Wyniki wyszukiwania - BazTech

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Wybrane aspekty wykorzystania ogniw paliwowych w układach napędowych pojazdów wojskowych

Makarewicz Mateusz, Płochocki Patryk, Simiński Przemysław

Prace Naukowe Politechniki Warszawskiej. Transport

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2019

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z. 124

87--97

PL

Niniejszy artykuł ma na celu przedstawienie zapotrzebowania energetycznego pojazdu ciężarowo-terenowego, którego podstawowym zadaniem jest realizacja funkcji transportu towarów. Dla przyjętego charakteru wykonywanych zadań transportowych wykonano studium analityczne dostępnych możliwych rozwiązań konstrukcyjnych. Do dalszych rozważań przyjęto pojazd o klasycznej budowie z silnikiem spalinowym oraz jego odpowiednik zasilany energią elektryczną wytwarzaną w stosie ogniw paliwowych. Dla obu rozważanych konstrukcji wykonano bilans energetyczny oraz symulacyjne obliczenia parametrów trakcyjnych. Wynikiem zrealizowanej pracy jest ocena porównawcza przydatności stosu ogniw paliwowych jako pierwotnego źródła energii napędowej dla pojazdu ciężarowo-terenowego ogólnego przeznaczenia.

EN

This article aims to present the energy needs of a cargo off-road vehicle, whose primary task is to perform the function of transporting goods. For the assumed character of performed transport tasks, an analytical studies of possible construction solutions were carried out. For further considerations, a classic vehicle with an internal combustion engine and its equivalent powered by electricity produced in the fuel cell stack were adopted. For both of the concerned constructions an energy balance and simulation calculations of traction parameters were made. The result of the executed work is a comparative assessment of the suitability of the fuel cell stack as a primary source of drive energy for a general-purpose cargo off-road vehicle.

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The analysis of conditions for testing mileage of military vehicles

Luty W., Mieten M.

Scientific Journal of the Military University of Land Forces

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2018

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Vol. 50, No. 3(189)

181--191

EN

The study discusses the issue of determining the conditions for testing the mileage of a vehicle. Lifetime tests are the crucial element of qualification tests. This type of research verifies the resistance of vehicles and elements of their on-board equipment to vibrations and shocks resulting from the interaction of uneven surface during the movement. Certain test conditions can be straightforwardly determined and verified e.g. weather conditions or a type of the road/surface. The problem appears when the tests are to be conducted in field conditions (off-road). At the set driving speed, the level and frequency structure of dynamic loads of elements of a vehicle drive system depend mainly on a surface profile and its viscoelastic conditions. Either the profile or the characteristics of ground foundations change over the time depending on various factors. The paper attempts to assess the interaction of a ground surface of selected field roads on a vehicle. The result of direct measurement of the vertical acceleration captured on a drive axle and on a vehicle’s frame above the axle was addressed. The measurement results were analyzed within the context of possible planning of vehicle test requirements with the application of the method of testing mileage under the field conditions.

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Examination and assessment of special purpose vehicle crews’ comfort while operating in off-road conditions

Luty W., Kupicz W., Zwierzyński M.

Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki

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2017

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Nr 3

132--147

EN

In the era of the rapid development of motorization one of the most important characteristics of transport vehicles is the safety and comfort of their drivers and passengers. In particular, people driving vehicles professionally are exposed to vibrations, which may adversely affect their bodies, causing discomfort, dysfunctions, and even lesions of disease. The vibration level triggered by the system a road – a vehicle depends on the type and profile of the road surface as well as the driving speed. Vibration levels are assessed by means of characteristics and comfort comparative indexes determined by experimental methods. Attempts at assessing the comfort while driving along paved roads may be found in many publications; however, there is a lack of information on testing vehicles moving in off-road conditions, which is substantial from the point of view of military vehicle crews’ comfort. The driving comfort of crews of wheeled vehicles is subjected to examinations at the Military Institute of Armored and Automotive Technology.

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Assessment of the comfort of passenger transport in special purpose vehicles

Jamroziak K., Kosobudzki M., Ptak J.

Eksploatacja i Niezawodność

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2013

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Vol. 15, no. 1

25-30

EN

The article discusses the issue of comfort, that should characterize a vehicle which has been designed to work under special conditions. If the criteria of ensuring the proper comfort of the passengers of special purpose vehicles are not met, it might lead to a serious disturbances in perception and in other factors that affect the logical behavior. Performance characteristics generated by the body of the vehicle during tests on the range can be assessed only through research and then related to the characteristics of the human body-vehicle system. The presented results concern the assessment of the ride comfort in the selected vehicles under special conditions and capacity of the crew to effectively perform tasks after long-lasting ride.

PL

W artykule omówiono zagadnienia dotyczące komfortu, jakim powinien charakteryzować się pojazd do pracy w warunkach szczególnych. Nie spełnienie kryteriów właściwego komfortu u przewożonych osób pojazdami specjalnego przeznaczenia prowadzi do powstawania poważnych zaburzeń na tle percepcji i innych czynników niezbędnych w logicznym postępowaniu. Jedynie na drodze badań możemy ocenić charakterystyki generowane przez nadwozie w testach poligonowych i odnieść to do charakterystyk organizm ludzki-pojazd. Prezentowane wyniki dotyczą oceny charakterystyk komfortu poruszania się wybranymi pojazdami w warunkach szczególnych i możliwości wykonania zadań przez przewożony personel po długotrwałej jeździe.