Test Method for Determining the Chemical Emissions of a Marine Diesel Engine Exhaust in Operation

Author:

Korczewski Zbigniew1

Affiliation:

1. Gdańsk University of Technology , Poland

Abstract

Abstract The article briefly describes the problem of air pollution caused by sea-going ships and the resulting restrictions on the emission of toxic and harmful chemical compounds in the exhaust of marine engines, introduced by the International Maritime Organization (IMO) under the International Convention for the Prevention of Sea Pollution from Ships (MARPOL 73/78). Such emissions provide a significant metrological problem, not only for the owners of operating sea-going ships, but also for shipyards, maritime administration offices and environmental protection inspectors. For this reason, the article’s author is developing research issues related to the diagnosing the exhaust emissions of marine engines under operating conditions, i.e. with limited control (measurement) susceptibility. This is particularly important in the period of intensive implementation of a new category of marine fuel, so-called modified fuels with low sulphur content. As part of the problem, a computational model of the parameters characterising the exhaust emissions of a marine engine in operation is presented in this article. This model is based on the measurement of the engine’s control parameters, using a standard (stationary) measurement system and a portable diagnostic system, configured for the purpose of this research. Presented here are representative measurements and calculation results (both obtained by the author and provided by the manufacturer) from the chemical exhaust gas emissivity of one of the ship engines operated. These confirm the adequacy of the calculation model developed and the diagnostic effectiveness of the measuring equipment applied. The methodology developed for experimental testing may also be implemented for the operation of other types of marine engines, provided that the basic chemical composition of the fuel supply and the engine load characteristics and hourly fuel consumption are known. Moreover, there is the possibility of indicating the cylinders and measuring the chemical composition of exhaust gases in the high-temperature part of the exhaust duct.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Ocean Engineering

Reference23 articles.

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2. 2. J. Janota, ‘Przepływomierze masowe Coriolisa’, Konferencja „Smary i Oleje”, 2020. [‘Coriolis mass flow meters’].

3. 3. Z. Korczewski, Endoskopia silników okrętowych. 2008. [Endoscopy of marine engines].

4. 4. Z. Korczewski, ‘Contemporary diagnostic methods for ship engines: A report on scientific research activity of the Polish Naval Academy in this field’, Polish Maritime Research. 2008.10.2478/v10012-007-0064-3

5. 5. Z. Korczewski, ‘Analysing the potential for application of the phase shift method in endoscopic examination of marine engines’, Polish Maritime Research. 2013.10.2478/pomr-2013-0003

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