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Wyświetlanie 1-15 z 23
Tytuł:
Test stand for a combined heat and power unit fed with alternative gas fuels
Autorzy:
Boruta, G.
Imiołek, M.
Piętak, A.
Powiązania:
https://bibliotekanauki.pl/articles/244809.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
power and heat cogeneration
piston combustion engine
gas fuel
biogas
Opis:
This paper presents the reasons for the development of gas-combined power and heat units and justification for testing the effect of the used gas fuel on the performance of such units. A PBCHP10VB CHP unit driven by a liquidcooled piston combustion engine adapted for feeding with gas fuels is described. The concept is presented for testing the effect of different gas fuel mixtures, including biogas, on this unit’s operation, mainly on the obtained electric power from the current generator and the temperature of the liquid cooling the driving engine heating up output water and on the composition of exhaust gas from this engine. A simple device for obtaining gas fuels containing different combustible gas mixtures is presented. The instruments used to check the composition of the obtained gas fuel and check exhaust gas from the engine are briefly described. The paper describes a test stand for testing the effect of different gas fuels on the operation of a PBCHP10VB gas CHP unit manufactured by Power Blessed Co., Ltd registered in Shanghai, constructed at the Department of Mechatronics and Technical and Information Technology Education of the Faculty of Technical Sciences at the University of Warmia and Mazury in Olsztyn.
Źródło:
Journal of KONES; 2013, 20, 4; 39-45
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of vessel power plants
Diagnostyka okrętowych siłowni spalinowych
Autorzy:
Charchalis, A.
Powiązania:
https://bibliotekanauki.pl/articles/329162.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
diagnostyka techniczna
tłokowy silnik spalinowy
turbinowy silnik spalinowy
siłownia okrętowa
technical diagnostics
piston engine
gas turbine engines
vessel power plants
Opis:
In this paper, the problems of diagnostics of main propulsion marine engines are presented. Piston or turbine engines are used for main propulsion of vessel power plants. Diesel engine diagnostic systems of merchant vessel engines are discussed. Finally, description of diagnostic methods implemented in turbine and piston engines in Polish Navy ships are introduced.
W referacie przedstawiono problematykę diagnozowania okrętowych silników napędu głównego. Silnikami tymi mogą być tłokowe lub turbinowe silniki spalinowe. Omówiono stosowane systemy diagnostyczne silników statków handlowych. Przedstawiono także opis metod diagnostycznych w zbudowanych systemach diagnozowania silników tłokowych i turbinowych okrętów Polskiej Marynarki Wojennej.
Źródło:
Diagnostyka; 2008, 4(48); 133-137
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dual-fuel feeding of diesel engine with generator gas and liquid fuel
Dwupaliwowe zasilanie silnika ZS gazem generatorowym i paliwem plynnym
Autorzy:
Cupial, K.
Duzynski, A.
Gruca, M.
Grzelka, J.
Szwaja, S.
Powiązania:
https://bibliotekanauki.pl/articles/793501.pdf
Data publikacji:
2011
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
piston engine
generator gas
sewage sludge
gasification
dual-fuel feeding
diesel engine
liquid fuel
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bench Tests for Exhaust Gas Temperature Distribution in an Aircraft Piston Engine with and without a Turbocharger
Autorzy:
Czarnigowski, Jacek Andrzej
Skiba, Krzysztof
Rękas, Daniel
Ścisłowski, Karol
Jakliński, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2123277.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
temperature distribution
piston engine
exhaust system
turbocharging
Rotax 912
Opis:
In ultralight aviation, a very important engine parameter is the power-to-weight ratio. On the one hand, there is a tendency to minimize the size and weight of engines, and on the other hand, there is a demand to achieve the highest possible power by using supercharging systems. Increasing power brings many benefits, but it also increases temperature in the exhaust system, posing a threat to delicate parts of the ultralight aircraft fuselage. Therefore, it is necessary to control temperature values in the engine exhaust system. This article presents the temperature distribution in the exhaust system of an aircraft engine by the example of a four-cylinder Rotax 912 engine with an electronic fuel injection system. The research was conducted in two stages: measurements were made first for the engine without a turbocharger with an original exhaust system and later for its modified version with an added turbocharger system. The paper presents a comparative analysis of exhaust gas temperatures measured at three points: 30, 180 and 1000 mm from the cylinder head. The tests were conducted for the same preset engine operating conditions at constant speed and manifold air pressure. It has been shown that the exhaust temperature in the exhaust manifold decreases with the distance from the cylinder head. The highest gradient, over three times higher than the gas temperature from 589.9 °C to 192.3 °C, occurred in the manifold with a turbocharger for 2603 RPM and 31 kPa of manifold air pressure. The introduction of turbocharging causes an increase in exhaust gas temperatures before the turbocharger by an average of 12%, with this increase being greater for operating points of higher inlet manifold pressure. Turbocharging also causes a significant decrease in exhaust gas temperatures behind the turbocharger and the silencer because the temperature drops there by an average of 25%.
Źródło:
Advances in Science and Technology. Research Journal; 2021, 15, 3; 155--166
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concept of computational model of charge composition changes in the cylinder during the gas exchange process
Koncepcja modelu obliczeniowego zmian składu ładunku w cylindrze w okresie wymiany ładunku
Autorzy:
Danilecki, K.
Powiązania:
https://bibliotekanauki.pl/articles/263649.pdf
Data publikacji:
2007
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
cylinder
model obliczeniowy
silnik tłokowy
wymiana ładunku
computational model
gas exchange process
piston engine
Opis:
A proposal of calculations of the gas exchange process in the CI piston engine has been presented that takes into account changes of chemical composition of the charge resulting from backflows and mixing of air with exhaust gases.
W artykule przedstawiono propozycję obliczeń procesu wymiany ładunku w tłokowym silniku ZS uwzględniającą zmiany składu chemicznego ładunku wynikające z przepływów zwrotnych oraz wymieszania powietrza ze spalinami.
Źródło:
Archiwum Motoryzacji; 2007, 4; 309-320
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparing combined gas tubrine/steam turbine and marine low speed piston engine/steam turbine systems in naval applications
Autorzy:
Dzida, M.
Olszewski, W.
Powiązania:
https://bibliotekanauki.pl/articles/260049.pdf
Data publikacji:
2011
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
marine power plants
combined systems
piston internal combustion engine
gas turbine
steam turbine
Opis:
The article compares combined systems in naval applications. The object of the analysis is the combined gas turbine/steam turbine system which is compared to the combined marine low-speed Diesel engine/steam turbine system. The comparison refers to the additional power and efficiency increase resulting from the use of the heat in the exhaust gas leaving the piston engine or the gas turbine. In the analysis a number of types of gas turbines with different exhaust gas temperatures and two large-power low-speed piston engines have been taken into account. The comparison bases on the assumption about comparable power ranges of the main engine.
Źródło:
Polish Maritime Research; 2011, 4; 43-48
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the possible increasing of efficiency of ship power plant with the system combined of marine diesel engine, gas turbine and steam turbine, at the main engine - steam turbine mode of cooperation
Autorzy:
Dzida, M.
Powiązania:
https://bibliotekanauki.pl/articles/258636.pdf
Data publikacji:
2009
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
combined systems
gas turbine
piston combustion engine
ship power plants
steam turbine
Opis:
This paper presents a concept of a ship combined high-power system consisted of main piston engine and associated with it: gas power turbine and steam turbine subsystems, which make use of energy contained in exhaust gas from main piston engine. The combined system consisted of a piston combustion engine and an associated with it steam turbine subsystem, was considered. An algorithm and results of calculations of the particular subsystems, i.e. of piston combustion engine and steam turbine, are presented. Assumptions and limitations taken for calculations, as well as comparison of values of some parameters of the system and results of experimental investigations available from the literature sources, are also given. The system’s energy optimization was performed from the thermodynamic point of view only. Any technical – economical analyses were not carried out. Numerical calculations were performed for a Wärtsilä slow-speed diesel engine of 52 MW output power.
Źródło:
Polish Maritime Research; 2009, 1; 47-52
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the possible increasing of efficiency of ship power plant with the system combined of marine diesel engine, gas turbine and steam turbine in case of main engine cooperation with the gas turbine fed in parallel and the steam turbine
Autorzy:
Dzida, M.
Mucharski, J.
Powiązania:
https://bibliotekanauki.pl/articles/258706.pdf
Data publikacji:
2009
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
marine power plants
combined systems
piston internal combustion engines
gas turbine
steam turbine
Opis:
The article presents a concept of a combined large-power ship propulsion system, composed of the leading internal combustion main engine associated with a power gas turbine and the steam turbine system, both utilising the energy taken from the main engine exhaust gas. In the examined variant the power turbine, arranged in parallel with a turbocharger, is fed with the exhaust gas from the exhaust manifold. A calculation algorithm is presented, along with sample calculations for particular subsystems: supercharging, gas power turbine, and steam turbine system. Assumptions were formulated for the calculations, and were complemented by the adopted limits. Selected system parameters were confronted with the experimental investigations available in the literature. The performed power optimisation of the entire combined marine power plant took only into account the thermodynamic point of view, leaving aside technical and economic aspects. The numerical calculations were performed for the 52 MW low-speed marine diesel engine.
Źródło:
Polish Maritime Research; 2009, 2; 40-44
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary tests on a combined heat and power unit fed with gas fuels
Autorzy:
Imiołek, M.
Boruta, G.
Piętak, A.
Matijošius, J.
Powiązania:
https://bibliotekanauki.pl/articles/241591.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
heat and power cogeneration
piston combustion engine
gas fuel
Opis:
This paper presents a model unit demonstrating the possibility of using a PBCHP10VB CHP unit driven by a piston combustion engine fed with gas fuels for heat and power cogeneration. A mobile unit available in the Department enables heat and power cogeneration at any place with available gas fuel, e.g. compressed in a pressure tank or from a production and transmission system. A radiator is connected to the unit’s heat connection for demonstrative purposes – this is the simplest model of a network using the heat generated by the unit, with the possibility of easy connection to another network for heating rooms and/or tap water instead of this radiator. Any three-phase load (e.g. a single phase converter) can be connected to the unit’s power connection. A constructed mobile power generator fed with alternative gas fuels (e.g. biogas) is described which can be used in the field in a biogas system for power generation with simultaneous heat recovery. The results of the first preliminary tests on the effect of the type of gas fuel used on the obtained electrical and thermal power and on the composition of exhaust gas from the driving combustion engine are presented. A plan for further tests is also outlined.
Źródło:
Journal of KONES; 2013, 20, 4; 123-127
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of indication errors of the SI gas engine with a prechamber
Analiza bledow indykowania gazowego silnika ZI z komora wstepna
Autorzy:
Jamrozik, A.
Powiązania:
https://bibliotekanauki.pl/articles/793719.pdf
Data publikacji:
2011
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
engine
two-stage combustion system
excess air factor
indicated work
gas engine
prechamber
thermal process
internal combustion engine
spark ignition
piston engine
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A research stand for the testing of the sealing properties of the piston–rings–cylinder assembly in a combustion engine
Stanowisko do badań uszczelniającego działania układu tłok–pierścienie–cylinder silnika spalinowego
Autorzy:
Koszałka, G.
Hunicz, J.
Kordos, P.
Powiązania:
https://bibliotekanauki.pl/articles/133919.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
combustion engine
ring seal
gas blow-by
mathematical model
measuring system
silnik spalinowy
uszczelnienie pierścieniowe
przedmuchy spalin
model matematyczny
układ pomiarowy
Opis:
The paper discusses research assumptions and describes a test stand for the investigations of the sealing properties of the piston rings. The research stand includes an engine brake together with a control system, a research engine and a lubrication and engine thermal state stabilization systems. The engine was fitted with a research piston containing a measuring device enabling the recording of fast varying quantities such as the pressures in the space between the rings, axial displacements of the oil sealing rings in the piston grooves and the temperatures of the gas blown through the seal.
W artykule omówiono założenia oraz opisano zbudowane stanowisko do badania zjawisk związanych z uszczelniającym działaniem pakietu pierścieni tłokowych. Stanowisko składa się z hamulca silnikowego wraz z układem sterowania, silnika badawczego oraz układu smarowania i stabilizacji jego stanu cieplnego. Silnik wyposażony jest w tłok badawczy zawierający układ pomiarowy, umożliwiający pomiar i rejestrację szybkozmiennych wielkości, m.in. ciśnień w przestrzeniach międzypierścieniowych, osiowych przemieszczeń pierścieni uszczelniających w rowkach pierścieniowych tłoka oraz temperatur gazu przepływającego przez uszczelnienie.
Źródło:
Combustion Engines; 2013, 52, 2; 54-62
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of friction force determination method on results obtained from model of gas flow from combustion chamber to the crankcase
Autorzy:
Koszałka, G.
Niewczas, A.
Guzik, M.
Powiązania:
https://bibliotekanauki.pl/articles/245664.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engine
blowby
piston ring
friction force
mathematical model
Opis:
The paper presents investigation of the influence of the friction force calculation method on the results of simulations run with the use of the model ofgas flow from the combustion chamber to the crankcase and piston rings motion in the grooves. The first series of simulations was run using the gas flow and ring motion model in which the friction force was calculated from the empirical equation. The second series was run with the use of the gas flow and ring motion model fully integrated with the ring lubrication model. In that case the friction force was derived from the hydrodynamic model of ring lubrication. Comparison of the results obtained in the first and second series of simulations indicated that despite the fact that the friction forces calculated with these two methods differed considerably, the method of friction force calculation had insignificant effect. This refers to the ąuantities determined in the simulations which are most important from practical point of view - i.e. displacements of the rings in the grooves, pressure courses in inter-ring regions and blowby rate. It is not necessary to integrate the gas flow and ring motion model with the model of ring lubrication, and doing so to complicate it very much, if the aim of the calculations is simulation of blowby and rings behaviour in the grooves.
Źródło:
Journal of KONES; 2009, 16, 4; 223-239
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical model of piston ring sealing in combustion engine
Autorzy:
Koszałka, G.
Guzik, M
Powiązania:
https://bibliotekanauki.pl/articles/258834.pdf
Data publikacji:
2014
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
exhaust gas blow-by
displacements of rings
twisting of rings
oil film
cylinder
piston
ring
mathematical model
lubrication
Opis:
This paper presents a mathematical model of piston-rings-cylinder sealing (TPC) of a combustion engine. The developed model is an itegrated model of gas flow through gaps in TPC unit , displacements and twisting motions of piston rings in ring grooves as well as generation of oil film between ring face surfaces and cylinder liner. Thermal deformations and wear of TPC unit elements as well as heat exchange between flowing gas and surrounding walls , were taken into account in the model. The paper contains descriptions of: assumptions used for developing the model , the model itself, its numerical solution as well as its computer application for carrying out simulation tests.
Źródło:
Polish Maritime Research; 2014, 4; 66-78
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological indicators of the perkins 1104D-e44TA engine after its adaptation for being powered with natural gas and diesel fuel
Autorzy:
Kurczyński, D.
Łagowski, P.
Warianek, M.
Powiązania:
https://bibliotekanauki.pl/articles/244009.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
piston combustion engines
engine fuels
harmful exhaust gases components
bi-fuelling
natural gas
experimental tests
Opis:
The contemporary progress of automotive industry and transportation is determined to a large extent by the increasing environmental requirements, aimed at limiting the harmful impact of vehicles upon human life and people’s health. A crucial issue linked with operating vehicles is the exhaust gases generated by internal combustion engines. In order to reduce this hazardous impact upon the natural environment, the construction of the engines is continuously improved, electronic controlling is being developed for managing the course of working processes taking place in cylinders and auxiliary systems, exhaust gases cleaning systems are being developed, alternative fuels are being sought for and the possibilities of their optimal use are being examined. Natural gas is the fuel that is highly expected and hoped to be used more widely for powering internal combustion engines in vehicles. This article presents the values of selected ecological indicators of the Perkins 1104D-E44TA Diesel engine, powered by compressed natural gas and Diesel fuel (CNG + ON). For comparison reasons, the engine was powered with both fuels at the same time and then only by Diesel fuel (ON) in the same working conditions. Before the tests, the powering system control unit had been calibrated so as to enable obtaining similar values of torque while the engine was powered with the Diesel fuel only and with both CNG and ON while working with external speed characteristics; the calibration was also set up to allow for the maximum share of the natural gas in the total fuel amount supplied into the engine cylinders without engine knocking. When powering the engine with both CNG and Diesel fuel, the concentration levels of nitric oxides and carbon dioxide in exhaust gases were lower. However, the total content of hydrocarbons in the exhaust gases grew multiple times, and the content of the carbon monoxide was significantly increased. In addition, the obtained measurement results of the smokiness of the exhaust gases and the content of the soot with the engine powered with two fuels were not satisfactory.
Źródło:
Journal of KONES; 2017, 24, 3; 143-150
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Piston engine monitoring system - efficient option in Air Training and Education Centre
Monitorowanie silnika tłokowego w instytucji szkoleniowej dla pilotów na lotnisku Horný Hričov
Autorzy:
Mrázová, M.
Jirků, P.
Powiązania:
https://bibliotekanauki.pl/articles/212696.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
piston engine
Enhaust Gas Temperature
Cylinder Head Temperature
silnik tłokowy samolotu
temperatura gazów spalinowych
temperatura głowy cylindrów
Opis:
This paper describes the process of Walter M337 AK engine monitoring in operation of Air Training and Education Centre. We accomplished measurements of selected aircraft engines by EDM-800 monitoring system which uses the most advanced microprocessor technology for monitoring critical engine parameters, such as cylinder head temperature and exhaust gas temperature. These measurements will help us to increase economy of the aircraft and its operation's reliability. The EDM-800 monitoring system improves the aircraft maintenance at Air Training and Education Centre of the University of Zilina allowing to determine and localise malfunctioning components of M337 piston engines.
Artykuł opisuje proces monitorowania silnika Walter M337 AK w instytucji szkoleniowej dla pilotów na lotnisku Horny Hrićov. Wykonaliśmy pomiary wybranych silników lotniczych przez EDM-800 system monitoringu, który wykorzystuje najbardziej zaawansowaną technologię mikroprocesorową do monitorowania krytycznych parametrów silnika, takich jak temperatura głowicy i temperatury spalin. Osiągnięte wyniki pomogą nam zwiększyć ekonomiczność samolotu i jego niezawodność. System monitorowania EDM-800 poprawia obsługę techniczną statku powietrznego w Instytucji Lotnictwa Uniwersytetu w Żylinie pozwalając na określenie i zlokalizowanie uszkodzonych elementów silników M337.
Źródło:
Prace Instytutu Lotnictwa; 2016, 1 (242); 94-100
0509-6669
2300-5408
Pojawia się w:
Prace Instytutu Lotnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 23

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