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Wyświetlanie 1-8 z 8
Tytuł:
Compressed natural gas as motor fuel: possibilities, problems and solutions
Autorzy:
Makarova, I.
Shubenkova, K.
Sadygova, G.
Powiązania:
https://bibliotekanauki.pl/articles/263134.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
gas-cylinder vehicles
natural gas fuel
service center
simulation model
gaz ziemny
paliwo
butla gazowa
pojazd
model
symulacja
Opis:
The article is devoted to the increase of the cargo vehicles market on the gas-engine fuel. The article considers the relevance of the use of the alternative types of transport’s fuels. As potential energy carriers for internal combustion engines, gas engine fuels are considered. Prospects and problems of using natural gas as motor fuel, as well as ecological and economic aspects of the use of compressed natural gas as fuel for vehicles are presented. Prospects for expanding the market for trucks powered by gas engine fuel are discussed, as well as the advantages of using natural gas as a safe, environmentally friendly and economical type of alternative fuel are considered. It is shown that the main obstacle to the expansion of the gas engine vehicles’ market is the underdevelopment of the infrastructure: filling stations and service centres. The organization of gas-cylinder vehicles (GCV) servicing is considered. The authors have developed an imitation model that allows determining the optimal number of repair stations for the service centre, as well as software for forecasting the required number of automobile gas filling compressor stations (AGFCS).
Źródło:
Archiwum Motoryzacji; 2018, 82, 4; 43-62
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multiterminal cylinder pressure monitoring-diagnostic system of natural gas motor compressors of GMVH type in Krio Odolanów
Autorzy:
Kłos, M.
Łutowicz, M.
Polanowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/246934.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
cylinder pressure monitoring system
natural gas motor compressors
Opis:
The paper characterises the current state of development and use of equipment and monitoring-diagnostic systems of engine cylinders and reciprocating compressors. It has presented a prototype system for monitoring and diagnostics of motor compressors of GMVH type natural gas installed in the Krio Company in Odolanów. The system monitors on-line 5 stands of motor compressors. Simultaneously 12 engine cylinders and 6 compressor cylinders of each motor compressor are indicated - a total of 90 cylinders. Driven by the need to reduce the number of monitors in the control room, aprinciple to operate the system through one monitor with the capability of immediate switching-off of a monitored motor compressor has been adopted. A charts menu provides for simultaneous on-line observation of the work of all the cylinders of a selected motor compressor. For each cylinder of both engine and compressor, against the background of the average from 16 runs and average for the cylinder's unit there are presented a few indicator diagrams, which allows for observation of the variability of a cylinder 's work, which in a spark-ignition engines can be significant. Values of main parameters ofthe cylinder's work are presented in tables and bar charts. These include: the maximum pressure of combustion and compression as well as average indicated pressures. The indicated powers are determined for the engine and compressors and a mechanical efficiency of the unit. The fiber-optic "Optrand" sensors have been used for indication, mainly to meet the need of spark-safety requirements. For the measurement of pressure, 12-bit converter cards ofown construction have been applied. Values of pressure have been sampled with angle axis pulses 0.5° crankshaft rotation. Ethernet connections were applied to transfer data between the pumping station and control room. The study characterises the main conclusions arising from past experience of system use.
Źródło:
Journal of KONES; 2010, 17, 2; 195-202
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
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:
Optimizing Natural Gas Fueling Station Reservoirs Pressure Based on Ideal Gas Model
Autorzy:
Farzaneh-Gord, M.
Deymi-Dashtebayaz, M.
Powiązania:
https://bibliotekanauki.pl/articles/779242.pdf
Data publikacji:
2013
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
compressed natural gas
CNG cylinder
fast filling process
Cascade Reservoirs
thermodynamic analysis
entropy generation
Opis:
At CNG fuelling station, natural gas is usually stored in a cascade storage system to utilize the station more efficient. The cascade storage system is generally divided into three reservoirs, commonly termed low, medium and high-pressure reservoirs. The pressures within these three reservoirs have huge effects on the performance of a CNG fuelling station and a fast filling process of natural gas vehicle’s (NGV) cylinder. A theoretical analysis is developed to study the effects of the reservoirs pressures and temperatures on the performance of the CNG station. The analysis is based on the first and the second law of thermodynamics, conservation of mass and ideal gas assumptions. The results show that as the reservoir temperature decreases, the fill ratio increases and the pressure within the filling station reservoirs has no effects on the fill ratio. The non-dimensional entropy generation and filling time profiles have opposite trends and as entropy generation decreases, the filling time increases. The optimized non-dimensional low and medium pressure-reservoir pressures are found to be as 0.24 and 0.58 respectively in thermodynamic point of view.
Źródło:
Polish Journal of Chemical Technology; 2013, 15, 1; 88-96
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
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
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:
Marine diesels working cycle monitoring on the base of IMES GmbH pressure sensors data
Autorzy:
Neumann, Stefan
Varbanets, Roman
Kyrylash, Olena
Maulevych, Vladyslav
Yeryganov, Oleksiy
Powiązania:
https://bibliotekanauki.pl/articles/327592.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
diesel engine
cylinder pressure monitoring
top dead center
gas pressure sensor
Butterworth low-pass filter
mean indicated pressure
indicator valve channel
silnik spalinowy
czujnik ciśnienia
monitorowanie
wydajność
Opis:
The paper presents algorithms for marine diesel engines’ working process monitoring designed by analyzing data obtained with IMES pressure sensors. Main features and properties of IMES sensors, used for 2- and 4-stroke modern marine diesel engines, are presented here. The pressure-time diagrams were taken as a basis for creating algorithms for marine diesel engines’ working process monitoring. The task of preliminary calculation of top dead center position (TDC) of a cylinder was solved using polytropic compression equation. TDC position was calculated using the equation P' = 0. Then algorithm for calculating the average indicator pressure and the indicator power of the cylinder has been determined. The CFD methods show how indicator valve channel influences the results of marine diesel engines’ working process monitoring. With the example of compression curves in a cylinder, it’s shown amplitude and phase distortions introduced into pressure measurements by the indicator valve channel. Such research work is important and actual in time due to the use of marine diesel portable performance analysis systems.
Źródło:
Diagnostyka; 2019, 20, 2; 21-26
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of EGR control at in-cylinder pressure and ecological properties of CI off-road vehicle engine
Autorzy:
Bieniek, A.
Mamala, J.
Graba, M.
Hennek, K.
Powiązania:
https://bibliotekanauki.pl/articles/133493.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
exhaust gas recirculation
in-cylinder pressure
mass fraction burning
differential pressure
nitrogen oxides
NOx
particulate matter
PM
recyrkulacja spalin
ciśnienie w cylindrze
spalanie frakcji masowej
różnica ciśnień
tlenki azotu
cząstki stałe
Opis:
An attempt has been made to clarify the effect of wide-ranging control of the exhaust gas recirculation system on the cylinder pressure and ecological engine performance. This publication contains the results of tests performed on the CI (compression ignition) engine of the off-road vehicle mounted on the test bench. The study was based on advanced EGR control with a proportional valve and a very efficient exhaust gases cooling system. Analysis of the test results is based on the cylinder pressure and the concentration of NOx and PM components at exhaust gases. The study included the influence of the exhaust gas recirculation system control on parameters such as differential pressure, MBF, and relative NOx and PM emissions. As demonstrated by the analysis conducted, the EGR valve control method and the exhaust gas cooling intensity significantly affect the cylinder pressure and its ecological performance.
Źródło:
Combustion Engines; 2017, 56, 3; 88-95
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-8 z 8

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