Temat: Diesel fuel - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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: 2.

Tytuł:: The effect of aviation fuel JP-8 and diesel fuel blends on engine performance and exhaust emissions
Autorzy:: Labeckas, G.
Slavinskas, S.
Vilutienė, V.
Powiązania:: https://bibliotekanauki.pl/articles/949492.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel engine
jet fuel
diesel fuel
autoignition
combustion
performance
exhaust emissions
Opis:: The article presents bench test results of a four-stroke, four-cylinder, naturally aspirated, DI diesel engine operating with neat JP-8 fuel (J) and its blends with Diesel fuel (D) in following proportions by volume: 90/10 (J+10D), 70/30 (J+D30), 50/ 50 (J+D50), 30/70 (J+D70), and 100% diesel fuel (DF). The purpose of the research was to analyse and compare changes occurred in the autoignition delay, combustion events, engine performance efficiency, emissions, and smoke of the exhaust when running on JP-8 fuel, jet-diesel fuel blends, and diesel fuel at a full (100%) engine load and speed of 1400 min–1 at which maximum torque occurs and rated speed of 2200 min–1. It was found that the start of injection (SOI) and the start of combustion (SOC) occurred earlier in an engine cycle and the autoignition delay decreased by 9.0% and 12.7% due to replacement of aviation JP-8 fuel with diesel fuel at a full load and the latter speeds. Maximum in-cylinder pressure was 6.8% and 4.0% higher when operating with diesel fuel, whereas brake thermal efficiency was 3.3% and 7.7% higher, and brake specific fuel consumption 2.8% and 7.0% lower when using fuel blend J+D50 compared with the respective values measured with neat JP-8 fuel. Emissions of nitric oxide (NO) and nitrogen oxides (NOx) were 13.3% and 13.1% higher from a straight diesel running at speed of 1400 min–1, and 19.0% and 19.5% higher at a higher speed of 2200 min–1. The carbon monoxide (CO) emissions and total unburned hydrocarbons (HC) decreased 2.1 times and by 12.3% when running with fuel blend J+D70 at speed of 2200 min–1 compared with those values measured with jet fuel. Smoke of the exhaust was 53.1% and 1.9% higher when using fuel blend J+D10 than that of 46.9% and 70.0% measured with jet fuel at speeds of 1400 and 2200 min–1. The engine produced 34.5% more smoke from combustion of fuel blend J+D70 at the low speed of 1400 min–1, but smoke converted to be 11.3% lower when operating at a higher speed of 2200 min–1.
Źródło:: Journal of KONES; 2015, 22, 2; 129-138
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Experimental testing of influence of commercial depressants on diesel fuels low temperature properties
Autorzy:: Baczewski, K.
Szczawiński, P.
Kamińska, M.
Powiązania:: https://bibliotekanauki.pl/articles/243000.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine fuels
diesel fuel
low temperature properties
depressants
Opis:: The types and action mechanism of depressant additions, which improves the properties of diesel fuels in low temperatures, were presented. The results of a sixteen different depressants influence on cloud point (CP) and cold filter plugging point (CFPP) of diesel fuels ONA without additions are given in following elaborate. The depressants were applied to samples of diesel fuel in concentration between 500 and 5000 ppm. The present paper shows correlation of diesel fuels ONA CFPP and ΔCFPP depression between depressants concentration. Only a part from the tested depressant additions has a significant impact on diesel fuel cloud filter plugging point at concentration recommended by their manufacturers. Moreover, some of the additions do not decrease the CFPP value. The depressants can be divided into three groups by their effectiveness: first, the ones which decreases greatly the CFPP (from 3 to 11 degrees) by adding only small amount of them (500 ppm), second, with almost no influence on CFPP values in smaller amounts (500 ppm) but reducing CFPP values in larger quantities (to 5000 ppm), third, with no influence on diesel fuels ONA CFPP even in large concentration. In conclusion, lowering the CFPP value depends on the kind of depressant and its concentration in diesel fuel and not on the diesel hydrocarbon composition with addition up to 7% of Fatty Acid Methyl Ester (FAME).
Źródło:: Journal of KONES; 2015, 22, 1; 7-14
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Analysis of research possibilities of fuel unit injectors
Autorzy:: Osipowicz, T.
Gołębiewski, W.
Powiązania:: https://bibliotekanauki.pl/articles/242820.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: unit injector
diesel fuel
engine diagnosing
injector operating parameters
Opis:: Article discusses issues concerning diagnosing and researching fuel unit injectors (UI). This fuel system has been taken off in automobiles but the problems with diagnosing and research is still actually. Motorized vehicles with fuel unit injector system were manufactured until 2010 but lorries are still producing. Only one automotive concern VW put in this system to motorized vehicles in Europe. The 1.9 TDI engines have PDE 1 (UI) and 1.4 TDI, 2.0 TDI engines have PDE 2 (UI). Unit injector is device which main tasks are spray and distribute fuel in combustion chamber of Diesel engine. Unit fuel injector is built with three sections: fuel injection nozzle complex, electromagnet unit and pump part. Injection nozzle complex is common mechanical one spring injector. That research is on check and eventually adjusts open pressure. Electromagnet units are non-dismantle and non-repair, but there is possibility dismantle and clean it. Electromagnet unit affects injection dosages and module BIP (being of injection period) unit fuel injection. The task of pump part is fuel damming until demanding values. The pump part makes up piston with and main body, spring and protect flat piece of metal. Theoretically, also this element is non-repair. Main unit fuel injector work parameters are injection dosages values and signal BIP. During fuel unit injectors research checks injection dosages with varies settings (rotation speed, injection time). These parameters are similar to engine work on idle speed (idle speed dosage), pilot dosage, middle and full load dosage.
Źródło:: Journal of KONES; 2016, 23, 3; 381-388
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Combustion of RME – diesel and NExBTL – diesel blends with hydrogen in the compression ignition engine
Autorzy:: Juknelevičius, R.
Szwaja, S.
Pyrc, M.
Gruca, M.
Pukalskas, S.
Powiązania:: https://bibliotekanauki.pl/articles/247823.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: hydrogen
RME
HVO
NExBTL
PRO Diesel
diesel fuel
CI engine
combustion
emission
Opis:: The article presents the test results of the single cylinder compression ignition engine with common rail injection system operating on biofuels and conventional diesel blends with hydrogen. Two types of liquid fuels were tested: blend of the 7% Rapeseed Methyl Ester (RME) with conventional diesel fuel and Neste Pro Diesel – blend of the 15% Hydrotreated Vegetable Oil (HVO), produced by Neste Oil Corporation with conventional diesel fuel. The purpose of this investigation was to examine the influence of the hydrogen addition to biofuels and diesel blends on combustion phases, autoignition delay, engine performance efficiency and exhaust emissions. Hydrogen fraction was changed within the range from 0 to 43% by energy. Hydrogen was injected into the intake manifold, where it created homogeneous mixture with air. Tests were performed at both fixed and optimal injection timings at low, medium, and nominal engine load. After analysis of the engine bench tests and simulation with AVL BOOST software, it was observed that increasing hydrogen fraction shortened the fuel ignition delay phase and it affected the main combustion phase. Moreover, decrease of carbon monoxide (CO), carbon dioxide (CO2) and smoke opacity was observed with increase of hydrogen amounts to the engine. However, increase of the nitrogen oxide (NOx) concentration in the engine exhaust gases was observed.
Źródło:: Journal of KONES; 2018, 25, 3; 261-274
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Optical investigations of alternative fuel combustion in common rail compression ignition engine
Autorzy:: Merola, S. S.
Tornatore, C.
Valentino, G.
Marchitto, L.
Powiązania:: https://bibliotekanauki.pl/articles/246752.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: optical diagnostics
alternative fuels
diesel fuel (DF)
common rail
compression ignition engine
Opis:: The increasing global energy demand and the decreasing fossil-energy resources are enhancing the interest in the combustion characteristics of alternative fuels for diesel engines. Alternative-fuel combustion has been studied in detail in light-duty diesel engines, even if the comparison of test results from different chemical nature fuels obtained by integrated optical methodologies is lacking. Thus, it is the primary objective of the present study to characterize the combustion of selected alternative fuels in an optical common rail compression ignition engine by high-speed luminescence imaging and natural emission spectroscopy. The effects of the fuels on in-cylinder spray combustion and soot formation were investigated through UV-visible digital imaging and natural emission spectroscopy. Experiments were performed in a single cylinder high swirl compression ignition engine. The test engine was optically accessible and equipped with a common rail multi-jets injection system. Several injection pressures and timings at two EGR rates were tested. Digital imaging allowed characterizing the evaporating spray and the combustion process. UV-visible emission spectroscopy was used to follow the evolution of the combustion process chemical markers. Chemiluminescence signal due to OH was identified. The soot spectral feature in the visible wavelength range was correlated to soot engine out emissions. Conventional and optical data related to diesel fuel blended with gasoline and butanol were compared.
Źródło:: Journal of KONES; 2012, 19, 3; 279-288
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Interaction testing of rapeseed methyl esters and their blends with diesel fuel on elastomers
Badania wzajemnego oddziaływania estrów metylowych oleju rzepakowego i ich mieszanin z olejem napędowym z elastomerami
Autorzy:: Baczewski, K.
Powiązania:: https://bibliotekanauki.pl/articles/243167.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: silniki spalinowe estry metylowe oleju rzepakowego (RME)
olej napędowy
elastomery
combustion engines
rapeseed methyl esters (RME)
diesel fuel
elastomers
Opis:: Several elastomers used as seals not compatibility with fatty acid methyl esters (FAME). The paper presents the results of laboratory investigations of five various elastomers (polyethylene rubber, fluorine rubber, butadiene-acrylonitryle rubber, epichlorodidrine rubber and commercial gasoline-resistant rubber) interaction of rapeseed methyl esters (RME) and their blends with diesel fuel. The test results showed that the elastomers made ofpolyethylene rubber and fluorine rubber are compatible with rapeseed methyl esters. The butadiene-acrylonitryle rubber, epichlorodidrine rubber and commercial gasoline-resistant rubber elastomers exhibited changes in physical properties: swelling in crease and hardness reduce in comparison with diesel fuel. Aged rapeseed methyl esters are more active to elastomers in comparison with fresh rapeseed methyl esters. The blends of rapeseed methyl esters with diesel fuel cause high changes of those elastomers volume, mass and hardness, already for blends contain 5% (by volume) of rapeseed methyl esters in comparison to diesel fuel.
Wiele elastomerów stosowanych na uszczelnienia jest mało odpornych na działanie estrów metylowych kwasów tłuszczowych (FAME). W referacie przedstawiono wyniki badań laboratoryjnych wzajemnego oddziaływania pięciu różnych elastomerów (z polietylenu, z kauczuku fluorowego, z kauczuku butadienowo-akrylonitrylowego, z kauczuku epichlorohydrynowego i handlowej gumy benzynoodpornej) z estrami metylowymi oleju rzepakowego (RME) i ich mieszaninami z olejem napędowym. Stwierdzono, że próbki elastomerów polietylenowych i z kauczuku fluorowego są odporne na działanie estrów metylowych oleju rzepakowego. Estry metylowe oleju rzepakowego powodują wzrost pęcznienia i spadek twardości elastomerów z kauczuku butadienowo-akrylonitrylowego, z kauczuku epichlorohydrynowego i z handlowej gumy benzynoodpornej. W porównaniu z olejem napędowym zestarzone estry metylowe oleju rzepakowego są bardziej aktywne w stosunku do elastomerów niż świeże estry metylowe oleju rzepakowego. Także mieszaniny estrów metylowych oleju rzepakowego z olejem napędowym powodują duże zmiany objętości, masy i twardości tych elastomerów, już przy zawartości 5% (objętościowo) estrów metylowych oleju rzepakowego w mieszaninie z olejem napędowym w porównaniu z olejem napędowym.
Źródło:: Journal of KONES; 2007, 14, 2; 19-25
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Description of diesel fuel based on synchronous fluorescence spectroscopy
Autorzy:: Baszanowska, E.
Otremba, Z.
Powiązania:: https://bibliotekanauki.pl/articles/242632.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: synchronous fluorescence spectroscopy
total synchronous spectra
diesel fuel
wavelength-interval
offset
fluorescencyjna spektroskopia synchroniczna
widmo synchroniczne
olej napędowy
długość fali
Opis:: The purpose of the study is spectrally characterise fuel Diesel used in diesel ship engine. For description of Diesel fuel the techniques of total synchronous fluorescence spectroscopy was applied. To characterise the oil, the spectrofluorometer ‘Aqualog Horiba’, which allows performing precise measurement in a short time, was applied to measure the excitation-emission spectra. Total synchronous fluorescence spectra of oil were obtained using various wavelength intervals basing on the measured excitation-emission spectra of Diesel fuel. Total synchronous spectra of Diesel oil are considered for several oil concentration. Synchronous fluorescence spectra were used to describe the detected maxima of Diesel fuel fluorescence by the wavelength-interval fluorescence maximum, containing information about the excitation wavelength and the wavelength-interval describing the characteristic fluorescence peak position for each considered fuel sample. That approach is discussed in relation to find a universal indicator – the wavelength-interval – as a possible tool proposed to Diesel fuel description independent from the fuel concentration. Therefore, we discuss the changes of the total synchronous fluorescence spectra for different oil concentration. Obtained results indicate that the best indicator for this kind of oil characterisation seems to be the wavelength-interval for 60 nm due to the independence of the synchronous spectra from the oil concentration.
Źródło:: Journal of KONES; 2017, 24, 1; 39-45
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: The influence of diesel engines thermal condition on fuel consumption and smoke of exhaust gases
Autorzy:: Pukalskas, S.
Pikunas, A.
Bureika, G.
Powiązania:: https://bibliotekanauki.pl/articles/245614.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel engines fuel consumption
engine's thermal condition
temperature of engine's cooling liquid
smoke in exhaust
Opis:: The number of vehicles in the world is growing rapidly. Therefore, the global consumption of crude oil is increasing and its natural resources are being depleted. It causes the rise of oil fuel cost. Constantly rising energy prices and emironmental concerns have made energy saving the highest priority for transportation operators. The main goal of vehicles' operation is economy. The fuel consumption of the most popular internal combustion engines depends on various factors, and one of the most important of them is thermal condition. Energy or fuel saving is the main way to reduce operational expenses of vehicles. This paper aims to investigate fuel consumption of 1.9 liter volume direct injection diesel engine and to construct a diagram of the dependence of the amount of smoke in exhaust on the temperature of engine's operation. The temperature was fixed in the engine's crankcase, while the temperature of cooling liquid was measured at four points as well as during the engine's bench testing. Unexpected test results are obtained: when the temperature of exhaust gases rises above 70-75 °C, the amount of smoke increases by a few times. Finally, basic conclusions and recommendations are given.
Źródło:: Journal of KONES; 2009, 16, 3; 319-324
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Comperative analysis of emision from engine fuelled with diesel and bio-diesel
Autorzy:: Koszałka, G.
Hunicz, J.
Kordos, P.
Powiązania:: https://bibliotekanauki.pl/articles/242081.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel engine
alternative fuel
bio-diesel
exhaust emissions
Opis:: The paper presents comparative analysis of operational parameters, smoke emission and toxic components contents in exhaust gases of a compression ignition engine fuelled with fossil diesel, commercial bio-diesel (fatty acid methyl ester) and their blend. Measurements were conducted on an older generation diesel engine equipped with in-line injection pump. Engine was operated in conditions of full load rotational speed characteristic and also ESC steady-state test cycle. Fourier Transform Infrared (FTIR) analytical system provided contents of 23 exhaust gas components. In particular chosen parameters of investigated fuels (on the base of quality reports), performance and fuel consumption characteristic versus rotational speed, smoke emission (D) and content of carbon monoxide (CO), unburned hydrocarbons (THC) and nitrogen oxides (NOx), sulphur dioxide (S02) and carbon dioxide (CO2) in exhaust gas of the engine fuelled with investigated fuels, emission of specific hydrocarbons of the engine fuelled with investigated fuels, of non-regulated compounds measured during the research, molar mass of analyzed exhaust compounds are presented in the paper.
Źródło:: Journal of KONES; 2009, 16, 3; 165-171
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Engine fuel characterisation through ultraviolet absorption spectra
Autorzy:: Baszanowska, E.
Otremba, Z.
Powiązania:: https://bibliotekanauki.pl/articles/245537.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuel
spectroscopy
absorptivity
diesel engine system
Opis:: In the article, light absorption properties of the fuel oil are considered with a view to create basis for establish optical indicator of the type and quality of this kind of crude oil derivative, in this case the Diesel fuel. The organic solvent – n-hexane – was chosen as a solvent to prepare samples of dilutions of Diesel fuel in several oil concentration. Spectrophotometer Aqualog Horiba were applied to record the absorbance spectra in the ultraviolet and visual range of the light (from 240 to 600 nm) for each previously prepared samples. Obtained results allow concluding that the changes of absorbance occur primarily in the wavelength range from 240 nm to 355 nm. Moreover, the absorbance spectra are characterized by the characteristic sharp peak located at 270 nm for excitation wavelength. Spectra of absorbance were converted to spectra of absorption coefficient based on Lambert-Beer law. Due to the independence the absorption coefficient from the fuel concentration, this parameter could be used as a potential indicator to access composition and quality Diesel fuel used in the diesel engine system. Therefore, preliminary tests allow concluding that absorption coefficient for selected wavelength located at 270 nm could be a sensitive indicator for quick access to fuel quality.
Źródło:: Journal of KONES; 2017, 24, 3; 15-19
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:: 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: 14.

Tytuł:: The possibility of use a waste product of biofuels production-glycerol as a fuel to the compression ignition engine
Autorzy:: Grab-Rogaliński, K.
Szwaja, S.
Powiązania:: https://bibliotekanauki.pl/articles/243807.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: glycerol
alternative fuel
diesel engine
combustion properties
Opis:: The article presents results of tests performed in a combustion research unit (CRU) with the two following fuels: light fuel oil (LFO) and glycerol. The CRU is a constant volume combustion chamber machine equipped with an injection system based on that used in common-rail diesel engines with electromagnetic injectors. This machine allows to compare various combustion properties between fuels for specified parameters of injection and a combustion chamber as well. As it is known glycerol is a substance which is obtained from several technological processes such as production of biofuel thus in this way it can be treated as an alternative renewable fuel. The glycerol is characterized by low heating value of 16MJ/kg and relatively high density of 1261 kg/m3. However, its heating value by volume is higher if compared to other liquid fuels. From that reason decrease in energy that can be delivered with fuel is smaller which is approximately 16% lest than for LFO. The parameters measured during this research were: pressure increase, rate of pressure increase (ROPR), ignition delay (ID), main reaction delay (MRD), main combustion period (MCP), end of main combustion (EMC), end of combustion (EC), position of max ROPR (PMR) and max ROPR. The tests were performed with different injection parameters such as injection pressure, injection duration and injection delay as well as under various conditions in the CRU combustion chamber expressed by pressure and temperature. On the basis of these tests the comparison between LFO and glycerol was done. The results were presented in diagrams. The research shows that glycerol used as a fuel, to obtain the same output power, should be injected at higher amounts. Glycerol as a fuel cannot ignite itself, hence to provide combustion the pilot injection of another fuel have to be applied.
Źródło:: Journal of KONES; 2016, 23, 3; 157-164
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Aging processes of biodiesel and biodiesel/diesel fuel blends
Autorzy:: Jankowski, A.
Baczewski, K.
Powiązania:: https://bibliotekanauki.pl/articles/246930.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel engines
biofuels
FAME
fuel aging
emissions
Opis:: There has been increasing interest in recent years in the use of biodiesel as a substitute for petroleum-based diesel fuel. Fatty acids methyl esters (FAME) in a pure form are applied as a biodiesel B100 or as blends with diesel fuels named as the B10 biodiesel, the B20 biodiesel etc. FAME is susceptible to oxidation and to changes of other essential parameters during aging processes, which have an essential influence the NOx emission. Change of biodiesel parameters results in deterioration of fuel working properties and in increase of the NOx emission level. The increased NOx emission level is accompanied with high viscosity. Experiments with the PDPA laser-equipment showed that high content of biodiesel in a fuel increases the Sauter Mean Diameter (D32) of a fuel spray. The Sauter Mean Diameter increases with time of the aging process of biodiesel, what additionally can unfavourably influence the level of emission of exhaust gases. The research results of samples of aging processes of Rapeseed Methyl Ester (RME) accomplishing requirements of the EN 14214 European Biodiesel Standard, diesel fuel accomplishing requirements of the EN 590 (for based diesel fuel and blends of based diesel fuel and RME containing 1%, 5%, and 20% RME) are presented in the paper. Determination of influence of the fuel properties and the aging process on the acid number, kinematic viscosity, cloud point, cold filter plugging point, and pour point of fuel samples was an aim of performed research, as well the aging RME effect on elastomers comparatively with fresh RME. The process of fuel samples aging was enforced by the daylight (sun) effect, air, the elevated temperature and water. Fuel samples were aged in laboratory conditions during 15 and 60 weeks. Then the changes of fuels properties with relation to the same properties in initial conditions were determined. The water presence intensifles the process of the RME aging, especially in longer contact. An essential novel aspect of the paper is a relation determined between changes of biodiesel properties during aging and the NOx emission level that is connected mostly with increased viscosity. Rise of viscosity increases size of droplets of spray ed fuel, which results in increased emission level. Prevention of viscosity changes is an efficient way of the NOx emission decrease.
Źródło:: Journal of KONES; 2010, 17, 2; 167-180
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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