Autor: Smieja, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Information systems safety in a context of autmotive applications
Autorzy:: Śmieja, M.
Rygiewicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/243016.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: data safety
motion sensor
system of digital tachograph
Opis:: Strong expansion of IT tools in area of management and control of systems and devices of road transport is connected inseparably with a need of assurance of proper level of credibility and data safety. In paper one related to issues connected with threatens and ways of their reduction in a context of selected law regulation and analysis obtained during studies on modern motion sensor applied in system of digital tachograph in vehicles from delivery trucks and buses group. Departures from assumed scheme of information flow in vehicle can result from random interfering environmental factors as well as , action taken deliberately for specific purpose, as change of object's operation (e.g. tuning of power transmission system), or illicit modification of data subjected to revision by institutions obligated to control of vehicle. Presented in the paper example of threads and methods of information protection are part of the whole system of defined threats and securities necessary to obtain applied certificates granted by selected institutions such as BSI (Bundesamt für Sicherheit in der Informationstechnik) and development of so called PPprotection profile. In summary there are also pointed another ways to enhance a security level of described system such as e.g. redundancy in acquiring and transmission of data.
Źródło:: Journal of KONES; 2012, 19, 4; 565-570
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Preliminary tests on an integrated laboratory control system for the feeding system of a dual - fuel diesel engine and its load
Autorzy:: Wierzbicki, S.
Śmieja, M.
Piętak, A.
Powiązania:: https://bibliotekanauki.pl/articles/244419.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: CI engine
engine test bed
CR system
control system
combustion engine tests
Opis:: Comprehensive testing of diesel engines currently requires not only a control system for the feeding system of the engine, but also a system ensuring precise control of its load and providing constant measurement conditions. Additionally, it is necessary during the tests to record a considerable number of operating parameters of both the engine and the loading system. The currently available stands for diesel engine tests, the so-called “engine test beds”, are standardly-equipped with special systems controlled using computer applications to ensure the maintenance of the assumed engine operation parameters. For compression-ignition engines, this most often takes place by control of the accelerator pedal position. In this solution, the engine is controlled by the engine controller, which controls the fuel charge based on the measurement of the rotational speed and the accelerator pedal position depending on the assumed control algorithm. The shortcoming of this solution is no possibility of controlling selected fuel feeding parameters, such as fuel pressure or the injection advance angle. This paper presents preliminary tests on an integrated control system for both engine load and the parameters of fuel fed to a compression-ignition engine. The developed control system enables engine test bed control, which, depending on the measurement variant, ensures the maintenance of a constant rotational speed or a constant engine load as well as control of the Common Rail system actuators.
Źródło:: Journal of KONES; 2013, 20, 2; 393-399
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Wykorzystanie sieci komunikacyjnych w aspekcie rozwoju systemów diagnostycznych pojazdów mechanicznych
Application of communication nets in aspect of development of modern systems of car diagnostics
Autorzy:: Śmieja, M.
Piętak, A.
Imiołek, M.
Wierzbicki, S.
Powiązania:: https://bibliotekanauki.pl/articles/208645.pdf
Data publikacji:: 2011
Wydawca:: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:: sieci wymiany danych
CAN
OBD
diagnostyka
network area
diagnostics
Opis:: Rozwój konstrukcji pojazdów samochodowych podyktowany wzrastającymi wymaganiami w stosunku do emisji związków toksycznych oraz poprawy bezpieczeństwa oznacza coraz większą złożoność układów odpowiedzialnych za sterowanie i diagnostykę. Przepływ dużych ilości danych pomiędzy poszczególnymi elementami tych systemów wymusza stosowanie sieci o coraz większej przepustowości i niezawodności. Różnorodny charakter przesyłanych informacji wiąże się z koniecznością dostosowania sposobu transmisji do konkretnych zastosowań. Najistotniejsze właściwości wykorzystywanych protokołów sieciowych, takie jak maksymalne szybkości transmisji, sposób jej inicjacji czy stopień determinizmu czasowego, decydują m.in. o ich przydatności dla efektywnej diagnostyki. Przyjęcie międzynarodowych regulacji prawnych obowiązujących producentów pojazdów takich jak OBD II w zakresie bieżącej i okresowej kontroli stanu technicznego pojazdów obejmuje wymagania i standardy dotyczące przesyłania informacji diagnostycznej. Konsekwencją ciągłego rozwoju motoryzacji są również działania w kierunku traktowania samochodu jako elementu większej struktury niezawodnościowej, możliwej do osiągnięcia dzięki coraz dostępniejszym metodom komunikacji między pojazdem a jego otoczeniem.
The development of modern cars is caused by the ever increasing demand to reduce toxic emission as well as to improve safety. This means that the systems responsible for diagnostics and controlling are becoming more and more complex. The flow of huge amounts of data between particular elements of these systems forces application of nets with greater capacity and increased reliability. Heterogeneous character of carried information is connected with the necessity to fit a type of transmission for a specific use. The most significant features of the used net protocols such as maximum speed, the way of triggering and the degree of time determinism, are the factors which decide about their helpfulness for effective diagnostics. Adoption of international regulations, obligatory for manufactures of cars such as OBDII ones, in the field of current and periodical checks on the technical state of cars, include demands and standards concerning the carrying of diagnostic information. The subsequent effect of such continual developments in motorisation is activity connected with treating a car as an element of a much wider reliability structure. This is possible to achieve thanks to more and more common methods of communication between a car and its environment.
Źródło:: Biuletyn Wojskowej Akademii Technicznej; 2011, 60, 1; 231-241
1234-5865
Pojawia się w:: Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Choice of a pilot dose in dual fuel self-ignition engine of a generator, depending on its load
Autorzy:: Imiołek, M.
Piętak, A.
Śmieja, M.
Wierzbicki, S.
Powiązania:: https://bibliotekanauki.pl/articles/247241.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
gas engine
dual fuel powering
CNG
Opis:: One of the basic problems concerning dual fuel powering of self-ignition engines is to determine the minimal dose of diesel oil injected into the combustion chamber in order to trigger self-ignition. Most research conducted to date on double-fuel powering self-ignition has been carried out on engines with mechanical injection systems, which does not ensure the possibility of obtaining very small diesel oil doses initiating self-ignition. The original system of fuelling the engine with diesel oil was replaced with a laboratory Common Rail system. The basic parameters of injector operation were controlled by a specially-developed system ensuring continuous choice of parameters of injector operation. The examined engine was fitted with a prototypical system of methane-air fuelling and a system for controlling and adjusting the supplied dose of methane This study presents the results of research aiming at determining the pilot dose injected into the combustion chamber of the engine to ensure the course of combustion in the engine operating under various loads. The results presented in the paper concern tests of a single-cylinder self-ignition engine, HATZ 1B40, operating in a generator adopted for CNG fuelling.
Źródło:: Journal of KONES; 2011, 18, 4; 129-136
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Effect of pilot charge size and biogas composition on the operating efficiency of a dual-fuel compression-ignition engine
Autorzy:: Wierzbicki, S.
Śmieja, M.
Mikulski, M.
Piętak, A.
Powiązania:: https://bibliotekanauki.pl/articles/243597.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: CI engine
biogas
dual-fuel engine
pilot dose
efficiency of engine
Opis:: Reduction of greenhouse gases emissions into the atmosphere, as well as increasing the share of renewables in the overall energy balance, forces the search for new, alternative energy sources. One of the fuels, which presents high potential for combustion engines are biomethane or biogas, with methane as the main flammable component. Biogas can be obtained from different products and using a variety of technologies which results in its wide availability and relatively easy manufacture. The largest sources of biogas can be animal farms or sewage treatment plants and waste dumps in which significant quantities of biogas are obtained as a result of naturally occurring processes. Biogas can also be obtained from processing of energy crops or waste processing in agricultural, food and meat processing plants. In this article, the possibility of using biogas as a fuel for CI engines has been examined. In such engine, combustion of biogas (methane) requires the use of dual fuel supply system, in which in addition to methane, liquid fuel is injected into the combustion chamber, in order to initiate the self-ignition of gaseous fuel. The paper presents exemplary results of the impact of the proportion of different fuels and biogas composition on the efficiency of the engine work cycle.
Źródło:: Journal of KONES; 2014, 21, 3; 279-284
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Experimental tests on a dual fuel compression-ignition engine powered by biogas with a varying chemical composition
Autorzy:: Wierzbicki, S.
Śmieja, M.
Kozłowski, M.
Nieoczym, A.
Krzysiak, Z.
Powiązania:: https://bibliotekanauki.pl/articles/247546.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: biogas
dual fuel compression-ignition engine
emission of toxic compounds
Opis:: Biogas is among the fuels whose significance in the general energy balance will increase. These results from the fact that it may be produced from various kinds of waste materials, and it is therefore considered a renewable fuel of the second generation. Because of its properties, biogas may be used directly to power spark-ignition engines. Nonetheless, numerous tests are underway involving the possibility of using biogas to power compression-ignition engines. In order to use biogas, whose main combustible component is methane, in compression-ignition engines, it is necessary to use a dual fuel power supply system. With such a system supplying power to the engine, the gas and air mixture in the cylinder is ignited by a small dose of liquid fuel. This paper presents a fragment of the research on the use of biogas with a varying chemical composition for powering compression-ignition engines. The described tests were conducted using a one-cylinder compressionignition engine mounted on an engine test stand. The fuel gas consisted of a mixture of natural gas and carbon dioxide; the share of each individual component was regulated from the station, which controlled the operation of the whole test stand. The developed control system also enabled the adjustment of the operating parameters of the engine test stand and the parameters of the injection of liquid fuel, such as the injection pressure, the timing angle of injection and the size of the dose. The results presented in the paper show the impact of the individual control parameters of the engine on the value of the engine’s torque and the amount of toxic compounds in the exhaust fumes.
Źródło:: Journal of KONES; 2016, 23, 3; 549-554
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Objectification of Diagnostic Symptoms in Examination of Nervous System Damage by Static Interactions and Kinematic Parameters of Ankle Joint
Autorzy:: Nitkiewicz, Sz.
Śmieja, M.
Gogolewski, T.
Majchrowski, A.
Grabarczyk, Ł.
Maksymowicz, W.
Powiązania:: https://bibliotekanauki.pl/articles/1197514.pdf
Data publikacji:: 2014-04
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 87.85.G-
87.85.Ox
87.85.Tu
Opis:: Current diagnostics of patients' condition as well as assumed effects of the used medical diagnostic methods are a significant part of every medical treatment. The process of continuous gathering experience and comparing it with current knowledge leads to development of medical sciences and still growing effectiveness in practice. Numerous relations between particular human body systems and their interactions are very important for fast and precise diagnosis. In the paper, evaluation of the effects of neurosurgical procedures expressed as improvement of mechanical parameters of skeleton muscle system have been considered. The approach presented in the paper assumes description of results in terms of common physical units.
Źródło:: Acta Physica Polonica A; 2014, 125, 4A; A-27-A-30
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

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