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Wyświetlanie 1-15 z 38
Tytuł:
A comparative study of differential transformation and homotopy perturbation methods for transient combustion analysis for iron micro-particles in a gaseous oxidizing medium
Autorzy:
Yinusa, A. A.
Sobamowo, M. G.
Powiązania:
https://bibliotekanauki.pl/articles/1046539.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Differential transformation method
Homotopy perturbation method
Iron particle combustion
Temperature distribution
Thermal radiation
Opis:
In this paper, a comparative study of differential transformation and homotopy perturbation methods for transient combustion analysis of iron micro-particles in a gaseous oxidizing medium is presented. Also, parametric studies are carried out to properly understand the reaction of the process and the associated burning time. Thermal radiation effect from the external surface of burning particle and variation of iron particle density with temperature are considered. The solutions obtained by DTM and HPM are compared with those of the fourth order Runge-Kutta numerical method. Results show that DTM has more accurate results between the two approximate analytical methods considered. Also, results show that by increasing the heat realized parameter, combustion temperature increased and it faster reaches to its constant value. It is envisaged that the present study will create tremendous insight into means of properly managing combustible micro particles exiting factories and production process organization.
Źródło:
World Scientific News; 2019, 138, 2; 93-112
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A computational software program for determining the combustion temperatures of solid fuels
Autorzy:
Kowalik, M.
Boryca, J.
Powiązania:
https://bibliotekanauki.pl/articles/102184.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
combustion of solid fuels
combustion temperature
computational software
program
Opis:
The combustion temperature is one of parameters influencing the efficiency of combustion process. The analytical, model and design calculations of processes related to fuel combustion and heat exchange intensity require the combustion temperature to be correctly determined. These are, however, complex, and, as a consequence, burdensome and time-consuming requirements. Developing an appropriate software program will considerably streamline the calculation procedure. Based on analytical relationships for the combustion process, a computational software program has been developed within this study, which enables the determination of the calorimetric, theoretical and actual combustion temperatures of solid fuels.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 18; 60-67
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of thermal and mechanical stresses of Renault Premium DXi11 460 EEV four-stroke piston
Autorzy:
Kaliszewski, M.
Mazuro, P.
Powiązania:
https://bibliotekanauki.pl/articles/245402.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
heat transfer
temperature distribution
four-stroke engine piston
finite element method
1D combustion
Opis:
In this article the engine piston Renault Premium DXi11 430 460 EEV has been analysed using the Finite Element Method. Analysis consider as well heat transfer phenomenon as the thermal and mechanical strains of the piston. Simulations were performed for the point of engine maximum power. Piston material was assumed to be 40HM (1.7225) steel and its properties are delivered basing on available scientific papers. The simulation assumed mean values of heat transfer coefficient, reference temperature and cycle pressure based on engine data, maximum power engine work simulation in AVL Boost software and literature. Part of boundary condition (e.g. cylinder wall temperature) was assumed basing on authors’ engineering intuition and experience. The resulting temperature distribution in the piston was implemented for geometrically nonlinear mechanical FEM analysis. Both the analysis of thermal stresses and stresses of the hot piston in the top dead centre were performed.
Źródło:
Journal of KONES; 2018, 25, 2; 169-175
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concept of the exhaust system of combustion engines used in underground mining
Autorzy:
Lesiak, K.
Brzeżański, M.
Powiązania:
https://bibliotekanauki.pl/articles/134172.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
exhaust system
temperature of exhaust gases
CI combustion engine
flame arrester
hard coal mining
układ odprowadzania spalin
temperatura spalin
silnik spalinowy o zapłonie samoczynnym
urządzenie do odcinania płomienia w palniku
kopalnia węgla kamiennego
Opis:
Analyses the problems occurring in the exploitation combustion engines used in mining have been presented in article. Design solutions used at present to protect the intake and exhaust systems of internal combustion engines operated in underground hard coal mines have been also described. A new design concept of exhaust system have been presented.
Źródło:
Combustion Engines; 2017, 56, 2; 97-100
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Czynniki determinujące tworzenie i samozapłon mieszanki podczas rozruchu silnika o zapłonie samoczynnym
Factors determining creation of air-fuel mixture and its autoignition during self-ignition engine starting
Autorzy:
Pszczółkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/210014.pdf
Data publikacji:
2010
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
silniki spalinowe
rozruch w niskiej temperaturze
combustion engines
low temperature starting
Opis:
Podstawowymi procesami warunkującymi rozruch silnika o zapłonie samoczynnym są wytworzenie i samozapłon mieszanki paliwowo-powietrznej. Sposobem doprowadzenia energii do uruchamianego silnika i równocześnie czynnikiem wymuszającym procesy rozruchowe jest napędzanie wału korbowego przez układ rozruchowy. W artykule dokonano analizy przebiegu procesu tworzenia i samozapłonu mieszanki podczas rozruchu silnika o ZS w niskiej temperaturze. Scharakteryzowano czynniki powodujące wytworzenie i samozapłon mieszanki paliwowo-powietrznej w kolejnych fazach rozruchu. Przedstawiono wyniki badań wpływu podstawowych parametrów regulacyjnych silnika na charakterystyki rozruchowe. Szczególną uwagę poświęcono parametrom regulacyjnym układu zasilania silnika oraz wpływowi zmian wartości prędkości obrotowej wału korbowego na procesy rozruchu. Przedstawiono interpretacje i modele wyjaśniające przyczyny istniejących zależności.
The basic processes determining the self-ignition engine starting are: creating and autoignition of air-fuel mixture. The way of energy delivering to the started engine and simultaneously the factor extorting starting processes is crankshaft driving by a starting system. In the paper, the analysis of creating and self-ignition processes of air-fuel mixture during self-ignition engine starting at low temperature conditions is made. The factors causing creating and self-ignition of air-fuel mixture in the following starting stages are characterized. There are presented the research results of the basic adjustment parameters on engine starting characteristics. Special attention was devoted to adjustment parameters of the engine supply system and to the influence of crankshaft rotational speed on starting processes. There are presented the interpretations and models explaining the causes of existing dependences.
Źródło:
Biuletyn Wojskowej Akademii Technicznej; 2010, 59, 3; 149-170
1234-5865
Pojawia się w:
Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energetic Performances of Solid Composite Propellants
Autorzy:
Lempert, D.
Nechiporenko, G.
Manelis, G.
Powiązania:
https://bibliotekanauki.pl/articles/357962.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
solid composite propellant
specific impulse
density
combustion temperature
formation enthalpy
Opis:
Different kinds of solid composite propellant (SCP) are described. All ways to increase energetic potential of SCP are considered as well as pro et contra of each of these ways. Different kinds of oxidizer (perchlorates of ammonium, hydroxylammonium, and hydrazinium; ammonium salt of dinitramine; other saltlike and molecular oxidizers) are under consideration. The main principles creation of SCP formulation with optimal characteristics in the context of their concrete purpose are discussed, e.g. for rockets with considerably low ratio propellant volume/empty construction mass (V/M lower than 1 Litr/kg or so) the ballistic effectiveness may be increased with the replacement of aluminum by high-dense zirconium or zirconium hydride. Possibilities for creation of special SCP formulations for application at the far space, e.g. for Mars exploration are discussed as well.
Źródło:
Central European Journal of Energetic Materials; 2011, 8, 1; 25-38
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Engine researches on the influence of the piston ring insert on temperature distribution in piston
Autorzy:
Stężycki, P.
Kowalski, M.
Jankowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/949512.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engine
engine piston
piston ring insert
electromagnetic induction
temperature measurement
thermistor
Opis:
The article presents a method of piston temperature measurement on a running engine using electromagnetic induction for transferring measurement results from a moving measuring system placed in a piston to a stationary system attached to the engine crankcase and to measuring system located outside the engine. Selected test results that were carried out on a single-cylinder Diesel engine are presented. A system consisting of a thermistor and a secondary coil was mounted in the piston. The primary coil was mounted in the crankcase under the cylinder liner of the engine. Engine tests were aimed at determining the influence of the piston ring insert on the temperature distribution in the piston. Temperature measurements in the piston without the ring insert were carried out for comparison. In both cases, the pistons had the same geometrical dimensions. The tests were carried out in conditions of external characteristics (the maximum load as a function of engine speed) and load characteristics (load changes at constant engine speed). The test results in the form of the temperature difference between the temperature of piston top and the temperature under the top compression ring indicate that the ring insert is a barrier to the heat flow from the piston to the engine cooling system. In addition, the results of the piston temperature measurements during the step change of the engine speed and its load to the nominal value are presented.
Źródło:
Journal of KONES; 2018, 25, 4; 563-570
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examination of the influence of multi-injection strategy on thermodynamic indexes of engine cycle and on the emission of toxic compounds
Badanie wpływu strategii wieloczęściowego wtrysku paliwa na termodynamiczne wskaźniki pracy silnika i na emisję składników spalin
Autorzy:
Czajka, J.
Wisłocki, K.
Pielecha, I.
Borowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/133767.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
exhaust gas recirculation (EGR)
low temperature combustion
injection strategies
silnik ZS
EGR
niskotemperaturowe spalanie
strategie wtrysku paliwa
Opis:
The main target of this work was to investigate on the 1-cyl. research engine concerning practical realization possibilities of cold-flame-combustion when operating with high and very high Exhaust Gas Recirculation (EGR) rates. After determining of possibilities of lowering NOx and Soot emissions for EGR rates ca. 40-60% some further investigation on optimization of SOIand CoC parameters were performed. Additionally, some preliminary investigations of the optimization of combustion parameters when applying various strategies of multi-injection have been conducted and analyzed.
Głównym celem badań było uzyskanie efektu spalania niskotemperaturowego skutkującego zmniejszeniem emisji NOx wraz z jednoczesnym zmniejszeniem emisji sadzy (cząstek stałych) dzięki zastosowaniu dużego stopnia recyrkulowanych spalin. Po uzyskaniu możliwości obniżenia emisji NOx i sadzy przy zastosowaniu recyrkulacji spalin o udziale 40-60%, prowadzono dalsze badania nad optymalizacją parametrów SOI i CoC. Dodatkowo, prowadzono wybrane wstępne badania optymalizacyjne parametrów procesu spalania przy stosowaniu różnych strategii wtrysku wieloczęściowego.
Źródło:
Combustion Engines; 2014, 53, 2; 45-59
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exhaust gas temperature measurements in diagnostics of turbocharged marine internal combustion engines Part I standard measurements
Autorzy:
Korczewski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/259776.pdf
Data publikacji:
2015
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
diagnostic
internal combustion engine
exhaust gas temperature
Opis:
The article discusses the problem of diagnostic informativeness of exhaust gas temperature measurements in turbocharged marine internal combustion engines. Theoretical principles of the process of exhaust gas flow in turbocharger inlet channels are analysed in its dynamic and energetic aspects. Diagnostic parameters are defined which enable to formulate general evaluation of technical condition of the engine based on standard online measurements of the exhaust gas temperature. A proposal is made to extend the parametric methods of diagnosing workspaces in turbocharged marine engines by analysing time-histories of enthalpy changes of the exhaust gas flowing to the turbocompressor turbine. Such a time-history can be worked out based on dynamic measurements of the exhaust gas temperature, performed using a specially designed sheathed thermocouple. The first part of the article discusses possibilities to perform diagnostic inference about technical condition of a marine engine with pulse turbocharging system based on standard measurements of exhaust gas temperature in characteristic control cross-sections of its thermal and flow system. Selected metrological issues of online exhaust gas temperature measurements in those engines are discusses in detail, with special attention being focused on the observed disturbances and thermodynamic interpretation of the recorded measuring signal. Diagnostic informativeness of the exhaust gas temperature measurements performed in steady-state conditions of engine operation is analysed in the context of possible evaluations of technical condition of the engine workspaces, the injection system, and the fuel delivery process.
Źródło:
Polish Maritime Research; 2015, 1; 47-54
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exhaust gas temperature measurements in diagnostics of turbocharged marine internal combustion engines. Part II Dynamic measurements
Autorzy:
Korczewski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/258840.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
diagnostic
internal combustion engine
exhaust gas temperature
Opis:
The second part of the article describes the technology of marine engine diagnostics making use of dynamic measurements of the exhaust gas temperature. Little-known achievements of Prof. S. Rutkowski of the Naval College in Gdynia (now: Polish Naval Academy) in this area are presented. A novel approach is proposed which consists in the use of the measured exhaust gas temperature dynamics for qualitative and quantitative assessment of the enthalpy flux of successive pressure pulses of the exhaust gas supplying the marine engine turbocompressor. General design assumptions are presented for the measuring and diagnostic system which makes use of a sheathed thermocouple installed in the engine exhaust gas manifold. The corrected thermal inertia of the thermocouple enables to reproduce a real timehistory of exhaust gas temperature changes.
Źródło:
Polish Maritime Research; 2016, 1; 68-76
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of engine speed and the course of the fuel injection characteristics on forming the average combustion temperature in the cylinder of turbo diesel engine
Wpływ prędkości obrotowej i przebiegu charakterystyki wtrysku paliwa na kształtowanie się średniej temperatury spalania w cylindrze doładowanego silnika z zapłonem samoczynnym
Autorzy:
Gustof, P.
Powiązania:
https://bibliotekanauki.pl/articles/374541.pdf
Data publikacji:
2007
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
silnik z zapłonem samoczynnym
wtrysk paliwa
temperatura spalania paliwa
turbo diesel engine
fuel injection
fuel combustion temperature
Opis:
Average combustion temperatures inside a turbo diesel engine for the same load and the same total doze of fuel for two rotational speeds: 2004 [rpm] and 4250 [rpm] are presented in this paper. The aim of this work is also the evaluation of the influence of the temporary course of the fuel injection characteristics on forming temperature in the engine cylinder space for these temperatures. The calculations were carried out by means of two zone combustion model .
W pracy zostały przedstawione obliczenia średniej temperatury spalania wewnątrz doładowanego silnika z zapłonem samoczynnym, dla tego samego obciążenia i tej samej sumarycznej dawki paliwa dla dwóch prędkości obrotowych: 2004[min"1] oraz 4250[min"1]. Celem realizowanej pracy była również ocena wpływu chwilowego przebiegu charakterystyki wtrysku paliwa na kształtowanie się temperatury w przestrzeni cylindra silnika dla tych prędkości. Obliczenia zostały przeprowadzone przy zastosowaniu dwustrefowego modelu procesu spalania.
Źródło:
Transport Problems; 2007, 2, 3; 5-10
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of speed and load on the engine temperature at an elevated temperature cooling fluid
Autorzy:
Krakowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/243666.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engines
cooling system
coolant temperature
Opis:
In this article has been found that the most popular and widely used method of cooling is liquid cooling, which ensures uniformity of temperature around the combustion chamber and easy acquisition and transfer of heat, although the properties of water are limited by maximum temperature of the coolant. Preliminary scientific research of such a system indicates the possibility of increasing overall efficiency and reducing toxic components in exhaust gases at low engine loads when the engine exhaust temperature of the classic system is too low for efficient catalytic action. This paper presents the dynamometer test stand designed and built using original components of diesel engine 4CT90 production of WSW "ANDORIA" SA. Presented system was designed for the four cylinder with indirect fuel injection system. Research was made on the engine dynamometer stand, which was equipped with standard measure devices (measures: speed, torque, temperatures, flows) and exhaust gas analysers. The temperature of this liquid was increased to the higher level than temperature of boiling water in normal conditions. Overpressure inside the cooling system was limited to 0.3 MPa, the temperature inside the cooling system was increased to 115–120°C. During the test, the cooling system was filled with coolant at 90%. The selected results of investigations of the cooling system for the combustion engine working with higher temperature of the cooling liquid, where the influence of speed and load on the engine temperature were presented.
Źródło:
Journal of KONES; 2013, 20, 4; 185-192
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the coolant temperature on emission of toxic compound and engine work parameters
Autorzy:
Walentynowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/242404.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engines
cooling systems
higher coolant temperature
Opis:
The selected results of investigations of the cooling system for the combustion engine working with higher temperature of the cooling liquid were presented. The temperature of this liquid were increased to the temperature of boiling water, as a basic compound of the cooling liquid. This system was designed for the four cylinder diesel engine 4CT90 with indirect fuel injection system. Investigation was realized on the dynamometer stand equipped with standard measure devices (measures: speed, torque, temperatures, flows) and exhaust gas analyzers. The speed and torque engine characteristics were determined. The over pressure inside cooling system was limited up to 0.07 MPa regarding lower pressure structural integrity of the standard units of this system. Intensity of the cooling, protective against too higher pressure, were changed by switching small and full liquid circulation, and one or two fans of the cooler. temperature inside cooling system was increased up to 110 centigrade. Results ofincreasing of the cooler temperature were lower frictions of unburned products of combustion process (CO and HC) in the exhaust gas (up to 50%) in low torque and low engine speed. This is area when catalytic reactor does not work because too low is exhaust gas temperature. It wasfound that engine economy was increased to 7% in maocimum load and high engine speed.
Źródło:
Journal of KONES; 2009, 16, 1; 583-590
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Internal combustion engine cooling system with elevated coolant temperature research on the model test stand
Autorzy:
Krakowski, R.
Powiązania:
https://bibliotekanauki.pl/articles/242843.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engines
engine cooling
test stand
coolant temperature
Opis:
In the paper a model test stand designed and built using original components of diesel engine 4CT90 is presented. The stand provides working conditions as close as possible to the exploitation conditions of the engine cooling system. This applies both to the intensity of heat inside the cylinders of the engine, the temperature uniformity along the cylinder axis, as well as variable-speed water pump. Research carried out on the model stand were aimed at checking the operation of the cooling intensity control with varying levels of filling of the cooling system and develop a control method of the cooling system before testing on the dynamometer stand. In addition, system operation at elevated cooling liquid pressure for the possibility of obtaining the elevated coolant temperature were checked. The influence of working conditions on the level of the temperature was also analysed. In this paper, the characteristics selected for two values of pressure, for 0.15 MPa and 0.2 MPa, and for two different values of the degree of filling of the cooling liquid were presented. During the warming-up and continuous heating of the cylinder and the cylinder head by electrical heaters, temperature and overpressure courses before and after the liquid radiator, temperature before the inlet and outlet of the liquid from the engine and the temperature at selected points inside the engine water jacket are designated. The results of measurements of the coolant pump flow at different speed water pump were also presented in this paper.
Źródło:
Journal of KONES; 2013, 20, 4; 177-183
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of impacting of aging processes on properties of biodiesel
Badanie wpływu procesów starzenia na zmianę właściwości biodiesla
Autorzy:
Baczewski, K.
Szczawiński, P.
Powiązania:
https://bibliotekanauki.pl/articles/243169.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
silniki spalinowe
paliwa alternatywne
starzenie
biodiesel
estry metylowe oleju rzepakowego (RME)
oleje napędowe
parametry niskotemperaturowe
combustion engines
alternative fuels
aging processes
Rapeseed Oil Methylesters (RME)
diesel fuels
low-temperature parameters
Opis:
W pracy przedstawiono wyniki badań laboratoryjnych procesów starzenia biopaliw (biodiesla), takich jak estry metylowe oleju rzepakowego (RME) i ich mieszanin z bazowym hydrorafinowanym olejem napędowym (HON). Określono wpływ powietrza, światła słonecznego, oddziaływania ciepła i obecności wody na zmianę liczby kwasowej, lepkości kinematycznej i parametrów niskotemperaturowych paliw (temperatury mętnienia, temperatury zablokowania zimnego filtru i temperatury płynięcia). Schemat starzenia próbek paliw, wpływ czasu i warunków starzenia na zmianę liczby kwasowej próbek badanych paliw, temperatura zablokowania zimnego filtru TZZF próbek paliw starzonych w różnych warunkach w ciągu 60 tygodni są zilustrowane w artykule. Stwierdzono, że najbardziej podatny na starzenie były estry metylowe oleju rzepakowego (RME) i bazowy hydrorafinowany olej napędowy. W rezultacie starzenia następuje bardzo duży przyrost liczby kwasowej, małe zmiany lepkości kinematycznej i bardzo małe zmiany parametrów niskotemperaturowych (temperatury mętnienia, temperatury zablokowania zimnego filtru i temperatury płynięcia) estrów metylowych oleju rzepakowego (RME). Najintensywniejsze starzenie estrów metylowych oleju rzepakowego (RME) powodują wymuszenia cieplne. Obecność wody intensyfikuje starzenie estrów metylowych oleju rzepakowego (RME), szczególnie przy długim czasie kontaktu.
The paper presents the results of laboratory investigations of aging processes of the biodiesel such as rapeseed oil methylesters (RME) and their blends with hydrofining based diesel fuels. The influence of air, light, elevated temperature and the presence of water on the total acid number, kinematic viscosity at 40°C and low-temperature parameters (Cloud Point, Cold Filter Plugging Point and Pour Point) of the fuels was determined. The aging of fuel samples, acid number as a function of time and conditions of aging for evaluated samples of fuels, and Cold Filter Plugging Point (CFPP) of fuel samples aging at different conditions during 60 weeks are illustrated in the paper. The least resistance to aging of rapeseed oil methylesters (RME) and hydrofining based diesel fuel was obtained. The aging influence dramatic increase in total acid number, little changes of the kinematic viscosity at 40°C and least changes of low-temperature parameters (Cloud Point, Cold Filter Plugging Point and Pour Point) of rapeseed oil methylesters (RME). The elevated temperature causes the largest impact on aging of rapeseed oil methylesters(RME). The aging of rapeseed oil methylesters (RME) is intensified in presence of water especially for long time of contact.
Źródło:
Journal of KONES; 2007, 14, 2; 27-34
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 38

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