Numerical study of a marine dual-fuel four-stroke engine

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

13 Citations (Scopus)
358 Downloads (Pure)

Abstract

Continuously increasing environmental demands in conjunction with the planned strong penetration of the LNG, render the use of LNG as an attractive alternative marine fuel. In this framework, the traditional ship propulsion plants based on Diesel engines running with HFO, should be revisited and compared to the more efficient and environmentally friendly propulsion systems that use dual fuel engines. The present study deals with the computational investigation of a marine four-stroke dual fuel (DF) engine, in both diesel and DF mode operation. The engine model was set up in a commercial software and used to compare the performance and emissions of the investigated engine operation at steady state conditions. The engine diesel mode was initially set up and the model was calibrated to adequately represent the engine operation. Subsequently, the engine dual fuel model was set up by considering the injection of two different fuels; methane and pilot diesel fuel. The derived results were analysed for revealing the differences of the engine performance and emissions at each engine mode. In addition, the turbocharger matching at each mode is investigated revealing the challenges due to the completely different air-fuel ratio strategies used in diesel and dual fuel modes, re-spectively.
Original languageEnglish
Title of host publicationMaritime Technology and Engineering III
Subtitle of host publicationProceedings of the 3rd International Conference on Maritime Technology and Engineering (MARTECH 2016, Lisbon, Portugal, 4-6 July 2016)
EditorsCarlos Guedes Soares, T.A. Santos
Place of PublicationLondon
Pages777-783
Number of pages7
Volume2
ISBN (Electronic)9781498795937
DOIs
Publication statusPublished - 21 Jun 2016
Event 3rd International Conference on Maritime Technology and Engineering - Lisbon, Portugal
Duration: 4 Jul 20166 Jul 2016
http://www.centec.tecnico.ulisboa.pt/martech2016/

Conference

Conference 3rd International Conference on Maritime Technology and Engineering
Abbreviated titleMARTECH 2016
CountryPortugal
CityLisbon
Period4/07/166/07/16
Internet address

Keywords

  • environmental demands
  • liquefied natural gas
  • marine fuels
  • dual fuel engines
  • computational investigation
  • marine four-stroke dual fuel engine
  • turbocharger matching

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