Optimizing Resources of Multimodal Transport Terminal for Material Flow Service

Purpose. To identify environmental climatic impacts resulting from the biodiesel fuel use for vehicles (Vs). Methodology. The methods are based on computation of natural resource consumption and toxic emission with the help of environmental footprint calculator being a software program. Findings. The results of integral assessment of the environmental impact (namely, consumption of water, power, natural resources, and emission of greenhouse gases 2, and NOx in terms of such base traction trucks as VOLVO FM, FH, FE, and FL) were computed for biodiesel fuel types 0, 7, 30, 100 depending upon different standards of EURO propellants. Both positive and negative environmental impact factors have been determined for consuming biofuels during full lifecycle of Vs. It has been defined that minor decrease in 2 emission owing to the use of standard modern biodiesel fuel is followed by significant increase in NOx emission as well as power and water consumption in terms of first-generation biodiesel fuel utilization. VOLVO F Vs were applied for comparative analysis of environmental impact by first-generation biodiesel fuel (i.e. 7, 30, 100) and second-generation fuel being hydrotreated vegetable oil (HVO). Similar tendencies were recognized. Moreover, opportunity to apply biodiesel fuels along with other measures decreasing 2 emission was analyzed. Originality. Originality is stipulated by the use of the integrated assessment of impact of vehicles on climate change as well as use of natural resources while applying biodiesel fuel for vehicles. Practical value. It is possible to forecast environmental consequences resulting from the use of various biodiesel fuels for Vs.

Section: Fig 2 Calculation Results Of the Natural Resource Consumption And Pollutant Emission In Terms Of в100 Fuel Usementioning

confidence: 99%

Influence of diesel vehicles on the biosphere

Волков¹,

Внукова²,

Таран³

et al. 2020

“…A detailed estimate of the time spent on performing shunting operation can be obtained as a result of numerical modeling of the transport objects functioning. Description of the simulation model is given in the work [7], a seaport -in the work [8], a multimodal transport terminal -in [9]. Simulation models make it possible to estimate in detail the time spent on performing shunting operations, however, due to their complexity, the direct use of these models in solving optimization problems is diffi cult.…”

Section: Information Technologies Systems Analysis and Administrationmentioning

confidence: 99%

“…Considering that in the 1520 mm railway network the standard length of station tracks is 57-86 cars, it is impossible to enumerate all options for shunting long trains from track to track. Moreover, the time spent on evaluating the duration of cars shunting from track to track should also be minimized for short trains, as this problem is repeatedly solved as part of more complex problems of searching the optimal order of performing complex shunting operations, such as sorting, collecting cars, train formation, and others [5,6,9]. Therefore, it is necessary to develop a method for solving the problem (2) under limitations (3), which requires a minimum amount of computational work.…”

Section: Information Technologies Systems Analysis and Administrationmentioning

confidence: 99%

“…At present, the shunting of cars from track to track is carried out under conditions of limiting the movement speed vmax at the level of 10-25 km/h. It should be noted that, based on expression (9), an increase in the number of cars in a train set when performing shunting operation at speeds up to 31.75 km/h leads to a decrease in the distances d 1 and d 2 necessary to achieve the maximum permissible movement speed vmax. As a result, now most of the movements for car shunting from track to track occur when reaching the speed vmax, and, with the same value of z, the difference in the shunting duration when varying the values of mi is insignificant.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Improvement of the method for standardizing the duration of rail cars shunting

Козаченко¹,

Gera²,

Manafov³

et al. 2021

Purpose. To improve the method for calculating the time standard for shunting cars from track to track in order to take into account the local operating conditions of railway stations and railway sidings. Methodology. During the research, the methods of theory of railway operation were used. The problem of calculating the time standard for shunting operation was solved as the problem of searching the optimal division of train set into the car groups to achieve minimal time consumption for shunting operation. Findings. In the course of the study, the methods for calculating the time standards for initial and final operations, as well as movements performed when shunting cars from track to track were improved. It was proved that the minimum time spent on shunting cars from track to track was achieved when the train set was divided into the minimum possible number of parts and the cars were shunted in the longest possible groups and one remaining group. It was also established that with sufficient accuracy for engineering problems the duration of shunting train set from track to track can be represented by the piecewise linear function of the car number in it. Originality. The work originality consists in improving the method for calculating the time standard for shunting cars from track to track, that, unlike the existing one, takes into account the length limitations of the car groups being shunted from track to track, as well as the actual composition of operations performed in the process of shunting. Practical value. The use of the developed method allows setting time standards for shunting cars from track to track, taking into account the local operating conditions of railway stations and sidings of industrial enterprises. The method also makes it possible to simplify solving problems of searching the optimal order of performing more complex shunting operations, such as sorting cars into several tracks, collecting cars on one track, train formation, and others.

“…The obtained results can be used in the modernization of other lubrication points for vehicles [15,16] as well as in neighboring branches of industry [17,18] and in manufacture of such systems [19,20].…”

Section: Introductionmentioning

confidence: 99%

Lubricants for rail transport liquid (plastic) for friction pair “wheel – rail”

Belikov¹,

Kreknin²,

Matsuk³

et al. 2022

Purpose. To formulate the requirements for the basic properties of lubricants suitable for use in the systems of on-board lubricators of rail vehicles. To develop a generalized algorithm for controlling the devices of the lubrication system of rail vehicles and to propose a method for controlling the lubrication system of the wheel flanges of a rail vehicle, which makes it possible to turn on the system in advance in order to prevent an increase in the interaction forces of the wheel flanges and rails during the entry to the curved section of the rail track, as well as on the turnouts. Methodology. Research methods include statistical analysis of the results of experimental tests of the properties of existing and proposed lubricants on the STs-2 friction machine and in the conditions of real operation of the rolling stock of JSCUkrzaliznytsia. Findings. Based on the results of operational tests, it was found that Relsol-M lubricant, which is regenerated, homogenized and modified with solid lubricating impurities, even with an expired shelf life, retains and demonstrates the transfer effect on all wheels of the VL11m/6 locomotive, and also slows down the wear rate of the combs of the wheel rims which were not chiseled during the tests by 3.57 times and the combs of the bandages which were chiseled during the tests by 4.25 times. Mariol NT demonstrated the effect of reducing the intensity of wear processes of the ridges of locomotive tires in the mode of freight traffic in relatively light track conditions by 2.5 times, and in more difficult road conditions by 5 times. Originality. Requirements for the basic properties of lubricants, which are suitable for use in on-board lubricator systems of rail vehicles, have been formulated. Practical value. A generalized algorithm for controlling the lubrication system of railway rolling stock is developed and a method for controlling the lubrication system of the flanges of the rail rolling stock is proposed, which makes it possible to turn on the lubrication system in advance when a rail vehicle enters a curved section of the track, as well as a turnout.