The paper reports the results of a study concerning the influence of ambient conditions on the performance of a marine diesel engine. Starting from the availability of a code previously developed for the thermodynamic simulation of the four-stroke marine engine General Electric 12 V 228, used as prime mover of a marine propulsion system, it was possible to determine the performance of the engine, running in the operating conditions existing in the ship's engine room, for different ambient and seawater temperature values. The correlation between ambient and engine room conditions was assumed on the base of data available in litera-ture. As regards the sea water temperature, which is not strictly dependent on that of the ambient air, in the final part of the paper a sensitivity analysis is reported on the influence of this parameter on engine perfor-mance. The analysis carried out allows to obtain the variation of the performance of the engine and its main components (turbocharger compressor and turbine, cylinders, inlet and exhaust manifolds, intercooler, etc.), as function of the ambient conditions and for different engine loads. The results of this investigation are reported in graphical form and discussed in the paper.

Numerical modelling and analysis of the ambient conditions influence on the performance of a marine diesel engine

M Altosole;G. Benvenuto;U. Campora;Flavio Balsamo
2021

Abstract

The paper reports the results of a study concerning the influence of ambient conditions on the performance of a marine diesel engine. Starting from the availability of a code previously developed for the thermodynamic simulation of the four-stroke marine engine General Electric 12 V 228, used as prime mover of a marine propulsion system, it was possible to determine the performance of the engine, running in the operating conditions existing in the ship's engine room, for different ambient and seawater temperature values. The correlation between ambient and engine room conditions was assumed on the base of data available in litera-ture. As regards the sea water temperature, which is not strictly dependent on that of the ambient air, in the final part of the paper a sensitivity analysis is reported on the influence of this parameter on engine perfor-mance. The analysis carried out allows to obtain the variation of the performance of the engine and its main components (turbocharger compressor and turbine, cylinders, inlet and exhaust manifolds, intercooler, etc.), as function of the ambient conditions and for different engine loads. The results of this investigation are reported in graphical form and discussed in the paper.
File in questo prodotto:
File Dimensione Formato  
1 Articolo Influenza Cond Amb su Presazioni MCI Navali-ch140-Final.pdf

accesso chiuso

Descrizione: Contributo in volume
Tipologia: Documento in versione editoriale
Dimensione 1.47 MB
Formato Adobe PDF
1.47 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11567/1057947
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact