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Tytuł:
Crankshaft geometry modification and strength simulations for a new design of diesel opposed-piston engine
Autorzy:
Magryta, Paweł
Pietrykowski, Konrad
Powiązania:
https://bibliotekanauki.pl/articles/24202479.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
crankshaft
FEM
diesel
opposed-piston engine
strength
wał korbowy
MES
silnik o tłokach przeciwbieżnych
wytrzymałość
Opis:
The article presents simulation strength calculations of a newly designed crankshaft for a PZL 100 engine with a reciprocating piston design. This engine is the subject of a research and development project co-financed by NCBR. The article presents four successive versions of the crankshaft geometric changes which underwent strength calculations. Such elements as the outer and inner parts of the crankshaft arm were changed in these geometric versions. The geometry of the shaft was changed using Catia v5 software, while strength calculations were carried out in Abaqus software. In summary, one of the presented models was selected for further work due to the possible simplification of the manufacturing process and the reduction of mass and stresses. This model was further investigated in the project.
Źródło:
Combustion Engines; 2023, 62, 3; 123--128
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the influence of the opening pressure of a marine diesel engine injector on the results of numerical simulation of the working cycle and their comparison with the results of the laboratory experiment
Autorzy:
Puzdrowska, Patrycja
Powiązania:
https://bibliotekanauki.pl/articles/24202456.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
marine diesel engine
numerical simulation
diagnostic parameters
injector opening pressure
okrętowy silnik spalinowy
symulacje numeryczne
parametry diagnostyczne
ciśnienie otwarcia wtryskiwacza
Opis:
The article presents the results of a numerical simulation of the working process carried out in a diesel engine. In the applied utility program DIESEL-RK, the laboratory engine Farymann Diesel type D10 was implemented. A selected inoperability of its functional fuel supply system - reduced opening pressure of the injector pinj - was introduced. The values of adequate diagnostic parameters were determined: working gas temperature in the cylinder Tcyl, exhaust gas temperature Texh, combustion (flame) temperature Tcomb and concentration of nitrogen oxides in the exhaust gas NOx. Experimental tests were carried out on the experimental engine with the inoperative condition actually introduced, analogous to the numerical simulation, and the diagnostic parameters Texh and NOx were recorded. The results obtained by numerical simulation of the processes and during the active experiment on the experimental engine were compared.
Źródło:
Combustion Engines; 2023, 62, 2; 9--14
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of processes in the WLTC test of a passenger car with a diesel engine
Autorzy:
Andrych-Zalewska, Monika
Powiązania:
https://bibliotekanauki.pl/articles/24202473.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
exhaust emission
WLTC test
silnik diesla
emisja spalin
test WLTC
Opis:
The test results and their analysis was discussed in this article. The tests were carried out in accordance with the WLTP (Worldwide Light Duty Test Procedure), on a passenger car with a compression ignition engine. The analysis was conducted doe the following variables: vehicle speed, exhaust emission rate and fuel consumption volumetric rate. The subject of the research are exhaust emission components that are harmful to the health of living organisms: carbon monoxide, hydrocarbons and nitrogen oxides, as well as greenhouse gases. The research results have shown a very large range of values for carbon monoxide, organic compounds and nitrogen oxides emission rate characteristics. The average distance-specific emissions values of carbon monoxide, organic compounds and nitrogen oxides were very small and were in line with the Euro 6 requirements within a large margin. Correlation studies of the measured variables were conducted - between vehicle speed and exhaust emission rate as well as volumetric fuel consumption rates, and between exhaust emission rates and volumetric fuel consumption rates. The correlation studies have shown that the highest coefficient of determination in relation to vehicle speed was found for volumetric fuel consumption and carbon dioxide emission rate, and the weakest correlation for carbon monoxide emission rate and nitrogen oxides emission rate. The correlation between the rate of volumetric fuel consumption and carbon dioxide emission, as well as for hydrocarbon emission and methane emission rates, was found to be the strongest. The carbon monoxide emission rate was the least correlated with all the other measured variables. Dimensionless statistical characteristics of the measured variables were determined, such as: extreme values, range, mean value, median, standard deviation, kurtosis, skewness and coefficient of variation. For all of them, the mean value was much greater than the median, and the standard deviation was greater still, than both of those values. The numerical distributions for the values of exhaust emission rate and volumetric fuel consumption turned out to be leptokurtic and have right-sided asymmetry. The coefficient of variation analysis made it possible to assess that the most dynamic properties could be observed in organic compounds emission rate, followed by carbon monoxide and nitrogen oxides emission rates, and finally - the vehicle speed. Histograms of the examined processes were determined. The vehicle speed histogram was characterized by relative uniformity apart from the dominance of the idle speed. Histograms of exhaust emission rate variables were most frequently dominated by small values. The zero values occurred less frequently for the fuel consumption volumetric rate histogram. Based on the conducted research and the obtained data, a set of conclusions was drawn.
Źródło:
Combustion Engines; 2023, 62, 3; 52--62
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological aspects of using mixtures of canola oil with n-hexane in diesel engine
Autorzy:
Longwic, Rafał
Sander, Przemysław
Tatarynow, Dawid
Powiązania:
https://bibliotekanauki.pl/articles/2097661.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
Diesel engine
nitrogen oxides
hydrocarbons
carbon dioxide
combustion
canola oil
n-hexane
common rail
silnik Diesla
tlenki azotu
węglowodory
dwutlenek węgla
spalanie
olej rzepakowy
n-heksan
Common Rail
Opis:
The article discusses the results of research on the use of canola oil and canola oil with the addition of n-hexane in a compression-ignition engine. An engine with a Common Rail injection system was tested in real traffic conditions on the road and on a chassis dynamometer. The tested fuels were fed to the engine by an additional fuel supply system. An analysis of the effect of the addition of n-hexane on the emission of the main components of toxic exhaust gases was carried out. The proposed solution may contribute to extending the service life of currently used compression ignition engines due to the improvement of the ecological properties of this type of drive sources.
Źródło:
Combustion Engines; 2022, 61, 3; 56--60
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental investigation biodiesel-n-butanol fuels blends on performance and emissions in the diesel engine
Autorzy:
Labeckas, Gvidonas
Slavinskas, Stasys
Mickevičius, Tomas
Powiązania:
https://bibliotekanauki.pl/articles/2097621.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
biodiesel
n-butanol
lubricity
brake specific fuel consumption
engine efficiency
emissions
smoke opacity
silnik diesla
smarność
jednostkowe zużycie paliwa przez hamulce
sprawność silnika
emisje
zadymienie spalin
Opis:
The paper presents the experimental test results reflecting the comparative changes in the performance efficiency and emissions of the exhaust of a naturally aspirated, four-stroke, single-cylinder, air-cooled diesel engine due to its transition from neat rapeseed oil biodiesel to fuel blends prepared by mixing in various proportion (by volume) rapeseed methyl ester (B) and butanol (Bu). The lubricity properties of biodiesel-n-butanol fuel blends were studied using HFRR method. In contrast to previous works, the undertaken investigation is performed with a totally renewable, binary liquid biofuel blends. The purpose of the research is to reduce simultaneously the production of NOx emissions and the exhaust smoke with respect to neat biodiesel due to potentially improved homogeneity of combustible mixture and particulate matter emissions benefits suggested by the higher oxygen content (21.62 wt%) and the relatively lower carbon-to-hydrogen ratio (4.8) of the normal n-butanol. The tests revealed that the brake specific fuel consumption for the binary biodiesel-n-butanol fuel blends is always higher than that neat biodiesel produces under the same loading conditions. Maximum nitrogen oxide (NOx) emissions were obtained with the engine running on neat biodiesel (2290 ppm). At full (100%) load conditions, the lowest NOx emission was obtained with the engine running on a biofuel BBu20 blend. The lowest level of carbon monoxide emissions (CO) was observed, when engine running with the most butanol-oxygenated biofuel blend BBu20.The highest smoke opacity of the exhaust was obtained when the engine was fuelled with neat biodiesel and at full load.
Źródło:
Combustion Engines; 2022, 61, 1; 90--95
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model tests of a marine diesel engine powered by a fuel-alcohol mixture
Autorzy:
Zacharewicz, Marcin
Kniaziewicz, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/2097626.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
model tests
diesel engine
model adequacy assessment
alternative fuels
diagnostics
badania modelowe
silnik Diesla
ocena adekwatności modelu
paliwa alternatywne
diagnostyka
Opis:
The paper presents the results of model and empirical tests conducted for a marine diesel engine fueled by a blend of n-butanol and diesel oil. The research were aimed at assessing the usefulness of the proprietary diesel engine model in conducting research on marine engines powered by alternative fuels to fossil fuels. The authors defined the measures of adequacy. On their basis, they assessed the adequacy of the mathematical model used. The analysis of the results of the conducted research showed that the developed mathematical model is sufficiently adequate. Therefore, both the mathematical model and the computer program based on it will be used in further work on supplying marine engines with mixtures of diesel oil and biocomponents.
Źródło:
Combustion Engines; 2022, 61, 2; 83--88
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the F-statistic of the Fisher-Snedecor distribution to analyze the significance of the effect of changes in the compression ratio of a diesel engine on the value of the specific enthalpy of the exhaust gas flow
Autorzy:
Puzdrowska, Patrycja
Powiązania:
https://bibliotekanauki.pl/articles/2097566.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
exhaust gas temperature
Fisher-Snedecor decomposition F statistic
diagnosis
silnik Diesla
temperatura spalin
F-statystyka rozkładu Fishera-Snedecora
diagnoza
Opis:
The paper discusses the impact of changes in the compression ratio on the operating parameters of a diesel engine, e.g. on the temperature of exhaust gases. It presents the construction of the laboratory test stand, on which experimental measurements were realized. It is characterized how the actual changes of the compression ratio were introduced to the existing engine. The program of experimental investigations taking into account the available test stand and measurement possibilities was described. A statistical and qualitative analysis of the obtained measurement results was made. The use of F statistics of the Fisher-Snedecor distribution was proposed to assess the significance of the effect of compression ratio changes on the specific enthalpy of the exhaust gas stream. The specific enthalpy of exhaust gases was analysed for one cycle of diesel engine work, determined on the basis of the course of quickly varying temperature of exhaust gases. The results of these analyses are discussed and the utilitarian purpose of this type of evaluation in parametric diagnostics of piston engines is presented.
Źródło:
Combustion Engines; 2021, 60, 3; 80--88
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative study of combustion and emissions of diesel engine fuelled with FAME and HVO
Autorzy:
Hunicz, Jacek
Krzaczek, Paweł
Gęca, Michał
Rybak, Arkadiusz
Mikulski, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/2097506.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
renewable fuels
HVO
hydrotreated vegetable oil
emissions
silnik Diesla
paliwa odnawialne
hydrorafinowany olej roślinny
emisje
Opis:
This study investigates combustion and emission characteristics of a contemporary single-cylinder compression ignition engine fuelled with diesel, fatty acid methyl esters (FAME) and hydrotreated vegetable oil (HVO). These two drop-in fuels have an increasing share in automotive supply chains, yet have substantially different physical and auto-ignition properties. HVO has a lower viscosity and higher cetane number, and FAME has contrary characteristics. These parameters heavily affect mixture formation and the following combustion process, causing that the engine preoptimized to one fuel option can provide deteriorated performance and excess emissions if another sustainable option is applied. To investigate the scale of this problem, injection pressure sweeps were performed around the stock, low NOx and low PM engine calibration utilizing split fuel injection. The results showed that FAME and HVO prefer lower injection pressures than diesel fuel, with the benefits of simultaneous reduction of all emission indicators compared to DF. Additionally, reduction of injection pressure from 80 MPa to 60 MPa for biodiesels at low engine load resulted in improved brake thermal efficiency by 1 percentage point, due to reduced parasitic losses in the common rail system.
Źródło:
Combustion Engines; 2021, 60, 1; 72--78
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of nitrON® cetane-detergent additive to B7 fuel on energy parameters and exhaust gas composition of a 6Dg locomotive with a Caterpillar C27 engine
Autorzy:
Cisek, Jerzy
Borowski, Andrzej
Całkowska, Joanna
Wichary, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/2097555.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
biofuels
fuel additive
exhaust gas composition
silnik Diesla
biopaliwa
dodatek do paliwa
skład spalin
Opis:
In order to avoid the negative effects of increasing the amount of RME in the fuel, the nitrON® package was used, containing 3 different additives: stabilizing, washing and increasing the cetane number of the fuel. The tests were carried out with the use of the Caterpillar C27 engine of the 6Dg locomotive connected to a water resistor. The hourly engine fuel consumption (FC), NOx concentration and exhaust opacity were measured for 3 points of the F test, in accordance with UIC 624. The concentration of the nitrON® additive in the test fuel was 1500 ppm (v/v). For idling, the reduction in FC value was only 1.5% (in relation to the base fuel), but for a very high engine load and nominal rotational speed, the percentage reduction in FC was as high as 5%. The reduction of NOx concentration for idling (as a result of using nitrON®) was approx. 10%, while for high engine load, the percentage reduction of NOx concentration in the exhaust gas exceeded 15%.
Źródło:
Combustion Engines; 2021, 60, 3; 51--58
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The emission of harmful compounds from the marine diesel engine fueled by a blend of n-butanol and marine fuel
Autorzy:
Bogdanowicz, Artur
Kniaziewicz, Tomasz
Zadrąg, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/2097614.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
emission
marine diesel engine
n-butanol
marine fuel blend
emisja
okrętowy silnik spalinowy
żeglugowa mieszanka paliwowa
Opis:
The use of renewable fuels may be an action leading to the reduction of pollutant emissions. This group includes biobutanol as a product of biomass fermentation. Some of its physicochemical properties, including the ability to mix with hydrocarbon fuels, make it suitable for use as a fuel component for marine diesel engines. The article presents the results of research on the concentration of exhaust gas components of a Sulzer 6AL20/24 diesel engine powered by a mixture of n-butane and diesel oil. The emission intensity were calculated for the tested components: carbon monoxide, carbon dioxide and nitrogen oxides. The emission intensity surface graphs were created based on the calculated data. The tests were carried out using different concentrations of the mixture of n-butanol and marine fuel.
Źródło:
Combustion Engines; 2021, 60, 4; 90--95
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
By-products from thermal processing of rubber waste as fuel for the internal combustion piston engine
Autorzy:
Chwist, Mariusz
Pyrc, Michał
Gruca, Michał
Szwaja, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/2097462.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
pyrolysis oil
thermal conversion
biocrude
diesel engine
alternative fuels
olej popirolityczny
konwersja termiczna
silnik diesla
paliwa alternatywne
Opis:
The article presents results of investigation on the combustion of a mixture of pyrolysis oil from tires and regular fuel in the internal combustion reciprocating piston engine. The tested fuel consisted of: diesel fuel and pyrolysis oil at amount of 10% by volume. The tests were carried out on a single-cylinder naturally aspirated compression-ignition engine. The engine was equipped with a common rail fuel injection system and an electronic control unit that allowed changing injection timing. A comparative analysis of pressure-volume charts for the reference fuel, which was diese fuel, and for a mixture of diesel with 10% addition of pyrolysis oil was carried out. Injector characteristics for the reference fuel and the mixture were determined. Engine efficiency for both fuels was also determined. Unrepeatability of the engine work cycles for the diesel fuel and the tested mixture was calculated. Finally, exhaust toxic emission was analyzed. It was found that the pyrolysis oil can be used as valuable additive to regular diesel fuel at amount up to 10%, however, toxic exhaust gases emission was increased.
Źródło:
Combustion Engines; 2020, 59, 2; 11--18
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Compression-ignition engine fuelled with diesel and hydrogen engine acceleration proces
Autorzy:
Longwic, Rafał
Woźniak, Gracjana
Sander, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/2097451.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
hydrogen
compression-ignition engine
acceleration process
diesel fuel
wodór
silnik wysokoprężny
proces przyspieszania
olej napędowy
Opis:
The paper presents the results of research consisting in acceleration of a diesel engine powered by diesel and hydrogen. The test stand included a diesel engine 1.3 Multijet, hydrogen cylinders and measuring equipment. Empirical tests included engine testing at idle and at specified speeds on a chassis dynamometer, vehicle acceleration in selected gears from specified initial values of engine revolutions was also tested.. Selected parameters of the diesel fuel combustion and injection process were calculated and analyzed. The paper is a preliminary attempt to determine the possibility of co-power supply to diesel and hydrogen engines.
Źródło:
Combustion Engines; 2020, 59, 1; 47--51
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of adequacy of a model of a marine diesel engine based upon empirical research
Autorzy:
Kniaziewicz, Tomasz
Zacharewicz, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/2097458.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
marine diesel engine
diagnostics
modeling
okrętowy tłokowy silnik spalinowy
diagnostyka
modelowanie
Opis:
The article presents a mathematical model of a marine diesel engine developed for the needs of the research on the innovative method of evaluating technical condition of a marine engine. Basic assumptions of the method under development have also been included. The main focus has been directed on the evaluation of adequacy of a mathematical model of a marine diesel engine proposed in this article. In addition, measures of adequacy for the needs of the conducted research have also been presented. Finally, the article shows results from the conducted research followed by conclusions.
Źródło:
Combustion Engines; 2020, 59, 2; 40--45
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the significance of the effect of the active cross-sectional area of the inlet air channel on the specific enthalpy of the exhaust gas of a diesel engine using statistics F of the Fisher-Snedecor distribution
Autorzy:
Puzdrowska, Patrycja
Powiązania:
https://bibliotekanauki.pl/articles/2097472.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
exhaust gas temperature
Fisher-Snedecor decomposition F statistic
diagnosis
silnik Diesla
temperatura spalin
F-statystyka rozkładu Fishera-Snedecora
diagnoza
Opis:
This paper presents the application of Fisher-Snedecor distribution F statistics to assess the significance of the influence of changes in the active cross-sectional area of the inlet air channel (Adol) flow in a diesel engine on the observed diagnostic parameter determined on the basis of measurements of the quick changing exhaust gas temperature in the outlet channel, which is the specific enthalpy of the exhaust gas stream within one engine operating cycle (hspal). A plan of experimental tests carried out on the laboratory stand of a single-cylinder Farymann Diesel type D10 laboratory engine was presented and the method of determination of F statistics values for the obtained measurement results was characterized. Representative results of calculations were presented and the strength of Adol input parameter influence on the determined diagnostic parameter hspal simplified physical model of the working process of a compression ignition engine as the object of diagnosis was evaluated. It is planned to further develop the experimental research program to determine the significance of the influence of changes in the values of selected parameters of the engine structure on other diagnostic measures determined from the exhaust gas temperature signal, i.e. the mean peak-to-peak value as well as the rate (intensity) of increase and decrease in its value for individual engine cycles.
Źródło:
Combustion Engines; 2020, 59, 3; 10--15
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An investigation of the fuel injector dedicated to the aircraft opposed-piston two-stroke diesel engine
Autorzy:
Siadkowska, Ksenia
Wendeker, Mirosław
Grabowski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/133769.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
injector
opposed-piston engine
spray range
silnik diesla
wtryskiwacz
silnik o tłokach przeciwbieżnych
Opis:
The paper presents the research results of the injector construction with the modified injection nozzle. The injector is designed for a prototype opposed-piston aircraft diesel engine. The measurements were based on the Mie scattering technique. The conditions of the experiment corresponded to maximum loads similar to those occurring at the start. The measuring point was selected in line with the analysis of engine operating conditions: combustion chamber pressure at the moment of fuel delivery (6 MPa) and fuel pressure in the injection rail (140 MPa). The analysis focused on the average spray range and distribution, taking into account the differences between holes in the nozzle. As a result of the conducted research, the fuel spray range was defined with the determined parameters of injection. The fuel spray ranges inside the constant volume chamber at specific injection pressures and in the chamber were examined, and the obtained results were used to verify and optimize the combustion process in the designed opposed-piston two-stroke engine.
Źródło:
Combustion Engines; 2019, 58, 2; 151-155
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 106

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