Статті КБМ

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Browsing Статті КБМ by Author "Evdomakha, Grigory V."

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    The Issue of Saving Fuel and Energy Resources for Hauling Operations
    (2012) Jastremskas, Virgilijus; Lingaitis, Leonas Povilas; Jevdomacha, Grigorij; Evdomakha, Grigory V.
    EN: Abstract The main provisions of the methods used for optimization of station-to-station travel times taken (according to criteria of minimum consumption of fuel and energy resources for haulage), which are used for train timing, are examined. The methods can be applied for cargo, passenger and suburban train service on electrified and non-electrified sections of railway.
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    Methods of Calculation Line Optimum Travel of Trains with Consideration of Longitudinal Dynamic Efforts
    (Wydawnictwo Politechniki Śląskiej Gliwice, 2013) Lingaitis, Leonas Povilas; Vaičiūnas, Gediminas; Liudvinavičius, Lionginas; Jevdomacha, Grigorij; Evdomakha, Grigory V.
    EN: The paper examines the main provisions of the methods used for optimization of station-to-station travel time taken (according to the criteria of minimum fuel consumption for haulage) for freight long train timing with consideration of longitudinal dynamic efforts. A hybrid mathematical model of long train travel is developed, where in one case of travel the train is considered as a flexible non-extensible line with a variable running weight, in other cases the train is considered as a system of weights connected by nonlinear deformable elements with a consideration of gap clearance in a draft. The model allows essentially reducing the time of solving the problem. The problem of selecting an optimum mode of train operation with consideration of longitudinal dynamic efforts and use of method of dynamic programming in a discrete form was set.
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    Research on Selection of Modes of Driving Heavy Trains on Main IXB and IXD Corridors of JSC "lietuvos Geležinkeliai"
    (Wydawnictwo Politechniki Śląskiej Gliwice, 2012) Lingaitis, Leonas Povilas; Dailydka, Stasys; Jevdomacha, Grigorij; Evdomakha, Grigory V.
    EN: Abstract. Optimum haul times of running for a train schedule and mode diagrams corresponding thereto calculated using the program system passed operational check with the purpose to obtain reliable statistical estimation of their impact on reduction of the fuel consumption on haulage of trains and level of longitudinal dynamic efforts. The optimal speed of the train is chosen (defined) taking into account the given travel time and the longitudinal track profile, when the Diesel locomotive fuel consumption are minimum. Results of experimental research with long trains, weight up to 8000 tons, are presented herein. Experimental operational trips confirmed the correctness of theoretical preconditions and techniques of selection of optimum modes of driving of long trains, demonstrated potential for decrease of level of longitudinal dynamic efforts by 1.5-2 times and achievement of fuel economy on haulage up to 5-8 % when such trains move on a site with the undulating way profile.