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The issue of the atmosphere protection against toxic compounds gas emissions in maritime transport

Witkowski K.

Journal of KONES

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2014

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Vol. 21, No. 3

293--300

EN

The paper discusses influence of the charging air parameters marine diesel engine on the emission toxic compounds in aspect of protecting the atmosphere against pollution from the sea vessels, pointed to the possibility of reducing NOx emissions by changing the parameters of charging air. In this group of activities undertaken to reduce nitric oxides emissions applied inter alia cooling the air and changes in pressure at the beginning of compression stroke. This is discussed in the background of normative acts, in particular the 73/78 MARPOL Convention (International Convention for the Prevention of Pollution from Ships) referring to prevention against marine environment pollution, and later amendments to the Convention with Annex VI (Regulation for the Prevention of Air Pollution from Ships) dealing with reducing the emission of nitric oxides and sulphur oxides into the atmosphere by sea vessels engines.It was also discussed the issue of air humidification as a method to reduce NOx by injecting hot water into a stream of pumped air. This is an overview on the example of two methods proposed for using in marine engines: CASS (Combustion Air Saturation System), HAM (Humid Air Motor system). The results of experimental tests of the influence of charging air pressure on content of exhaust gas, especially content nitric oxides (NOx), of ship diesel engine supplied with marine heavy fuel oil IF40 have been presented in this paper.

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Badania wpływu poziomu doładowania okrętowego silnika tłokowego na poziom emisji tlenków azotu

Witkowski K.

Silniki Spalinowe

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2011

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R. 50, nr 3

PL

W referacie omówiono problematykę ochrony atmosfery przed zanieczyszczeniami ze statków morskich na tle aktów normatywnych, w szczególności Konwencji MARPOL 73/78 (Międzynarodowa konwencja o zapobieganiu zanieczyszczeniom przez statki) odnoszącej się do przeciwdziałania zanieczyszczaniu środowiska morskiego z późniejszymi poprawkami, w tym aneksem VI dotyczącym redukcji emisji do atmosfery przez silniki okrętowe tlenków azotu i tlenków siarki. W referacie zaprezentowano wyniki badań eksperymentalnych wpływu zmian ciśnienia powietrza doładowującego na skład gazów spalinowych, w szczególności w odniesieniu do zawartości tlenków azotu (NOx), przez okrętowy silnik tłokowy spalający paliwo ciężkie IF40.

EN

The paper discusses the problems protecting the atmosphere against pollution from sea vessels in the background of normative acts, in particular the 73/78 MARPOL Convention (International Convention for the Prevention of Pollution from Ships) referring to prevention against marine environment pollution, and later amendments to the Convention with Annex VI (Regulation for the Prevention of Air Pollution from Ships) dealing with reducing the emission of nitric oxides and sulphur oxides into the atmosphere by sea vessels engines. The results of experimental tests of the influence of charging air pressure on content of exhaust gas, especially content nitric oxides (NOx), of ship diesel engine supplied with marine heavy fuel oil IF40 have been presented in the paper.

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Research on influence of change marine diesel engine of charging air parameters on its nitrogen oxides emission

Witkowski K.

Journal of KONES

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2010

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Vol. 17, No. 2

505-510

EN

The article presents the results of experimental tests of the influence of charging air pressure on content of exhaust gas, especially content nitric oxides (NOx), ofship diesel engine supplied with marine heavy fuel oil IF 40. Nitric oxides emissions for a given engine will depend on charging air parameters. Change of air parameters in this method of reducing NOX emissions involves cooling the air and changes in pressure at the beginning of compression stroke. The process of cooling the scavenging air means decreases the inlet air temperature and at the same time decreases the maximum cylinder temperature. Atmosphere protection against pollution on sea vessels covers one of the most important areas of human ecological activity which has its own history as well as some achievements. The most crucial ones include 73/78 MARPOL Convention (International Convention for the Prevention of Pollution from Ships) referring to prevention against marine environment pollution, and later amendments to the Convention with Annex VI (Regulation for the Prevention of Air Pollution from Ships) dealing with reducing the emission of nitric oxides and sulphur oxides into the atmosphere by sea vessels engines.