Temat: diesel emission - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Utrata aktywności powierzchniowej składników surfaktantu płucnego po kontakcie z modelowymi cząstkami spalin silników Diesla
Loss of surface activity of lung surfactant compounds exposed to model diesel exhaust particles
Autorzy:: Sosnowski, T. R.
Gradoń, L.
Kramek-Romanowska, K.
Powiązania:: https://bibliotekanauki.pl/articles/2070722.pdf
Data publikacji:: 2009
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: diesel
emisja
inhalacja
nanocząstki
toksyczność
diesel emission
inhalation
nanoparticles
health effects
Opis:: Badano dynamiczne napięcie powierzchniowe w układach ciekłych zawierających składniki surfaktantu płucnego (SP) oraz nanometryczne cząstki węgla modelujące stałe produkty spalania w silnikach Diesla. Wykazano, że dynamika adsorpcji SP oraz zdolność do obniżania napięcia powierzchniowego została zaburzona w obecności nanocząstek, co może mieć związek z mechanizmem toksyczności inhalowanych spalin silnika Diesla.
Dynamic surface tension was measured in liquid systems containing lung surfactant (LS) compounds and nano-sized carbon particles used as a model of diesel exhaust particles (DEP). It was shown that both adsorption dynamics of LS components and their ability of surface tension reduction were disturbed in the presence of DEP. The results were discussed in relation to mechanisms of lung toxicity caused by inhalation of diesel exhaust.
Źródło:: Inżynieria i Aparatura Chemiczna; 2009, 5; 99-100
0368-0827
Pojawia się w:: Inżynieria i Aparatura Chemiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Combined DPF+SCR systems for retrofitting in the VERT quality verification tests
Autorzy:: Czerwinski, J.
Zimmerli, Y.
Mayer, A.
Bunge, R.
Heeb, N.
Lemaire, J.
Jauss, F.
Powiązania:: https://bibliotekanauki.pl/articles/248088.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel emission reduction
diesel particle filter
SCR
limited and unlimited emissions
deNOx
Opis:: New Diesel exhaust gas aftertreatment systems, with DPF*) and deNOx (mostly SCR) inline application are very important step towards zero emission Diesel fleet. Solid quality standards of those quite complex systems are urgently necessary to enable decisions by several authorities. The Swiss Federal Office of the Environment BAFU and the Swiss Federal Roads Office ASTRA decided to support further activities of VERT to develop appropriate testing procedures and to define the quality criteria. The present report informs about the international network project VERT *) dePN (de-activation, de-contamination, disposal of particles & NOx), which was started in Nov. 2006 with the objective to introduce the SCR-, or (DPF+SCR)-systems in the VERT verification procedure. Examples of results with some investigated systems are given. The most important statements are: - the investigated combined aftertreatment systems (DPF+SCR) for dynamic engine application efficiently reduce the target emissions with deNOx-efficiency up to 92% (if operated in the right temperature window) and filtration efficiency based on particle count up to 100%, - the average NOx conversion rate at transient operation (ETC) depends strongly on the exhaust gas temperature profile and the resulting urea dosing control, - the NP filtration efficiency, which is verified at stationary engine operation is perfectly valid also at the transient operation. The present results will be confirmed in the further project activities with other systems and with different testing cycles. A special attention will be paid to the operational profiles, which are representative for low emissions zones LEZ.
Źródło:: Journal of KONES; 2008, 15, 3; 89-101
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Evaluation of Ecological Efficiency Resulting From the Application of Modern Buses In Urban Communications
Autorzy:: Marczak, H.
Powiązania:: https://bibliotekanauki.pl/articles/124478.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: ecological effect
public transport
low-emission diesel bus
electric bus
costs of energy consumption
Opis:: The use of modern vehicles may contribute to limiting the adverse impact of urban transport on the environment. Evaluation of the options for choosing new means of transport in terms of economic and ecological benefits allows for the identification of the most advantageous variants. The solution is to consider replacing a bus compliant with a Euro III norm (base variant) with a one compliant with Euro VI (option 1) or with an electric counterpart (option 2). The evaluation of the solutions was based on the calculated parameters: a monetary value reflecting the energy cost of the analyzed buses and the ecological effect of the reduced emissions from the Euro VI bus or the electric bus compared with the Euro III vehicle. The ecological effect resulting from the use of the electric bus was determined taking into account the emissions from fossil fuels (coal, natural gas) and biomass. The method of cost analysis was used to evaluate the solution of replacing older buses with new ones (with different types of propulsion). It is based on calculating the unit cost of achieving the ecological effect of the solution.
Źródło:: Journal of Ecological Engineering; 2017, 18, 5; 110-117
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Zanieczyszczenie powietrza spalinami przy drążeniu wyrobisk z wykorzystaniem maszyn z silnikami Diesla
Air pollution by diesel exhaust during drifting headings with diesel-powered vehicles
Autorzy:: Szlązak, N.
Borowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/350114.pdf
Data publikacji:: 2005
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: emisja spalin z silników Diesla
zagrożenie spalinami
zanieczyszczenie powietrza w wyrobiskach podziemnych
diesel exhaust emission
harmfulness of diesel exhaust
air pollution in underground excavations
Opis:: W artykule przedstawiono sposoby wentylacji drążonych wyrobisk, w których pracują maszyny samojezdne z wysokoprężnymi silnikami spalinowymi. Scharakteryzowano czynniki wpływające na wielkość emisji spalin oraz omówiono szkodliwe oddziaływanie stałych i gazowych składników spalin. W celu oceny zanieczyszczenia atmosfery wyrobisk stałymi i gazowymi składnikami spalin silników Diesla podczas pracy maszyn samojezdnych wykonano pomiary zawartości części stałych i składników gazowych w powietrzu. Wyniki zostały opracowane statystycznie. Określono warunki przewietrzania, dla których będą zachowane dopuszczalne stężenia z uwagi na zanieczyszczenia stałymi i gazowymi składnikami spalin.
The ventilation methods of drifted headings where diesel-powered vehicles work were presented in the paper. The factors influencing exhaust emission are characterized and harmfulness of both exhaust components: particles and gases is discussed. In order to determine air pollution by diesel particles and gases of both particles and gases were taken. The results statistically analyzed. The ventilation conditions for preserving permissible diesel gases and particle concentration content.
Źródło:: Górnictwo i Geoinżynieria; 2005, 29, 3/1; 419-431
1732-6702
Pojawia się w:: Górnictwo i Geoinżynieria
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: A comparative assessment of operating characteristics of a diesel engine using 20% proportion of different biodiesel diesel blend
Autorzy:: Ramalingam, Senthil
Rajendran, Silambarasan
Ganesan, Pranesh
Powiązania:: https://bibliotekanauki.pl/articles/243735.pdf
Data publikacji:: 2019
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: biodiesel diesel blend
performance
emission
diesel engine
Opis:: The objective of the present work is to find out the viable substitute fuel for diesel and control of pollutants from compression ignition engines. Therefore, in this present investigation an attempt has been made to study the effect of 20% proportion of five different biodiesel diesel blend in diesel engine. The 20% proportion of biodiesel such as Jatropha, Pongamia, Mahua, Annona and Nerium and 80% of diesel and it is denoted as J20, P20, M20, A20 and N20 are used in the present investigation. The experimental results showed that the brake thermal efficiency of the different biodiesel blend is slightly lower when compared to neat diesel fuel. However, N20 blend, have shown improvement in performance and reduction in exhaust emissions than that of other biodiesel diesel blends. From, the experimental work, it is found that biodiesel can be used up to 20% and 80% of diesel engine without any major modification. The conducted experiments were conducted on a four cylinder four stroke DI and turbo charged diesel engine using biodiesel blends of waste oil, rapeseed oil, and corn oil with normal diesel. The peak cylinder pressure of the engine running with bio diesel was slightly higher than that of diesel. The experiments were conducted on a four cylinder four stroke diesel engine using bio diesel made from corn oil.
Źródło:: Journal of KONES; 2019, 26, 1; 127-140
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Self-regeneration method of diesel particulate filter
Autorzy:: Mitianiec, W.
Powiązania:: https://bibliotekanauki.pl/articles/950135.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel engines
exhaust emission
DPF
Opis:: Compression ignition engines have no possibility for self-regeneration of DPF and regeneration requires additional energy for soot combustion (additional fuel or electric energy) after some period of the engine work as a result of closing of substrate pores by soot. The innovation method takes into account a self-regeneration of diesel particle filter by use of special heat recovery system. The paper shows one of possible design of DPF self-regeneration. The exhaust temperature behind the turbine and catalytic converter is very low and for an increasing of gas temperature before DPF, the heat from soot combustion can be used. The preliminary studies show a possibility of using the special design of DPF with heat recovery system. The paper presents results obtained from simulations based on one-dimensional model of such system and analysis of increasing the heat recovery ratio by change of geometry of DPF. The gas heat exchange formulas between DPF and the heat exchange model are partly included in the paper. The preliminary results of calculations show the possibility of increase of exhaust gases in front of DPF about 20%, which enables a continuous regeneration of DPF. Heat recovery ratio is depends on soot combustion rate on the wall of DPF monolith. The method enables to recover some part of energy which is lost in the conventional DPF. The paper is a part of further work in European project FP6 IPSY.
Źródło:: Journal of KONES; 2010, 17, 1; 273-281
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: The influence of fuel aromatics on diesel exhaust emission
Autorzy:: Glugorijevic, R.
Jevtic, J.
Borak, D.
Powiązania:: https://bibliotekanauki.pl/articles/243189.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel fuel
aromatics
exhaust emission
Opis:: Current and future air quality is a worldwide concern, which has resulted in both a continuous tightening of emissions legislation for vehicles and a parallel tightening of fuel specifications. The automotive and oil industry across the globe especially in EU, USA and Japan have in each case made considerable efforts to understand the relationship between vehicle emissions, urban air quality, engine technologies and fuels, and to meet the more and more stringent legislation. The supply of automotive fuels today is based almost entirely on petroleum.The quality requirements of diesel fuels become more and more stricter and it will continue in the next decades, because the clean engines need clean fuels. Therefore, fuels of low emission become significant factor in reducing toxic emission which pollutes the environment. With the introduce of low sulfur diesel fuel, the effect of sulfur become less significant. Other fuel properties such as aromatics content i.e. composition thus becomes more important. From this aspect it is investigated the affect of simultaneous addition of mono+-, di+ - and tri+-aromatics into low-sulfur diesel fuel. Obtained results show that aromatics composition has the effect on diesel exhaust emission.
Źródło:: Journal of KONES; 2007, 14, 2; 161-170
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Combustion and emissions investigation on low-speed two-stroke marine diesel engine with low sulfur diesel fuel
Autorzy:: Yang, Zhiyuan
Tan, Qinming
Geng, Peng
Powiązania:: https://bibliotekanauki.pl/articles/259117.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: NOx emission
CO2 emission
marine diesel engine
combustion
marine low sulfur diesel fuel
Opis:: With the implementation and expansion of international sulfur emission control areas, effectively promoted the marine low sulfur diesel fuel (MLSDF) used in marine diesel engines. In this study, a large low-speed, two-stroke, cross-head, common rail, electronic fuel injection marine diesel engine (B&W 6S35ME-B9) was used for the study. According to diesel engine’s propulsion characteristics, experiments were launched respectively at 25%, 50%, 75%, 100% load working conditions with marine low sulfur diesel fuel to analyze the fuel consumption, combustion characteristics and emissions (NOx, CO2 , CO, HC) characteristics. The results showed that: Marine diesel engine usually took fuel injection after top dead center to ensure their safety control NOx emission. From 25% to 75% load working condition, engine’s combustion timing gradually moved forward and the inflection points of pressure curve after top dead center also followed forward. While it is necessary to control pressure and reduce NOx emission by delaying fuel injection timing at 100% load. Engine’s in-cylinder pressure, temperature, and cumulative heat release were increased with load increasing. Engine’s CO2 and HC emissions were significantly reduced from 25% to 75% load, while they were increased slightly at 100% load. Moreover, the fuel consumption rate had a similar variation and the lowest was only 178 g/kW·h at 75% load of the test engine with MLSDF. HC or CO emissions at four tests’ working conditions were below 1.23 g/kW·h and the maximum difference was 0.2 or 0.4 g/kW·h respectively, which meant that combustion efficiency of the test engine with MLSDF is good. Although the proportion of NOx in exhaust gas increased with engine’s load increasing, but NOx emissions were always between 12.5 and 13.0 g/kW·h, which was less than 14.4 g/kW·h. Thus, the test engine had good emissions performance with MLSDF, which could meet current emission requirements of the International Maritime Organization.
Źródło:: Polish Maritime Research; 2019, 1; 153-161
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Real road tests - exhaust emission results from passenger cars
Autorzy:: Merkisz, J.
Powiązania:: https://bibliotekanauki.pl/articles/245491.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: exhaust emission
road tests
Diesel engines
diesel particulate filters
Opis:: The paper presents the results of on-road exhaust emission tests of passenger car fitted with diesel engine, and a DPF (diesel particulate filter). Under such conditions the author could determine the actual vehicle emissions. The tests were performed on a road portion of a fifty kilometres or so - these tests provide information on the on-road emissions and are a basis for their ecological evaluation. For the measurement of the exhaust emissions the authors used a portable exhaust emissions analyzer SEMTECH DS by Sensors Inc. The analyzer measured the concentration of the exhaust components at the same time measuring the exhaust mass flow. The measurements of the particulate matter (mass) were done with the use of particle analyzer by AVL. The obtained data were used to calculate the relations that characterize the influence of the dynamic engine parameters on the exhaust emissions. These properties were taken into account indirectly using the whole range of speeds and accelerations of the vehicle (engine speeds and loads of the engine) for the preparation of the matrices of the emissions rate. The used data were averaged within individual speed and acceleration ranges thus obtaining the characteristics of the share of operation in individual ranges and the characteristics of the emission matrices of the individual emission components. The above results served for defining of the emission level indicator of the vehicles that can be used for classification of vehicle fleet in terms of their emission level.
Źródło:: Journal of KONES; 2011, 18, 3; 253-260
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: An application of butanol as a diesel fuel component and its influence on exhaust emissions
Autorzy:: Kozak, M.
Powiązania:: https://bibliotekanauki.pl/articles/792035.pdf
Data publikacji:: 2011
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: diesel engine
exhaust emission
diesel fuel
n-butanol
smoke emission
oxygenation
nitric oxide
carbon oxide
Opis:: The influence of oxygenated diesel fuel containing n-butanol on a passenger car exhaust emissions was tested over the NEDC transient cycle. The tests showed that a diesel fuel/butanol blend, containing 10% of n-butanol, caused a significant decrease in PM and smoke emissions, had no effect on NOx and CO2 emissions and brought about higher CO and HC emissions. The most favourable fact resulting from the butanol application as diesel fuel component is that it produces desirable changes in PM/NOx trade-off.
Źródło:: Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11C
1641-7739
Pojawia się w:: Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Procedures and treatments leading to reduction of toxic components emission in diesel engines exhaust gas
Autorzy:: Kalina, P.
Irzycki, A.
Snopkiewicz, K.
Powiązania:: https://bibliotekanauki.pl/articles/248119.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel engine
pollution
reduction of emission
Opis:: The fight against global warming and Earth atmosphere pollution has been for years one of the most important tasks of governments and national economies of the European Union members. Abandonment of efforts leading to reduction mainly of carbon dioxide emission by heavy industry, electric power generation based on coal, passenger aviation and wheeled passenger transport will inevitably be leading to deterioration of health condition of our citizens. This article presents an overview of commonly used structural and technological treatments which have impact on reduction of toxic standardized exhaust pollutants in the surface transport, exemplified on SW 400 engine version of L2 / 3 and its turbocharged version 6CT 107 2/L2. The impact of: engine's adjustment parameters, catalytic afterburners, exhaust gas recirculation, modifications of injectors, turbochargers, supercharging air-cooling and particulates filter on carbon monoxide, hydrocarbons, nitrogen oxides and particulates emission was thoroughly examined. The parameters being compared were the results of toxicity tests according to ECE-R49 Regulation and a maximal smoke values on full-load characteristics. In conclusion, of the paper the limiting allowable values of toxic components emitted in Diesel engines exhaust gases in the following EU Emission Standards are presented.
Źródło:: Journal of KONES; 2012, 19, 1; 163-169
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Engine fuel characterisation based on excitation-emission spectra
Autorzy:: Baszanowska, E.
Otremba, Z.
Powiązania:: https://bibliotekanauki.pl/articles/246580.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuel
diesel
engine
excitation-emission spectra
fluorescence
Opis:: Considering that correctly functioning of diesel ship engine depends on the composition of applied fuel, it is necessary to easy characterise fuels in terms of quality. Therefore taking into account above mentioned, appropriate analyses have been undertaken and the intention of this article is to inform that characterisation of fuel used in marine transport can be described by the specific parameter based on fluorescence excitation-emission spectroscopy. Therefore, for this study fuel typically used in ship engine – Diesel fuel – is considered. For analysis, Diesel fuel dissolved in n-hexane was used and several oil samples for various oil concentration were prepared. Spectrofluorometer Aqualog Horiba was used to record the excitation-emission spectra (EEMs). EEM spectra determined for each of oil concentration were described by two specific peaks for this kind of oil. Based on registered EEMs, the specific indicator - the wavelength-independent fluorescence maximum – coded in two specific wavelengths – excitation and emission, respectively, described as Exmax/Emmax was determined for considered oil concentration. Obtained results indicate the independence from oil concentration only for one detected peak described by Exmax/Emmax = 240/332. Taking into account obtained results, we can conclude that the wavelength-independent fluorescence maximum detected for excitation wavelength at 240 nm corresponds to the emission wavelength at 332 nm due to the independence from the oil concentration, could be a good indicator to characterise this kind of oil – Diesel fuel. We can conclude that the changes in the composition of fuel could be detected in EEM spectra by the change of detected peaks position.
Źródło:: Journal of KONES; 2017, 24, 2; 25-30
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Butanol/biobutanol as a component of an aviation and diesel fuel
Autorzy:: Dzięgielewski, W.
Gawron, W.
Kaźmierczak, U.
Kulczycki, A.
Powiązania:: https://bibliotekanauki.pl/articles/247384.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aviation
diesel fuels
biocomponents
CO2 emission
Opis:: This paper describes the analysis and conclusions regarding the use of butanol/biobutanol as a component of conventional mineral fuels employed in different areas of transportation. Butanol from biomass - biobutanol is interesting as biocomponent of gasoline, diesel fuel as well as aviation fuels. This is especially important in case of air transport, which is the carbon dioxide emission source of the fastest growth. Biobutanol is tested as biocomponent of gasoline, including aviation ones, but there are no information about biobutanol added to mineral Jet fuel as well as diesel fuel. Direction of research conducted by leading aviation companies indicates that hydrocarbon biocomponent will be main biofuel used as aviation turbine fuel. One of reported technology is focused on use of butane-1-ol as semi-finished products for isoparaffinic hydrocarbons generation that then would be used for aviation turbine fuels production. In order to do such analysis the preliminary lab testing of blends of butanol isomers with aviation fuel Jet A-1 and diesel fuel were performed. The paper contains the results of standard tests for blends of mineral fuels with butane-1-ol and butane-2-ol added in concentration of 0-20 %(V/V). Both the advantages and disadvantages regarding the use of such component of mineral fuels are presented. Butanol decreases value of flash point and significantly influence on conductivity of Jet fuel. In case of aviation fuel for turbine engines, and diesel fuel, the restrictions regarding direct use of butanol are important. However, butanol can be treated as semi-finished material for synthesizing of biohydrocarbons used in above applications.
Źródło:: Journal of KONES; 2014, 21, 2; 69-75
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: The effect of methanol-diesel combustion on performance and emissions of a direct injection diesel engine
Autorzy:: Tutak, W.
Szwaja, S.
Powiązania:: https://bibliotekanauki.pl/articles/241919.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: dual-fuel engine
exhaust emission
modelling
diesel
Opis:: The results of CFD modelling a dual fuel diesel engine powered with both methanol and diesel fuel is presented in the paper. Modelling was performed with 20 and a 50% energetic share of methanol in the entire dose. The analysis was conducted on both the thermodynamic parameters and exhaust toxicity of dual fuel engine. It was found that the various share of methanol influences the ignition delay of the combustion process and after start of main phase of combustion, the process occurs faster than in case of the diesel engine. It was found that the time of 10-90% burn of the fuel is much shorter than it is in the diesel engine. The dual fuel engine was characterized by higher indicated mean pressure in the whole range of diesel fuel injection timings. While analysing toxic exhaust emission from the dual fuel engine powered with methanol, it was found that the rate of NO formation was significantly higher than from the diesel engine. The combustion process in the dual fuel engine occurs more rapidly than in the conventional diesel engine, which contributes to form areas with high temperature, and in combination with presence of oxygen from the air and oxygen bonded in the methanol, promotes the NO formation. In the case of the dual fuel engine, it was found that soot emission was reduced. The engine running with diesel injection start at 8.5 deg before TDC, the soot emissions were more than twice lower in the dual fuel engine, while the emission of NO was much higher.
Źródło:: Journal of KONES; 2015, 22, 2; 259-266
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: The total NOx emission control possibility in modern large bore, slow speed marine engines
Autorzy:: Borkowski, T.
Powiązania:: https://bibliotekanauki.pl/articles/246219.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine diesel engine
injection assembly
exhaust emission
Opis:: The common demands for environmental protection in shipping are being recognized by IMO, through development of the rules with respect to SOx and NOx. This paper investigates the results of fuel injection variables, affecting cylinder process performance and exhaust gas emission. The effect of injection assembly design attributed on NO emission was estimated. The similar slow speed, large bore MAN B&W engines performance were compared. The main factors used for evaluation were: fuel consumption, rotational speed, mean and maximum in-cylinder pressures and total concentrations of NOx, CO2, O2i CO, and HC. The engines performance and NO emission were compared with conventional 6S60MC-C and latest — electronically controlled 7S60ME-C. The CFD simulation of combustion and pollutant formation was created to represent processes of a marine large bore engine. The SMC-C engine operation and standard injection nozzle design was taken as a baseline for comparison with measured NO concentration. The predicted cylinder pressures showed reasonable agreement with experimental measurements. The predictive ability of used CFD simulation package was found to be quantitatively insufficient in terms of NOx emission. However, the predicted NO emission exhibits similar sensitivity with experiment results. The quantitative set of reference data for the validation of simulation results needs to be substantially improved. The determination offuel injection and cylinder pressure history can be identified as the most important source of inaccuracy. Finally, weighted NOx specific emission factor for both engines shows close value, sufficiently placed against IMO limit presented in Fig. 11. The results are promising and show that controlled combustion process is capable of fulfilling present and future NOx emission requirements. Modern marine engines are designed with adjustable components to allow the engine to be adjusted for maximum efficiency or NOx weighted emission factor when used in particular application.
Źródło:: Journal of KONES; 2008, 15, 2; 21-28
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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