Science. Business. Society.
Vol. 11 (2026), Issue 1, pg(s) 11-14

SCIENCE

Uncertainty analysis of man B&W 6S70ME-C diesel engine based on measured operating parameters in each cylinder

  • 1 Faculty of Engineering, University of Rijeka, Rijeka, Croatia
  • 2 Department of maritime sciences, University of Zadar, Zadar, Croatia

Abstract

In this paper, an uncertainty analysis is performed related to the marine MAN B&W 6S70ME-C diesel engine. Uncertainty analysis is based on six different engine operating parameters (Maximum pressure, Compression pressure, Mean indicated pressure, Exhaust Gas Outlet Temperature, Cooling Fresh Water Outlet Temperature, and Piston Cooling Oil Outlet Temperature) measured in each engine cylinder. Various engine loads are observed. Exhaust Gas Outlet Temperature uncertainties are the highest in comparison to uncertainties of all other considered operating parameters. The highest Exhaust Gas Outlet Temperature uncertainty is detected at engine load of 90% and is equal to ±2.421%, while considering all observed engine loads, Exhaust Gas Outlet Temperature uncertainty is equal to ±4.296%. Overall uncertainty of the analysis performed in this paper (which considers all observed operating parameters at all engine loads) is equal to ±4.837%, which also falls within the range of the recommended uncertainty limit (±5%).

Keywords

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