Wszystkie pola: type P - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Blade-type piston compressor investigation of seals
Autorzy:: Kalina, P.
Chomczyk, W.
Irzycki, A.
Snopkiewicz, K.
Powiązania:: https://bibliotekanauki.pl/articles/246203.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: piston machines
piston compressor
seals testing
Opis:: The paper presents the test results of selected seals applied in the blade-type piston compressor designed and realized in Propulsion Department of Institute of Aviation according to Patent No 6822 specification. Principle of operation of the compressor and the construction of test stand utilized to the seals testing were presented in the paper published in the Journal of KONES 2009. The special blade-type piston realizes a pendulous movement in the circular cylinder divided into two bulkheads. Each of bulkheads, fitted out with a set of bidirectional operating valves, creates by sequential opening and closing of them two compression chambers for one blade. Comprehensive tests of different kinds of seals were carried out on a single-compression machine driven by pneumatic actuator. The pressure rise vs. blade movement and drop of pressure when the piston was stayed at top dead centre were measured. The results of leak tightness of other structures of blade-type piston were analyzed as well and are subject to the following paper. The new design of piston relied on fitting-out of piston with side disc was prepared with intention of eliminating the loss of usable pressure in compression chamber, especially in area of top dead centre. The proposed design eliminated the leaks on the drive shaft and lateral seals, but not on the cylindrical surface of disco.
Źródło:: Journal of KONES; 2010, 17, 1; 199-204
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Stereovision 3D type workspace mapping system architecture for transport devices
Autorzy:: Szpytko, J.
Hyla, P.
Powiązania:: https://bibliotekanauki.pl/articles/246263.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: stereovision
computer vision
work space mapping
Opis:: One of the effects of the exponential growth universally available computing power is decrease of the hardware cost especially multimedia components. This trend combined with integration of image acquisition hardware for multimedia applications for personal computers, enable to create new kind of vision systems - stereovision. The system presented on this paper using two synchronized cameras with USB type interface. In order to obtain an exact copy of the object in 3D type space is necessary to gather the Information about projected points of the space onto the more than one image. The paper is focus on double camera stereovision system and calibration problem with image rectification. The target was achieved with use open source Computer Vision libraries and toolboxes. Practical implementation of presented basic stereovision system (based on two cameras) is addressed for transportation devices which are operating in fixed 3D type space and include for example: device movement trajectory controlling, possible events detecting and worh space of materia handling devices modeling. Paper contains the following key chapters: cameras calibration problem short discussion, single camera calibration approach, and stereovision system architecture and calibration approach.
Źródło:: Journal of KONES; 2010, 17, 4; 495-503
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Issues during assembly new type of electric brake prototype and initial tests of individual components
Autorzy:: Grygorcewicz, P.
Powiązania:: https://bibliotekanauki.pl/articles/245104.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: assembly
electric brake
prototype
mounting
new designing
Opis:: In this article, the author focused on the two main issues. Firstly, the assembly phase of the new type of electric brake prototype was described and secondly author introduced the initial tests of individual components. The assembly phase of the new prototype of the electric brake was very significant. In this stage, the parts were fitted and mounted. The new functionality of new type prototype was checked and the designing was verified. If there were some mounting problems this was proper time to correct the dimensions and exchange parts. Sometimes the materials or even or heat treatment of some part were exchanged. In that kind of prototype, it was really important to check electric parts like motors during the load. The most important issue was to find the best solution. The motors weight should have been as small as possible and the nominal torque should have been enough for normal working of prototype. In the initial tests of individual components, the real parameters were tested and possibility of using the parts was checked too. During designing phase, the parameters were defined and the tests results gave the answers for the possibility of real working on the object. The most important parameters there were the motors parameters and the possibility of mechanism force transmission.
Źródło:: Journal of KONES; 2018, 25, 3; 213-218
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The influence of multi - role aircraft mission type on the low bypass engine performance parameters
Autorzy:: Wygonik, P.
Powiązania:: https://bibliotekanauki.pl/articles/242065.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: gas turbine engine design
airplane-engine integration
aircraft mission optimization
Opis:: The aim of the article is to find the relationship and dependencies between the mission parameters of the multi-role aircraft (altitude, flight velocity, thrust load) and the parameters that define the flow of the turbofan engine. The conclusions of these studies are relevant at the stage of preliminary engine design. There was built the model of thermal cycle of low bypass. The model of an airplane was simplified to its aerodynamic characteristics. The mission was divided into air tasks (stages) such as a take-off, a climb at a certain velocity, sub and supersonic flight and maneuvers (i.e. turn). Dimensionless energy criteria binding both the engine and aircraft parameters were introduced. There were conducted the simulation studies of the model airplane-engine mission to show the part of the mission that "dimensions " the engine. The results were limited to the presentation of the impact of circuit parameters such as T3, π, μ on the defined criteria. The calculations were carried out for a number of selected missions defined in the literature as Loll, HiLoHi and HiHiHi. The comparison of the energy requirements of these missions was done. There were pointed out these criteria of the mission evaluation that may affect making decisions at early design stages. There were designated the areas of design variability in an engine meeting the criteria for energy mission. The advantage of this model is universal character of dimensionless criteria, whereas the disadvantage is the need to build complex models of the engine and the assumption at the outset aerodynamic characteristics of the aircraft. The originality of the presented solution is to show an alternative, unconventional approach to the design process (not as so far) the engine itself but the entire aviation system.
Źródło:: Journal of KONES; 2013, 20, 3; 435-442
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Adoption of the time resolved fluorescence to oil type identification
Autorzy:: Baszanowska, E.
Otremba, Z.
Rohde, P.
Zieliński, O.
Powiązania:: https://bibliotekanauki.pl/articles/247122.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: oil
fuels
lubricants
aquatic environment protection
time-resolved fluorescence
diagnostics
Opis:: The present development of a basic science, including physics of stimulated emission of light, opens up new diagnostic possibilities in relation to the quality of oils, including marine fuels and lubricants. In complicated chemical composition of oils both light absorbing compounds and compounds that emit light (fluorescent) are included. This causes the formation of complex structures in the spectral plots of fluorescence intensity as a function of wavelength of light exciting fluorescence and as a function of the wavelength of light emitted. Since the fluorescence excitation occurs in a short time of its disappearance. The shape of the fluorescence decay function depends on the chemical composition of oil, therefore, includes a mention of its kind, quality, level of degradation, and the like. In this paper exemplary charts of the intensity decay curves in different parts of the fluorescence spectra are shown (for light fuel). Presented charts are obtained using the experimental device constructed in Bremerhaven University of Applied Sciences (Germany) and are the attempt to use ability of oil substance to manifest its composition in the form of the fluorescence decay curve. An analysis of the chart shows that decay of fluorescence in this case is described by biexponential curve, therefore a kind of oil can be represented by two numerical values - two decay time constants. Operational use of this method will be possible only after a comparative study of different types and quality of oil in relation to the shape of the fluorescence decay curves.
Źródło:: Journal of KONES; 2011, 18, 2; 25-29
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Material handling devices operation enyironment 3D-type presentation based on laser scanning systems
Autorzy:: Szpytko, J.
Hyla, P.
Powiązania:: https://bibliotekanauki.pl/articles/247494.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: point of cloud
laser scanning system
and material handling devices
Opis:: The paper is focusing on the material handling devices operation environment 3D-type presentation based on laser scanning systems and point of cloud data approach. Main attention was fixed at overhead travelling cranes and their operation space zone with determined and random character factor influences the workspace spatial volume. Supervising the transport means workspace get possibility mark out the optimum grade-separated trajectory for transferring cargo in automatic mode. On the base 3D type seans was generated digital model of the plant/laboratory hall, where crane has been installed. In the next step the same laboratory hall and their characteristic points was measure with the help geodetic device and compare with laser scanning data. Other part of the paper is presenting a methodology for 3D type object scanning with use surface segmentation for reduce the number of points given by the industrial scan objects like a hall where an overhead travelling crane is operating. This procedure replace traditional 3D type scanner rotation mode with the planar mode of scanning. In this case the laser beam examines the object only in one direction, it is ideal for scan the workspacefor the transport means with Cartesian operation environment and opens kinematics chain.
Źródło:: Journal of KONES; 2010, 17, 2; 451-458
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Effect to the fuel system type on energy, economic and environmental indicators of the spark-ignition engine work
Autorzy:: Ambrozik, A.
Ambrozik, T.
Kurczyński, D.
Łagowski, P.
Jankowski, R.
Kowalczyk, W.
Powiązania:: https://bibliotekanauki.pl/articles/245062.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: vehicles
combustion engines
fuel supply system
emission of exhaust gases
Opis:: The paper presents selected results of tests on the Fiat Panda I car powered by 1.2 dm3 spark ignition engine. The engine had production installed fuel system with the single-point petrol injection. To improve its in-service performance, the engine was fitted with the multi-point injection fuel system. The assessment of the indicators of the work of the engine, fitted with single-point, or alternatively, multi-point injection fuel system, was conducted on the basis of the tests performed on the MAHA chassis dynamometer. First, tests were run for single-point injection fuel system. Next, the same tests were performed when the engine was fitted with the multi-point injection fuel system. In the tests, engine power, torque, fuel consumption and the concentrations of the exhaust gas components were measured. The latter included carbon monoxide CO, carbon dioxide C02, hydrocarbons HC, nitrogen oxides NOx, and oxygen 02. AVL Digas 4000 exhaust gas analyser was used to take measurements of the concentrations of the basic components of the exhaust gas and of the excess air ratio %u03BB. The investigations were conducted by performing the inertia test and by using the dynamometer to determine the basic indicators of the engine operation. In the investigations, the crankshaft rotational speed ranged from 1500 to 6500 rpm with 500 rpm step. The experimental results made it possible to evaluate how the manner and site of fuel delivery affect the engine -work indicators.
Źródło:: Journal of KONES; 2014, 21, 3; 7-14
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Conformity inspections of the installation method of the system adapting a given vehicle type to run on LPG
Kontrole zgodności sposobu montażu instalacji przystosowującej dany typ pojazdu do zasilania gazem propan-butan (LPG)
Autorzy:: Maj, M.
Wiśniewski, D. P.
Mystkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/244171.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: kontrole
świadectwo homologacji
gaz LPG
Regulamin EKG ONZ
controls
Approval Certification
liquefied petroleum gas
UN ECE Regulation
Opis:: The paper presents procedures related to obtaining type approval certification for the installation method of the system adapting a given vehicle type to be powered by LPG and reviews current legislation concerning it. There is also some important information published, regarding installation of the vehicle CNG supply system, and methods of the gas storages. There are admissible values of the exhaust fumes pollutants emission content (emission standards EURO) presented in a tabulated form for comparison and also the information on the elements of LPG supply systems, whose installation on the vehicles is obligatory in order to meet the 67.01. UN-ECE Regulation requirements. Later on the paper presents, in the tabulated form, the number of conformity inspections of the installation method of the system adapting the given vehicle type to be powered by LPG, carried out by the Quality Control Department, and also most important physico-chemical properties offuels as like: CNG, diesel oil, petrol and LPG. At the same time, the essential conclusions are published, of the inspections carried out by Quality Control Department in the establishments dealing with the LPG systems installations, together with the analysis of the discrepancies observed during the inspections. Additionally there is a list of some possible consequences of an improper gas system installation. In the summery of the paper, there is a reference made to the UN-ECE Nr 115 Regulation, whose introduction could regulate the market of the vehicle LPG systems. But to make it binding, all states have to adopt it to their legislations. The most important changes, affecting the parties installing the vehicle LPG systems, that are introduced by the Nr 115 Regulation, are related to obtaining the type approval, as it will be necessary to have gas system type approval certification linked with a particular engine type of a given motor vehicle, i.e. a dedicated system. Obtaining type approval necessitates in the need to meet more stringent technical requirements than the current ones. New type approvals will concern only a narrow group of vehicle, as even within one vehicle make, there will be several type approval certificates.
W artykule opisano procedury związane z uzyskaniem świadectwa homologacji sposobu montażu instalacji przystosowującej dany typ pojazdu do zasilania gazem LPG (propan-butan), dokonano przeglądu obecnie obowiązujących aktów prawnych w omawianym zakresie. Zamieszczono także kilka istotnych informacji nt. instalacji zasilania pojazdów gazem ziemnym CNG (Compressed Natural Gas) oraz sposoby jego magazynowania. W formie tabelarycznej zamieszczono i porównano dopuszczalne wartości emisji składu substancji zanieczyszczających spaliny (normy emisji EURO), a także zamieszczono informacje nt. elementów instalacji gazowych LPG, które obowiązkowo muszą być zamontowane w pojazdach, tak aby spełnione zostały wymagania Regulaminu EKG ONZ Nr 67.01. W dalszej części pracy zaprezentowano w formie wykresu ilość przeprowadzonych przez Zakład Kontroli Jakości kontroli zgodności sposobu montażu instalacji przystosowującej dany typ pojazdu do zasilania gazem LPG, oraz pokazano najważniejsze właściwości fizyko-chemiczne paliw takich jak gaz ziemny, olej napędowy, benzyna i gaz propan-butan. Jednocześnie zaprezentowano najważniejsze wnioski z kontroli przeprowadzonych przez ZKJ w zakładach zajmujących się montażem instalacji LPG, a także przeprowadzono analizę zauważonych podczas kontroli niezgodności. Ponadto przedstawiono w punktach, niektóre następstwa nieprawidłowego montażu instalacji gazowych. W podsumowaniu referatu odniesiono się także do Regulaminu EKG ONZ Nr 115, którego wejście w życie mogłoby uporządkować rynek samochodach instalacji gazowych LPG. Aby Regulamin 115 miał moc wiążącą, poszczególne kraje muszą wprowadzić go do swojego prawodawstwa. Najważniejsze zmiany dla instalatorów samochodowych instalacji LPG, jakie wprowadza Regulamin 115, wiążą się z uzyskaniem homologacji, bowiem zgodnie z Regulaminem 115, trzeba będzie posiadać świadectwo homologacji na instalacje gazowe w połączeniu z określonymi typami silnika w konkretnym typie pojazdu, a więc dedykowane systemy. Uzyskanie homologacji wiąże się z koniecznością spełnienia bardziej restrykcyjnych od obecnych warunków technicznych. Nowe homologacje dotyczą tylko wąskiej grupy pojazdów, gdyż w ramach nawet jednej marki funkcjonować będzie kilkanaście różnych świadectw.
Źródło:: Journal of KONES; 2008, 15, 2; 277-285
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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