A methodology for single turbocharger-marine engine matching

Mizythras, Panagiotis and Boulougouris, Evangelos and Theotokatos, Gerasimos; (2019) A methodology for single turbocharger-marine engine matching. In: Proceedings of MOSES 2019 2nd International Conference on Modelling and Optimisation of Ship Energy Systems. University of Strathclyde, GBR, pp. 241-247. ISBN 9781909522510

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Abstract

The turbocharger is an essential component for the propulsion and auxiliary engines of the modern ships’ power plants as it supplies the required air amount thus affecting the engine cylinders combustion process. In this respect, the matching of the marine engine with their turbocharging system is crucial for ensuring the engine efficiency as well as the propulsion systems response. In this paper, a new methodology consisting of three phases is proposed for facilitating the matching and selection process of a single turbocharging system with a two-stroke marine engine. The first phase included the estimation of the engine performance and the development of the compressor families’ databases by employing a single engine cylinder zero-dimensional model and a parametric compressor tool, respectively. The second phase involves the compressor maps-engine matching checking and the identification of the compressor maps that satisfy the set requirements, whereas the third phase includes the turbine matching along with the selection of the optimal compressor and turbine to minimise the specific engine fuel consumption for a selected propeller curve. The derived results indicate that the developed method can identify an appropriate turbocharger that is possible to improve the engine fuel consumption by 2−4%.

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