Wszystkie pola: fame - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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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Skocz do pozycji: 2.

Tytuł:: Influence of diesel engine fuelling with faee and FAME on stream spray and ignition delay angels
Autorzy:: Kruczyński, S. W.
Orliński, P.
Orliński, S.
Powiązania:: https://bibliotekanauki.pl/articles/245807.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine diagnostics
ecological fuels and environment
Opis:: The paper presents results of examinations concerning stream spray and ignition delay angles of AD3.152 engine fuelled with mineral fuel Ekodiesel Plus 50B and comparatively fuelled with vegetable fuels like methyl ester FAME and ethyl ester FAEE. Using fuels of different physicochemical properties to diesel engines requires high accuracy of diagnostic parameters measurements in order to learn differences in processes of injection and combustion. Necessity of fulfilling more and more strong standards, concerning emission of toxic components of exhaust gases, forces users of diesel engines to posses quick and precision methods of their technical state assessment and particularly of a combustion process and of injection equipment technical state. Analysis of the obtained diagrams of fuel pressure in the injection pipe enables to determine fuel pressure increase rate. The investigations were carried out on the basis of speed external characteristic using test stand equipped with system of quick-changeable pressures measurements. Stream spray of fuel and ignition delay angles influence combustion process what is connected with emission of toxic components to environment. However, decay period time tested fuels and their limits appeared smaller for vegetable fuels. Considering the results, it is therefore decide to continue our experiments.
Źródło:: Journal of KONES; 2008, 15, 3; 253-258
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The influence of RME on mass and number concentration of nano PM in exhaust gases from a diesel engine
Autorzy:: Cisek, J.
Powiązania:: https://bibliotekanauki.pl/articles/244532.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: nanoparticles
mass
number concentration
FAME
RME
diesel engine
Opis:: Transport is a major source of the particle pollution (PM). Combustion engine particulate emissions have the potential cause adverse health effects. These effects include cancer and other pulmonary and cardiovascular diseases. A substantial proportion of the number of particles, but not the mass, is ultrafine. For example – one million particles of 100 nanometers size with a unit density of 1 g/cm3 have a mass of approximately 0.0005 g. The paper includes research results of mass and number concentration of nanoPM for 1.9 TDI VW exhaust gases fuelled by standard diesel. The measurements were performed for ambient air and 3 different point of engine work (idle speed, low and high load at 2000 rpm). For nanoPM measurements was used Electrical Low Pressure Impactor ELPI from DECATI, was found, among other things, that the biggest mass concentration was at 0.1-10 μm of PM diameter but the biggest number concentration was at 0,01 – 0,1 μm and thus for the size of solid particles of at least an order of magnitude smaller than the mass concentration. The biggest the negative differences in the mass concentration occur in the exhaust gases of the RME fuelled engine (in comparison with diesel fuel) at engine idling when the smallest injection pressure and temperature inside the engine cylinder exist and the oxygen availability is also the lowest (because of the small charging pressure and high EGR rate). Such measurements are important not only in terms of utilitarian but also in cognitive sense – for determining the effect of the engine construction parameters and/or regulating the engine (or the fuel composition) on the mass and the number of nanoparticles emitted in the exhaust gases.
Źródło:: Journal of KONES; 2014, 21, 2; 53-60
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Comparison of indicator and heat release graphs for vw 1.9 tdi engine supplied diesel fuel and rapeseed methyl esters (RME)
Autorzy:: Cisek, J.
Powiązania:: https://bibliotekanauki.pl/articles/247568.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: RME
FAME
indicator diagrams
heat realise
diesel engine
Opis:: The results of investigation of 1,9 TDI engine (285 Nm, 85 kW, type AJM without any modification) equipped with injection units supplied conventional diesel fuel (ON) or B100 fuel (RME) have been presented in article. Investigations have been realized at the engine speed of 2000 rpm and variable load within the range of 0 to 275 Nm. The pressure, temperature and heat release velocity runs have been subjected to analysis. Particular attention has been paid to the release of the heat used for the effective work and internal energy increase of the working medium (enthalpy) during combustion inside the engine cylinder versus the crank angle for both investigated fuels. It was found among the others that mentioned fuels differ in the heat release, heat velocity and the maximal combustion temperature, which for the B100 fuel is bigger than for the conventional diesel fuel. Bigger combustion dynamics of tested biofuel (compared with standard diesel fuel) results higher concentrations of Nitrogen Oxides NOx in exhaust gases. The easiest way is of course the use of the later start of fuel injection biofuels and/or increase the exhaust gas recirculation EGR. These treatments, however, result in a worsening of the energy performance of the engine. It was concluded also that the combustion of RME works properly at higher engine loads. Then reduce the negative difference between the combustion of biofuel (RME) and standard Diesel fuel.
Źródło:: Journal of KONES; 2013, 20, 4; 71-78
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Analysis of nitrogen oxides emission in self-ignition engine fuelled with diesel oil plant fuel and their blends
Analiza emisji tlenków azotu silnika o zapłonie samoczynnym zasilanego olejem napędowym, paliwem roślinnym i ich mieszaninami
Autorzy:: Ambrozik, A.
Kurczyński, D.
Powiązania:: https://bibliotekanauki.pl/articles/243140.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: silniki spalinowe o zapłonie samoczynnym
estry metylowe kwasów tłuszczowych oleju rzepakowego FAME
olej napędowy
badania eksperymentalne
self-ignition internal combustion engines
rapeseed oil fatty acids methyl esters FAME
diesel oil
experimental investigations
nitrogen oxides
tlenki azotu NOx
Opis:: Continuously increasing demand for energy, the depletion of unrenewable conventional fuels and the impact of political situation on their accessibility make a search for new energy sources become a necessity. Moreover, environmental concerns over harmful impact of hydrocarbon fuels combustion products in piston IC engines also contribute to the development of alternative fuels technologies. Plant fuels provide an option as regards IC engines fuelling. They have a major advantage of being renewable and easily biodegradable. The paper presents results of investigations into nitrogen oxides nox emissions in AD3.152 UR self-ignition engine fuelled with rapeseed oil fatty acids methyl esters FAME, diesel oil Ekodiesel Ultra D and their blends. The investigations were conducted at the engine test house. The engine operated in the external speed characteristics regime and load characteristics regimes at the rotational speed of 1400 and 2000 rpm. Measurements of nitrogen oxides nox emissions were taken for various settings of fuel injection advance angle. The experimental results were presented in a graphic form to compare measured nitrogen oxides nox emissions for the engine operating on different fuels and for different settings of the fuel injection advance angle. The analysis of experimental results aimed at the assessment of the impact of engine fuelling with plant fuel and plant fuel/diesel oil blends on nitrogen oxides nox emissions. The possibilities of reduction in nox emissions by means of fuel injection advance angle adjustment were also accounted for. The results obtained in the experimental investigations clearly indicate increased nox emissions when the AD3.152 UR engine ran on pure rapeseed oil methyl esters FAME or FAME and diesel oil blends when compared with diesel oil fuelling and the fuel injection advance angle set by the manufacturer. A decrease in injection advance angle with respect to the setting by the manufacturer resulted in the reduction in nox emissions while the engine operated on the above-mentioned fuels.
Ciągły wzrost zapotrzebowania na energię, wyczerpywanie się nieodnawialnych zasobów paliw konwencjonalnych oraz uzależnienie dostępu do ich pozyskiwania od sytuacji politycznej, stwarza konieczność poszukiwania nowych źródeł energii. Poza tym względy ekologiczne związane ze szkodliwym oddziaływaniem na środowisko produktów spalania paliw węglowodorowych w tłokowych silnikach spalinowych, stymulują rozwój technologii pozyskiwania paliw alternatywnych do ich zasilania. Jedną z takich możliwości jest zastosowanie do zasilania silników spalinowych paliw pochodzenia roślinnego. Zasadniczą zaletą tego rodzaju paliw jest to, że są one odnawialne i łatwo ulegają biodegradacji. W artykule przedstawiono wyniki badań emisji tlenków azotu N0x silnika o zapłonie samoczynnym AD3.152 UR zasilanego estrami metylowymi kwasów tłuszczowych oleju rzepakowego FAME, olejem napędowym Ekodiesel Ultra D i mieszaninami tych paliw. Badania przeprowadzono na hamowni silnikowej. Podczas badań silnik pracował według zewnętrznej charakterystyki prędkościowej oraz charakterystyk obciążeniowych wykonanych dla prędkości obrotowych 1400 i 2000 obr/min. Pomiary emisji tlenków azotu N0x przeprowadzono dla różnych regulacji kąta wyprzedzenia wtrysku paliwa. Wyniki przeprowadzonych badań przedstawiono w sposób graficzny pozwalający na porównanie zmierzonej emisji tlenków azotu N0x przy zasilaniu silnika różnymi paliwami oraz przy różnych regulacjach kąta wyprzedzenia wtrysku paliwa. Analizę wyników badań prowadzono pod kątem oceny wpływu zasilania silnika paliwem roślinnym i mieszaninami paliwa roślinnego z olejem napędowym na emisję tlenków azotu N0x oraz możliwości ograniczenia tej emisji poprzez regulację kąta wyprzedzenia wtrysku paliwa. Otrzymane wyniki badań jednoznacznie wskazują na wzrost emisji tlenków azotu N0x przy zastosowaniu do zasilania silnika AD3.152 UR czystych estrów metylowych oleju rzepakowego FAME oraz ich mieszanin z olejem napędowym, w porównaniu z zasilaniem silnika olejem napędowym i przy fabrycznym ustawieniu kąta wyprzedzenia wtrysku paliwa. Zmniejszając kąt wyprzedzenia wtrysku w stosunku do ustawienia fabrycznego uzyskano zmniejszenia emisji tlenków azotu N0x przy zasilaniu silnika wyżej wskazanymi paliwami.
Źródło:: Journal of KONES; 2007, 14, 3; 19-28
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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