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    Wyświetlanie 1-8 z 8
    Tytuł:
    Faults of buses and coaches in the aspects of securing safety in road traffic
    Autorzy:
    Filipczyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/246512.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    road transport
    road traffic
    buses
    technical conditions
    Opis:
    The safety of buses in road traffic is very important because of potential hazards of peoples' life and health, damage and loss of freight and high costs of crash effects. The technical state of all vehicles has been examined during required periodical inspections, but in spite of this, the technical conditions of large number of vehicles have been poor. The range of inspections and their frequency have been determined according to the law of each country. The methodology and frequency has been determined in accordance with domestic legislation. The methodology of technical inspections concerns only some important systems of vehicles but not all. For example, anti-lock systems, retarders, adaptive cruise control systems, speed limitation devices etc. have not been examined. The results of examinations of 120 buses and coaches have been presented in this paper. Tests were carried out in scope of securing safety in road traffic. The methodology of compulsory periodical inspections was applied during initial tests. Vehicles were examined on typical control stands and in road tests. A special methodology for road tests for coaches with anti-lock systems was elaborated. Additional checks were carried out in cases when the results of basic tests were unsatisfactory. More than 50 vehicles of the total number of examined buses were faulty.
    Źródło:
    Journal of KONES; 2012, 19, 3; 111-116
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The reduction of diagnostic information in evolution condition machine
    Autorzy:
    Tylicki, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/359070.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    reduction
    technical system machine
    diagnostic parameters
    technical conditions
    algorithms
    Opis:
    In this paper author introduces problem of the reduction of diagnostic information in evolution condition machine for estimating state prognosis algorithms which are the basis for determining conclusion rules for estimating the next machine operation term and for state genesis which is the basis for rules creating of machine state estimation in the past. Automation of the investigation system of the evolution of the technical systems machines condition in which diagnosing distinguishes itself of prognose of the state and the genesis of the state requires the qualifications of the gathering of diagnostic parameters describing the change of the condition of the machine during exploitation. The results of investigations connected with the implementation of the procedures of monitoring the technical machine engines condition and their investigation for the chosen arrangements of mechanical vehicles were introduced.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 32 (104) z. 1; 115-118
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies on the influence of rotor unit unbalance on the operational parameters of a turbocharger of the NAPIER C-045 type
    Autorzy:
    Adamkiewicz, A.
    Kuropatnicki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/360167.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    turbocharger
    rotor unit
    unbalance
    operational parameters
    technical conditions
    Opis:
    This paper presents the results of studies on the influence of unbalance of the rotor unit of a turbocharger on its operational parameters. Identification of the study object, a turbocharger of the NAPIER C-045 type, has been performed. The experiment was carried out at a test stand identifying turbocharger operational parameters belonging to the rotor unit unbalance group. Basing on the measured values and using a mathematical model, hypothetical values of operational parameters for different loads of Diesel engines were calculated. The obtained experimental results were compared to the calculated ones. On this basis, the studied turbochargers were classified into one out of three categories describing operational utility class of a given turbocharger. The order of sensitivity of turbocharger operational parameters to the unbalance of the rotor unit was established.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2013, 34 (106); 12-18
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A method of engines’ diagnosis in operationA method of engines’ diagnosis in operationA method of engines’ diagnosis in operation
    Autorzy:
    Sitnik, L.J.
    Sroka, Z. J.
    Wróbel, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/245541.pdf
    Data publikacji:
    2018
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    transport
    combustion engine
    engine diagnostic
    diagnostic methods
    engine technical conditions
    Opis:
    It was found that there are discrepancies between the values of diagnostic parameters obtained in the test and natural exploitation. In addition, no appropriate tests are carried out which would be based on the degree of engine degradation in long-term natural use. One of the reasons is the lack of adequate, non-invasive diagnostic methods. The aim of the work was to show the possibility of creating a new diagnostic parameter of combustion engines in their natural operation. The parameter can be determined by a new method (presented in the article). The method is based on the assumption that the technical condition of the engine can be judged on the basis of the run-up curve, and in particular, on the basis of the linear direction coefficient, which is approximated by the points of the run-up curve at particular moments of the run-up. An additional requirement is that the points of the run-up curve are the average value of the speed from many runs. In addition, the statistical distributions of the speed values in the individual moments of the run-up should be of the same type. The direction coefficient of the straight line determined is a diagnostic parameter. The value of the new coefficient is the value of the straight-line factor. Further works are underway to determine the relationship between the directional coefficient and the technical condition of the engine.
    Źródło:
    Journal of KONES; 2018, 25, 3; 403-410
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Faults of duty vehicles in the aspects of securing safety
    Niedomagania samochodów ciężarowych w aspekcie zapewnienia bezpieczeństwa
    Autorzy:
    Filipczyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/375138.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    bezpieczeństwo ruchu drogowego
    ładowność
    warunki techniczne
    road traffic safety
    duty vehicles
    technical conditions
    Opis:
    W pracy przedstawiono wyniki badań 500 samochodów użytkowych w aspekcie bezpieczeństwa użytkowania w ruchu drogowym. W badaniach wstępnych wykorzystano metodykę obowiązkowych okresowych badań kontrolnych. Badania prowadzono na stanowiskach kontrolnych oraz podczas prób drogowych. Dla samochodów wyposażonych w układy ABS pracowano specjalną metodykę badania. W przypadku stwierdzenia nieodpowiedniego stanu technicznego przeprowadzono dodatkowe badania w celu określenia przyczyn niesprawności. Ponad 280 pojazdów z grupy którą poddano kontroli było niesprawne.
    This paper presents the results of examinations of 500 duty vehicles. Tests were carried out in scope of securing safety in road traffic. The methodology of compulsory periodical inspections was applied during initial tests. Vehicles were examined on typical control stands and in road tests. A special methodology for road tests for heavy duty vehicles with anti-lock systems was elaborated. Additional checks were carried out in cases when the results of basic tests were dissatisfying. Above 280 vehicles of the total number of examined vehicles were faulty.
    Źródło:
    Transport Problems; 2011, 6, 1; 105-110
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of the results of transport - sociologic al surveys as a base for simulation of the traffic – transport process in the town of Žilina
    Porównanie wyników socjologicznych badań transportu jako podstawa symulacji ruchu - proces transportu w Żylinie
    Autorzy:
    Kalašová, A.
    Paľo, J.
    Mikulski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/115319.pdf
    Data publikacji:
    2017
    Wydawca:
    Wyższa Szkoła Techniczna w Katowicach
    Tematy:
    technical conditions
    junctions
    transport survey
    capacity
    modelling
    modelowanie
    modele agregujące
    badania socjologiczne transportu
    Opis:
    The modelling of transportation and transport processes in towns is a current problem. Recently, new transport planning models have been formulated on the principle of dividing the inhabitants into the groups with similar behaviour in the transport process. They are called non-aggregative or individual and this model is to be tested under the particular circumstances of the town of Žilina. The introduction of these methods in Slovakia fails because of the lack of the necessary data about the transport process, as it is difficult and costly to obtain them. They are transport sociological surveys in the households of the area. They would bring the necessary information. Comparison of some basic data is described on this paper.
    Modelowanie transportu i procesów transportowych w miastach jest problemem aktualnym. Ostatnio opracowano nowe modele planowania transportu, oparte na zasadzie podziału mieszkańców na grupy o podobnym zachowaniu w procesie transportu. Są one nazywane niełączącymi się lub indywidualnymi i taki model ma być testowany w konkretnych warunkach miasta Żylina. Wprowadzenia tych metod na Słowacji nie udaje się ze względu na brak koniecznych danych o transporcie, ponieważ ich uzyskanie jest trudne i kosztowne. Są nimi socjologiczne badania transportu w gospodarstwach domowych na danym obszarze. Zapewniłyby one potrzebne informacje. Artykuł opisuje porównanie niektórych podstawowych danych.
    Źródło:
    Zeszyty Naukowe Wyższej Szkoły Technicznej w Katowicach; 2017, 9; 41-48
    2082-7016
    2450-5552
    Pojawia się w:
    Zeszyty Naukowe Wyższej Szkoły Technicznej w Katowicach
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Technical, legal, and business conditionings of the functioning of rail operators in the freight transport market
    Autorzy:
    Krześniak, Mirosław
    Jacyna, Marianna
    Wasiak, Mariusz
    Lasota, Michał
    Wawryszczuk, Róża
    Powiązania:
    https://bibliotekanauki.pl/articles/38955900.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Warszawska, Wydział Transportu
    Tematy:
    international rail transport
    freight transport
    technical conditions
    legal conditions
    międzynarodowy transport kolejowy
    transport towarowy
    warunki techniczne
    warunki prawne
    Opis:
    In the article, the authors presented the technical, technological, legal, and business conditions of the functioning of rail freight transport in the international transport market. The authors analyzed the literature, considering this area's most important national and international normative documents. An essential element of the considerations is the presented schematic concepts of models for various forms of rail freight transport. The main ways of organizing freight transport at the eastern border were also indicated. The reasons for barriers that negatively affect the competitiveness of rail transport with other modes of transportation, especially in international transport, were shown. The rail transport market has undergone many changes recently, including investments in railway infrastructure, the growing importance of intermodal transport, and support for a more sustainable transport system. The article indicates the reasons for the occurrence of barriers that negatively affect the possibilities of further development of railways and the competitiveness of rail transport with other modes of transportation, especially in international transport.
    Źródło:
    WUT Journal of Transportation Engineering; 2022, 135; 101-114
    1230-9265
    Pojawia się w:
    WUT Journal of Transportation Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Condition monitoring of roller bearings using different diagnostic methods
    Autorzy:
    Barzdaitis, V.
    Žemaitis, V.
    Žebelys, K.
    Pocius, Z.
    Mažeika, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/328900.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    warunki techniczne
    diagnostyka
    drgania
    łożysko toczne
    metoda udarowa (SPM)
    technical conditions
    diagnostics
    vibrations
    roller bearing
    shock pulse method
    Opis:
    This paper deals with condition monitoring and failure diagnostics of spherical roller bearing on adapter sleeve running in high technology Chemical industry machines. Two methods have been used: low frequency mechanical vibration (up to 1000 Hz) and high frequency mechanical vibration (up to 16000 Hz) monitoring method and a shock pulse method (SPM, frequency 32000 Hz). Machines have been tested in at free run and fully loaded. Results have been applied to in-crease reliability of diagnostic methods in a case when radial clearances inside a bearing are too small and there is no enough lubricant oil supply to bearings. Radial clearances and relative vibra-tion displacements of rotor shafts have been measured using proximity probes. The low frequency vibration excitation method is not efficient enough in failure diagnostics of bearings in comparison to high frequency and shock pulse methods. Both these methods together are efficient evaluating technical condition of heavy loaded roller bearings. The experiments have been provided with spherical roller bearings on adapter sleeve SKF 22228 CCK/W33 and SKF 22216 CJC 403.
    Źródło:
    Diagnostyka; 2004, 30, T. 1; 53-60
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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