Experimental and simulation-based investigations of marine diesel engine performance against static back pressure

Harsh Sapra, Milinko Godjevac, Klaas Visser, Douwe Stapersma and Chris Dijkstra

Applied Energy, 2017, vol. 204, issue C, 78-92

Abstract: After-treatment technologies are adopted in automobiles and ships to meet strict emission regulations, which increase exhaust back pressure. Furthermore, underwater exhaust systems are employed on board ships to save space, and reduce noise and pollution on working decks. However, water at exhaust outlet creates a flow resistance for the exhaust gases, which adds to the back pressure. High back pressure reduces the operating limits of an engine, increases fuel consumption, and can lead to exhaust smoke. While the effects of back pressure were recognized earlier, there is a lack of experimentally validated research on the performance limits of a turbocharged, marine diesel engine against high back pressure for the entire operating window. The focus of this research is to provide a comprehensive understanding of back pressure effects on marine diesel engine performance, and to identify limits of acceptable back pressure along with methods to tackle high back pressure.

Keywords: Back pressure; Marine diesel engine performance; Mean value engine model; Engine experiments; Underwater exhaust system; Thermal overloading (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (9)

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DOI: 10.1016/j.apenergy.2017.06.111

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