod72401
MLA 8th Edition
Rodríguez, Carlos Gervasio, et al. "ANALYSIS OF THE PRE-INJECTION CONFIGURATION IN A MARINE ENGINE THROUGH SEVERAL MCDM TECHNIQUES." Brodogradnja, vol. 72, br. 4, 2021, str. 1-17. https://doi.org/10.21278/brod72401. Citirano 28.11.2021.
Chicago 17th Edition
Rodríguez, Carlos Gervasio, María Isabel Lamas, Juan de Dios Rodríguez i Claudio Caccia. "ANALYSIS OF THE PRE-INJECTION CONFIGURATION IN A MARINE ENGINE THROUGH SEVERAL MCDM TECHNIQUES." Brodogradnja 72, br. 4 (2021): 1-17. https://doi.org/10.21278/brod72401
Harvard
Rodríguez, C.G., et al. (2021). 'ANALYSIS OF THE PRE-INJECTION CONFIGURATION IN A MARINE ENGINE THROUGH SEVERAL MCDM TECHNIQUES', Brodogradnja, 72(4), str. 1-17. https://doi.org/10.21278/brod72401
Vancouver
Rodríguez CG, Lamas MI, Rodríguez JdD, Caccia C. ANALYSIS OF THE PRE-INJECTION CONFIGURATION IN A MARINE ENGINE THROUGH SEVERAL MCDM TECHNIQUES. Brodogradnja [Internet]. 2021 [pristupljeno 28.11.2021.];72(4):1-17. https://doi.org/10.21278/brod72401
IEEE
C.G. Rodríguez, M.I. Lamas, J.d.D. Rodríguez i C. Caccia, "ANALYSIS OF THE PRE-INJECTION CONFIGURATION IN A MARINE ENGINE THROUGH SEVERAL MCDM TECHNIQUES", Brodogradnja, vol.72, br. 4, str. 1-17, 2021. [Online]. https://doi.org/10.21278/brod72401

Sažetak
The present manuscript describes a computational model employed to characterize the performance and emissions of a commercial marine diesel engine. This model analyzes several pre-injection parameters, such as starting instant, quantity, and duration. The goal is to reduce nitrogen oxides (NOx), as well as its effect on emissions and consumption. Since some of the parameters considered have opposite effects on the results, the present work proposes a MCDM (Multiple-Criteria Decision Making) methodology to determine the most adequate pre-injection configuration. An important issue in MCDM models is the data normalization process. This operation is necessary to convert the available data into a non-dimensional common scale, thus allowing ranking and rating alternatives. It is important to select a suitable normalization technique, and several methods exist in the literature. This work considers five well-known normalization procedures: linear max, linear max-min, linear sum, vector, and logarithmic normalization. As to the solution technique, the study considers three MCDM models: WSM (Weighted Sum Method), WPM (Weighted Product Method) and TOPSIS (Technique for Order Preference by Similarity to Ideal Solution). The linear max, linear sum, vector, and logarithmic normalization procedures brought the same result: -22º CA ATDC pre-injection starting instant, 25% pre-injection quantity and 1-2º CA pre-injection duration. Nevertheless, the linear max min normalization procedure provided a result, which is different from the others and not recommended.

Ključne riječi
marine diesel engine; CFD; emissions; consumption

Hrčak ID: 264504

URI
https://hrcak.srce.hr/264504

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