Temat: exhaust gas content - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Research on influence of selected failures on the exhaust gas content of ship diesel engine working on heayy fuel oil
Autorzy:: Witkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/245333.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: laboratory tests
exhaust gas content
emission of nitric oxides
heavy fuel oils
Opis:: The article is devoted to problems connected with pollution of the atmosphere by ship engines. 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 Nitric oxides emissions from a given engine will depend on engine technical condition. Therefore it was to decided execute laboratory tests on influence of selected failures ship diesel engine, on its exhaust gas content, first of all on change nitric oxygen emission level. The article presents the results of experimental tests of the influence of charging air pressure, injection advance angle and injector opening pressure on content of exhaust gas, especially content nitric oxides (NOx), of ship diesel engine supplied with marine heavyfuel oil IF4.
Źródło:: Journal of KONES; 2009, 16, 4; 507-512
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Research on possible supplying ship diesel engines with alternative fuels
Autorzy:: Witkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/242027.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: tests
combustion
alternative fuel
fuel oils
rape oil methyl esters
exhaust gas content
Opis:: The paper presents introduction to the research on possible supplying ship diesel engines with mixtures of diesel oils and vegetable oils or their esters with accounting for ecological aspects - exhaust gas purity. Characteristics of vegetable oils and their esters are compared with those diesel oils. Consequences of their application to diesel engines, mainly for their working process and exhaust gas content, are indicated. Also, influence of combusting mixtures of diesel oil and vegetable oils or their esters, are discussed in the same context. The paper presents results of experimental tests which were carried out on a ship diesel engine supplied with marine diesel oil(MDO) and the oil and rape oil methyl esters mixed (MDO/RME) in different proportions (i.e. 5% RME in MDO, 10% RME in MDO and 20% RME in MDO). The results obtained from the tests when supplying the engine with the MDO alone was assumed the reference point for determination of influence of combustion of the MDO/RME mixtures on the engine's working parameters and its exhaust gas content. It was paid to influence of combustion of the mixtures of diesel oil and rape oil methyl esters on working parameters of the engine, including noxious components capacity.
Źródło:: Journal of KONES; 2011, 18, 2; 493-498
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Research on influence of change marine diesel engine of charging air parameters on its nitrogen oxides emission
Autorzy:: Witkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/247498.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: laboratory tests
supercharging air pressure
exhaust gas content
emission of nitric oxides
heavy fuel oils
Opis:: 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.
Źródło:: Journal of KONES; 2010, 17, 2; 505-510
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The issue of the atmosphere protection against toxic compounds gas emissions in maritime transport
Autorzy:: Witkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/242376.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: laboratory tests
supercharging air pressure
exhaust gas content
emission of nitric oxides
vessels propulsions
diesel engines
air humidification
Miller systems
Opis:: 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.
Źródło:: Journal of KONES; 2014, 21, 3; 293-300
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Influence of the exhaust gas recirculation on the oxygen contents and its excess ratio in the engine combustion chamber
Autorzy:: Postrzednik, S.
Żmudka, Z.
Przybyła, G.
Powiązania:: https://bibliotekanauki.pl/articles/245080.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: exhaust gas recirculation (EGR)
oxygen content
stoichiometric conditions
oxygen excess
Opis:: Exhaust gas recirculation (EGR) can be realized on the external or internal way. The main goal of EGR is to decrease the combustion temperature of the combustible mixture by increasing the relative heat capacity of the working medium. An additional effect is to reduce the oxygen content in the gas mixture flowing into the combustion chamber. To quantify the exhaust gas recirculation some descriptive parameters are defined, including: – exhaust gas recirculation rate R, – multiple of exhaust gas recirculation K, – relative exhaust gas recirculation W. The analysis concerns the effective oxygen excess ratio Oef in the combustible mixture and the so-called internal oxygen excess ratio Ow,, which additionally takes into account the supplied oxygen with the recirculation stream. It was found that with increasing of the exhaust gas recirculation degree systematically decreases the content of the oxygen [O2]d in the combustible mixture, while increases the oxygen excess ratio Oef observed in the exhaust gases. Changes of this all parameters influence the combustion coditions in the engine cylinder, and next the achieved specifaic work, energy efficiency and emission of the combustion engine. An advanced system with independent, early exhaust valve closing enables realization of an internal EGR. Effectiveness of internal recirculation is lower than the external recirculation.
Źródło:: Journal of KONES; 2013, 20, 3; 315-321
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Stechiometryczne uwarunkowania oraz skutki realizacji recyrkulacji spalin
Stoichiometric conditions and effects of the exhaust gas recirculation
Autorzy:: Postrzednik, S.
Żmudka, Z.
Przybyła, G.
Powiązania:: https://bibliotekanauki.pl/articles/134065.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: silnik spalinowy
recyrkulacja spalin
stosunek tlenu
uwarunkowania stechiometryczne
combustion engine
exhaust gas recirculation (EGR)
oxygen content
excess
stoichiometric conditions
Opis:: Zasadniczym celem stosowania recyrkulacji spalin jest obniżenie temperatury spalania mieszanki palnej, poprzez wzrost względnej pojemności cieplnej czynnika roboczego. Do ilościowego ujęcia recyrkulacji wykorzystano pojęcia: stopień R, krotność K recyrkulacji spalin oraz jej wartość względna W. Analiza dotyczy stechiometrycznych skutków recyrkulacji: udziału tlenu [O₂]_d w mieszaninie gazów dopływających do komory spalania, efektywnego λ _ef stosunku nadmiaru tlenu oraz tzw. wewnętrznego stosunku nadmiaru tlenu λ_w, w którym uwzględnia się tlen dostarczany ze strumieniem recyrkulujących spalin. Dzięki przeprowadzonej analizie uwarunkowań i skutków recyrkulacji okazało się, ze wzrostem stopnia recyrkulacji systematycznie zmniejsza się udział [O₂]_d tlenu w mieszance palnej, a jednocześnie obserwuje się wzrost wewnętrznego stosunku nadmiaru tlenu λ _w. Ustalone współzależności wpływają istotnie na parametry (ciśnienie p, temperaturę T) obiegu silnika, pozyskiwaną pracę mechaniczną oraz sprawność energetyczną, a także na emisję substancji szkodliwych.
The main goal of EGR is to decrease the combustion temperature of the combustible mixture by increasing the relative heat capacity of the working medium. An additional effect is to reduce the oxygen content in the gas mixture flowing into the combustion chamber. The analysis concerns the effective oxygen excess ratio λ _ef in the combustible mixture and the so-called internal oxygen excess ratio λ_w, which additionally takes into account the supplied oxygen with the recirculation stream. It was found that with increasing of the exhaust gas recirculation degree systematically decreases the content of the oxygen [O₂]_d in the combustible mixture, while increases the oxygen excess ratio λ _ef observed in the exhaust gases. Changes of this all parameters influence the achieved specifaic work, energy efficiency and emission of the combustion engine.
Źródło:: Combustion Engines; 2013, 52, 3; 379-382
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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