Database.use.hdl: https://hdl.handle.net/20.500.14172/20326
Now showing 1 - 10 of 92
  • conference paper; ;
    TRANSBALTICA XI: Transportation science and technology : proceedings of the international conference TRANSBALTICA : May 2–3, 2019, Vilnius, Lithuania. Cham : Springer, 2020. ISBN 9783030386658., p. 369-376
    This publication contains results of indicated diesel engine cycle parameters modelled using mathematical modeling AVL FIRE software. Purpose of research was to evaluate different combustion model adequacy to model indicated diesel engine cycle parameters. In order to achieve this purpose mathematical modeling was conducted using Eddy Breakup, Extended Coherent Flame-3Z, Characteristic Timescale models. Most accurate results were obtained using the Extended Coherent Flame-3Z model. At high engine load mode (HLM) this model had an error for the indicated mean effective pressure of 8%, for the indicated efficiency 10%, for the maximum cylinder pressure 8% and the difference in ignition delay was 2 CAD, however it did not perform well at low engine load mode (LLM) and had an error of 21% for indicated mean effective pressure, 19% for the indicated efficiency, 2% in the maximum cylinder pressure and the difference in ignition delay was 1 CAD. For the Characteristic Timescale and Eddy Breakup models the errors for indicated mean effective pressure were 13% and 14% in HLM and 16% and 13% in LLM respectively. One possible explanation for large errors in mathematical models is the difference in ignition delay between the experiment and mathematical models. The Characteristic Timescale and Eddy Breakup models had a difference in ignition delay of 4.5 CAD and 3.5 CAD respectively at HLM and 3.5 CAD at LLM.
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  • conference paper; ;
    TRANSBALTICA XI: Transportation science and technology : proceedings of the international conference TRANSBALTICA : May 2–3, 2019, Vilnius, Lithuania. Cham : Springer, 2020. ISBN 9783030386658., p. 407-414
    The article presents results from numerical studies evaluating one-dimensional mathematical model (MM) with single-phase I.I. Vibe combustion law for dual fuel (DF): diesel (D) and natural gas (NG) engine energy experiment. Adequacy criteria were established for high speed 4ČN79,5/95,5 engine with conventional fuel system, engine was tested on D100 and D20/NG80 fuel, in high (HLM), medium (MLM) and low (LLM) engine load modes, changing diesel injection angle (DIT) from −1 to −13° CA BTDC range for each load. The simulation of single-phase I.I. Vibe’s law of combustion is characterized by limited application possibilities. The rationality of single-phase model use was determined only in HLM engine mode (with error 7%). In the MLM and LLM regimes, the mismatch between real bi-phasic combustion with highly dispersed natural gas NG diffuse during second phase modelling error is 50%.
  • conference paper; ; ; ; ;
    7th IEEE Workshop on Advances in Information, Electronic and Electrical Engineering (AIEEE’2019) : 15-16 November 2019, Liepaja, Latvia : proceedings
    In this paper, we examine the engineering possibility to apply monitoring equipment to detect movement patterns and collect statistical information in harsh container handling environment, during loading and unloading procedures. We design a simple, yet highly efficient data capture tool and use it to solve a transportation problem to lower the security issues and costs associated with increased turn-over time. This is an ongoing EU Structural fund project, its aim is to present a way and a technological solution to synchronize the crane, and Automated guided vehicle (AGV) processes. We demonstrate the problem and provide the readers with a use case study.
      7Scopus© Citations 5
  • research article
    Ginters, Egils
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    Ruiz Estrada, Mario Arturo
    Procedia computer science: ICTE in Transportation and Logistics 2018 (ICTE 2018). Amsterdam : Elsevier Science, 2019, vol. 149., p. 1-2
    Scopus© Citations 1Scopus© SNIP 1
  • conference paper; ; ;
    Voznak, Miroslav
    VEHITS 2019 : proceedings of the 5th international conference on Vehicle Technology and Intelligent Transport Systems : May 3-5, 2019, in Heraklion, Crete, Greece. Vol. 1. Setúbal : SciTePress, 2019. ISBN 9789897583742., p. 505-512
    This paper provides an overview of the port container inspection techniques and procedures (standardized security procedures) relating to the detection of illicit material in containers. These procedures affect the duration of the containers transportation periods in different parts of the transport chain, according to the 2002 Container Security Initiative (CSI) regulations. The main object of this work – to demonstrate the inability of standard systems and associated technologies to deal with current threats and to propose solutions that are in line with the “intelligent containers” worldwide initiative.
    Scopus© Citations 3
  • book part
    Madjidian, Josefin
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    Dalaklis, Dimitrios
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    Henesey, Lawrence
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    Ölçer, Aykut I.
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    Ballini, Fabio
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    Kitada, Momoko
    Trends and challenges in maritime energy management. Cham : Springer International Publishing, 2018. ISBN 9783319745756., p. 383-399
    An extended number of international and/or national policies/regulations call for major improvements in contemporary energy consumption patterns (energy efficiency). A faster transition to sustainable energy production, as well as the introduction of various measures to improve the maritime industry’s environmental performance is also included in similar high level policy initiatives, with the establishment of Sulphur Emission Control Areas (SECAs) by the International Maritime Organization (IMO). One of the most prominent ways forward to achieve a more “environmental-friendly footprint” for those vessels engaged in maritime transport activities is to expand the use of Liquefied Natural Gas (LNG). Despite being of fossil origin, LNG is considered to be an important step toward cleaner shipping, given the better properties of the related exhaust gases when it is used as a marine fuel of internal combustion engines. The analysis at hand will discuss the development of a strategy for smoother and more efficient use of LNG as a fuel for transport needs in the Baltic Sea Region (BSR), with the aim of enabling “blue transport corridors”. This will be accomplished by investigating the related transport flows and LNG infrastructure developments; the creation of a wider in scope value chain that incorporates all transport modalities and industries that use natural gas today is also envisioned as the next step of research. This activity is a deliverable of the “Go LNG project”. Another important task within the same project is to provide stakeholders and other interested parties with a knowledge base of the most influential policies/regulations and technological standards in relation to LNG applications, including the cataloguing and short description of well-functioning business models and solutions already available.
  • conference paper; ; ; ;
    Marciniak, Z.
    Transport means 2018 : proceedings of the 22nd international scientific conference : October 03-05, 2018 Trakai, Lithuania. Kaunas : Kaunas University of Technology, 2018, pt 3., p. 1142-1146
    Inland waterways have been used for cargo transportation and tourism in many Countries. Inland waterways could serve for both passive and active water based tourism and cargo transportation. Many Countries around the Baltic Sea are plains and abound in rivers and channels with natural environment which makes them very attractive for visitors and freight navigation as well. Meantime the Baltic Sea Region (BSR) states railway network has been developed very well and railways account for the largest portion of the freight movement, except for the oversize cargo segment which is very complicated to transport by railways and roads. Natural environment, interesting historical and sightseeing spots, fairly low density of population and availability of quality services close to the inland waterways play a very important role in water tourism development. This Article analyzes oversize cargo transportation by IWW and water tourism objects close to the IWW in BSR, possibilities for development of new freight- and tourism related products on the inland waterways, advantages and disadvantages of the IWW freight and tourism in BSR.
  • conference paper
    Paulauskas, Vytautas
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    Henesey, L.
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    Gerlitz, L.
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    Jankowski, S.
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    Canepa, M.
    Transport means 2018 : proceedings of the 22nd international scientific conference : October 03-05, 2018 Trakai, Lithuania. Kaunas : Kaunas University of Technology, 2018, pt 2., p. 660-664
    As an alternative to traditional fuel and energy source LNG (Liquefied Natural Gas) has many advantages, such as lower emissions while providing a means of energy for trucks, trains and ships. In focusing on the maritime transport sector the reasons for using LNG make a convincing business case, but lead to many discussions on LNG investments. The key issue has been is: “should investment be implemented first on LNG bunkering stations and then wait for the market to build ships to use the facilities or should investment wait until there is a demand?” Obviously, this creates a “chicken-and-egg” situation on when and where to invest for LNG use to take place. The initial experiences in using LNG in maritime and road transport suggest that the transport firms often take the risk themselves by not only investing into the transport units (ships, trucks) themselves but also invest into the infrastructure as well, e.g., developing LNG bunkering facilities. At the same time with these large initial investments for developing LNG bunkering networks there are more and more requests for identifying optimal solutions, often are based on real LNG fuel demand in ports and on the roads. This paper is oriented on the study for optimal bunkering network creation, which is argued to help with improved efficiency in the supply of LNG fuel to transport users. In addition, optimal investments for LNG bunkering networks can be realized.
  • conference paper; ; ; ; ; ;
    Gerlitz, L.
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    Madjidian, J.
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    Jankowski, S.
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    Henesey, L.
    Transport means 2017 : proceedings of the 21st international scientific conference : September 20-22, 2017, Juodkrante, Lithuania
    The increasing demand for Liquid Natural Gas (LNG) is causing many challenges for users and suppliers worldwide. Though there is strong interest in using LNG, the research published in this paper indicates there are challenges in developing adequate delivery and distribution chains within the supply chain. Ideally, LNG distribution chains should be created on the basis of user demands and need. In this paper we have articulated an optimisation model that considers the various potential users and their characteristics in order to identify if possibilities and prospects exist in developingan adequate LNG supply chain. The case study of Lithuania and Latvia serves as a model from which we are able to use our tool to help identify the factors for success in creating such LNG supply chains.
  • conference paper; ; ; ;
    Transport means 2017 : proceedings of the 21st international scientific conference : September 20-22, 2017, Juodkrante, Lithuania
    Oversize cargo transportation market is growing every year, because of increased quality requirements to the energy, chemistry and other industries‘ spare parts and components. To ensure high quality performance, much more spareparts should be coming pre-assembled from the manufacturers (factories producing original spare units). Oversized cargo haulage by road or railway is very complicated due to non-standard parameters and weights of the transported units. Inland waterways can offer a good alternative to road and railway for the oversize/overweight shipping. The Article analyses potential and feasibility for inland waterway shipping of oversize cargo, and adjustment of Inland waterways facilities for oversize freight.