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    Wyświetlanie 1-3 z 3
    Tytuł:
    Prototype of electric bus of AMZ Kutno
    Autorzy:
    Pawelski, Z.
    Maciejczyk, A.
    Wróbel, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/244239.pdf
    Data publikacji:
    2014
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    electric bus
    electric drive system
    electric motor
    inverter
    microprocessor control system
    pack of batteries
    batteries management system
    supercapacitor
    energy recuperation system
    Opis:
    The article discusses the prototype bus AMZ Kutno electrically driven. The aim of the project prototype electric powered bus was appointed a consortium consisting of AMZ Kutno and Department of Vehicles and Fundamentals of Mechanical Engineering of Technical University of Lodz. As a subcontractor prototype solutions involved: for battery power BMZ Gliwice, and for the control system ENIKA Lodz. The prototype bus with complete drive system is an entirely polish construction. The paper presents assumptions for the construction of a prototype electric drive system. It describes the criteria for the selection of the engine. Was analysed the available parameters of electric motors. Adopted electric motor is discussed in detail in terms of its performance characteristics. Required performance characteristics of electric motor shown in figure. The considerations taken into account and the aspect of the selection of the inverter and the microprocessor control system control the amount of energy in batteries and supercapacitors, depending on the instantaneous energy demand and the expected driving performance. Was compared the parameters of available batteries and set them the necessary capacity. It has been specified parameters of adopted battery pack. Was described the role and selection of supercapacitors in energy recuperation system provided. The assumptions were supported by the necessary calculations.
    Źródło:
    Journal of KONES; 2014, 21, 1; 197-204
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    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:
    Testing of internal combustion engines of motorcycles with the use of thermal imaging methods
    Autorzy:
    Magdziak-Tokłowicz, M.
    Skrętowicz, M.
    Wróbel, R.
    Sroka, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/949484.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    combustion engine
    thermal analysis
    thermography
    thermal research of motorcycles
    Opis:
    The internal combustion engine should be rated for the thermal loads that come from different sources. Thermal analysis is important both for design purposes and for evaluating the conditions of its use. Very good results are obtained by a combination of non-invasive measurement techniques, such as research using infrared thermal imaging techniques [3, 11]. The purpose of the study was to determine the engine thermal load by evaluating the average temperature on the outside surface of the engine at many of its points for two selected motorcycle engines with similar displacement capacities. For many reasons, such as ecology, durability, engine strength and thermal performance when heating and cooling are critical. To accomplish this task, a thermographic technique for indirect evaluation has been used, thus creating the possibility of measuring the temperature in a dynamic manner. These are accurate measurements and most importantly do not interfere with the construction of the object under investigation. The engine was tested during operation according to external and load characteristics. As a result of the work, graphs of temperature curves of heating and cooling of the tested engines were compiled. The article presents a methodology for measuring the temperature fields of outer surface engines. The collected material will be used in the future for studying the equable load on the cylinders, and as accurately as possible determine the conditions of movement such as power, revolutions, flow rates, temperatures and pressures.
    Źródło:
    Journal of KONES; 2017, 24, 4; 181-186
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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