ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
type: channel
description: Advances in Mechanical Engineering and Transport is a peer-reviewed, open access journal that publishes original research articles as well as review articles in all areas of mechanical engineering, fundamentals of the transport system, technology for carrying passengers and freight, technology for multimodal transportation and logistics, agricultural motor vehicles, traffic safety and environment protection, design, manufacture and exploitation of motor vehicles, transport energetics, fuels, lubricants and maintenance materials, transport information technologies, transport economics and management, transport educology, and also, in areas of mathematical modelling and simulation of technical processes. The journal is intended for practising engineers, academic and industrial researchers.
publisher: ЛУЦЬКИЙ НАЦІОНАЛЬНИЙ ТЕХНІЧНИЙ УНІВЕРСИТЕТ
language: en
publication name: ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
issn: 2313-5425
items: V. P. Volkov, V. P. Onyshchuk, T. V. Volkova, M. A., V. I. Pavliuk. Levchuk. Aspects of designing a virtual motor transport enterprise
items: V. Stelmashchuk, S.Stelmashchuk Influence of effort in the traction and coupling on the stability of a light-tongue road train in the braking mode
items: Justification for choosing car washing equipment
items: Improvement of energy efficiency and environmental safety indicators of a hybrid vehicle through rational selection of its control parameters
items: On-board information and communication systems as a means of integrating vehicles with transport infrastructure
items: Critical analysis of methods for assessing the safety of regulated and unregulated intersections, taking into account the complexity of transport interactions
items: Justification of the necessity of introducing military units of the national guard of ukraine and the use of light trailers during the performance of combat tasks by mobile fire groups
items: System for diagnosing the technical condition of internal combustion engines of heavy duty vehicles
items: Тhe influence of the trailer center of mass displacement on the motion stability of an articulated bus
items: Analytical review of approaches to ensuring positioning accuracy of industrial robots in welding operations
items: Kinematic analysis of a piston internal combustion engine with a rocker-slider mechanism
items: Formation of an effective cargo delivery system based on optimization of logistics processes
items: Effective management of urban passenger road transport flows using advanced methods of their forecasting
items: Method of managing the quality level of passenger service on urban routes
items: Research on the satisfied demand for truck parking depending on the location and capacity of parking lots on the highway
items: Implementation of sustainable urban mobility plans as a tool for achieving sustainable development goal 11 in cities of Ukraine
items: Calculation of energy costs of mobile technological transport units
items: Systematization of approaches to parameters settings of genetic algorithms for optimizing public transport schedules
items: Research on the economic efficiency of using biogas fuel with commodity gasoline in the 7th generation hbo power supply system
items: Improvement of mathematical models of the interaction of vehicle wheels with a roller traction stand.
items: Resonant automotive heat pump: principle of operation, efficiency, and implementation prospects
items: The use of a front hitch system on a self-propelled tractor chassis to enhance its versatility and efficiency
items: Analytical assessment of the interaction between tyre and ground surface
items: Experimental investigation of light commercial vehicle traction-speed properties
items: Transport efficiency, project analysis and potential of transport enterprises
items: Comprehensive Analysis of Service Infrastructure for Specialised Rolling Stock on Truck Chassis in The Vinnytsia Region
items: Research of a Diesel-to-Gas Converted Engine Operating on Propane–Butane
items: Digital twin of a multimodal transport hub for adaptive management of passenger and freight flows in real time
items: About the safety parameters of a car in the event of a shock absorber's deterioration
items: Research on the impact of the technical condition of diesel engine air intake system components on passenger car fuel consumption

V. P. Volkov, V. P. Onyshchuk, T. V. Volkova, M. A., V. I. Pavliuk. Levchuk. Aspects of designing a virtual motor transport enterprise
type: item
description: The transport sector of Ukraine is dominated by small operators: about 83 % of carriers have fleets of one to three vehicles, and 61 % own a single vehicle. Maintaining a full-scale operating base — service bays, repair workshops, diagnostics — is not economically feasible for such operators, yet the technical standards for vehicle condition apply to them equally. This paper proposes a model of a virtual motor transport enterprise — an information layer that performs the technical-service functions traditionally carried out by an in-house department, without requiring physical production facilities. The model is implemented as the KhNAHU–TESA system, built around satellite monitoring of rolling stock and integrated with specialised software complexes (Virtual mechanic «HADI-12», Service Fuel Eco «NTU-HADI-12», MonDiaFor «HADI-15», IdenMonDiaOperCon «HNADU-16»). The system has a three-tier architecture: an onboard layer (vehicles fitted with scanner-communicators and GPS/GSM receivers), a network layer (GSM/GPRS, Internet) and an analytical server layer (telematics server, MS SQL/Interbase database, GIS, browser-based access for clients). System functions fall into three groups: monitoring (real-time tracking of vehicle status, navigation parameters, fuel consumption, alarms), control (dispatcher commands, voice communication, route compliance) and information storage with integration into third-party systems. The approach lets small carriers access ITS-grade fleet management while avoiding capital investment in physical infrastructure, and supplies researchers with continuous operational data on the influence of road, traffic and climatic conditions on vehicle technical condition.
subject: Статті
  topic: section
subject: virtual motor transport enterprise; technical operation; vehicle monitoring; rolling stock; GPS/GSM; intelligent transport systems; fleet management; vehicle life cycle
  topic: keywords
creator: Volodymyr VOLKOV
creator: Vasyl ONYSHCHUK
creator: Tetiana VOLKOVA
creator: Vasyl PAVLIUK
creator: Maksym LEVCHUK
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/ke19t134

V. Stelmashchuk, S.Stelmashchuk Influence of effort in the traction and coupling on the stability of a light-tongue road train in the braking mode
type: item
description: The braking of a light-duty road train is often complicated by additional forces transmitted through the traction-coupling device, which can trigger jackknifing and loss of lateral stability. Earlier studies have shown that, under nominal loading and when braking forces on all wheels equal the coupling forces, the road train remains stable across the full range of trailer masses at 25 m/s; at 30 m/s the critical trailer mass drops to about 2500 kg. Those models, however, did not account for two factors: timing asynchrony between the car's and trailer's braking systems, and the compression force in the traction-coupling device. © Стельмащук В.В., Стельмащук С.В. 2026 ISSN 2313-5425 , 2026, №1 (26) 447 This work refines the planar braking model of a light-duty road train to include both effects and analyses the transient response to step braking at initial speeds of 15 m/s and 25 m/s. The results show that during the first 0.3 s after braking begins, the normal road reactions on the car and trailer axles remain almost unchanged, because the compression force in the coupling absorbs part of the longitudinal load transfer. Over this interval the articulation angle stays below 0.015 rad and the trailer's lateral deviation does not cross the lane boundary (S_b = L_n · tan(0.015) = 0.029 m). With time, however, the articulation angle grows and the trailer drifts beyond the lane: S_b = 0.186 m at V = 15 m/s and S_b = 0.375 m at V = 25 m/s. The trailer's lateral oscillations are damped and its lateral velocity stabilises over time, so the road train eventually recovers stability. The compression force in the traction-coupling device therefore proves a non-negligible factor within the first 0.3 s of braking and should be included in stability assessments of light-duty road trains.
subject: Статті
  topic: section
subject: light-duty road train; braking; traction-coupling device; jackknifing; articulation angle; lateral stability; longitudinal load transfer; brake timing asynchrony
  topic: keywords
creator: Valery STELMASHCHUK
creator: Stanislav STELMASHCHUK
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/wvqsev09

Justification for choosing car washing equipment
type: item
description: The aim of this study is to develop an approach to selecting car wash equipment. Based on an analysis of modern car wash technologies and the equipment used in this process, a classification of such equipment according to a number of criteria is proposed. Data on the technical characteristics of various types of car wash equipment are presented. It has been established that the decisive factors in selecting the type of car wash equipment are their technical and operational characteristics, taking into account economic feasibility and modern environmental requirements. The potential for establishing self-service car washes in the city of Kropyvnytskyi is highlighted. The paper analyses modern car washing technologies and the equipment used in this process, which has enabled a classification of these technologies based on key characteristics. In particular, for different washing methods and technologies, these characteristics include: type of service, washing mechanism, impact on the surface being washed, and working water pressure. Car wash equipment is classified by: degree of specialisation, level of mobility, technical design, vehicle class, construction, operating mode, and method of water heating. It has been established that the key factors in selecting the type of car wash equipment are technical, operational, economic and environmental indicators. Taking these indicators into account can provide practical guidance when choosing car wash technology and equipment. Taking into account current trends in the services market, it has been concluded that automated and contactless car wash systems, as well as self-service car washes, have a promising future in Kropyvnytskyi.
subject: Статті
  topic: section
subject: Key words: car service company, service services, car washing technologies, car washing equipment, contactless washing systems, self-service car wash
  topic: keywords
creator: Ihor SHEPELENKO
creator: Volodymyr SHUMLIAKIVSKYI
creator: Mykhailo KRASOTA
creator: Ruslan OSIN
creator: Taras CHERVONYI
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/d4aq0798

Improvement of energy efficiency and environmental safety indicators of a hybrid vehicle through rational selection of its control parameters
type: item
description: In the article, based on power balance equations and using the results of experimental studies, a mathematical model of the Toyota Prius II hybrid vehicle has been developed, which makes it possible to determine its energy efficiency and environmental safety indicators under specified driving conditions. An algorithm for selecting the operating mode of a hybrid vehicle has been developed, which is achieved depending on driving conditions, power unit parameters, and the fulfillment of control and boundary conditions. This algorithm enables the implementation of a specific control strategy and influences the vehicle’s energy efficiency and environmental safety indicators. To evaluate the influence of the hybrid vehicle power unit parameters and its control on energy efficiency and environmental safety indicators, coefficients of maximum capacity and power of the traction battery, as well as the threshold speed for switching to hybrid mode, are proposed. Depending on these parameters, mathematical modeling of the energy efficiency and environmental performance of the Toyota Prius II hybrid vehicle was carried out in a driving cycle according to UNECE Regulation No. 83. Based on the simulation results, it was established that, from the standpoint of improving energy efficiency and environmental safety indicators, the most effective approach is to use a control strategy with switching to hybrid mode at speeds above 40 km/h, ensuring that the electric power drawn from the traction battery does not exceed 50% of its nominal value, provided that the battery maximum capacity is within 50-100% of nominal capacity. This makes it possible to reduce the fuel consumption of the hybrid vehicle compared to a conventional ICE vehicle by up to 42%, CO emissions by up to 29%, CmHn by up to 52%, and CO2 by up to 46%, while NOx emissions increase by up to 33%.
subject: Статті
  topic: section
subject: Keywords: power balance, hybrid vehicle, energy efficiency, environmental safety, control parameters, traction battery, hybrid mode, driving cycle.
  topic: keywords
creator: Mykola TSIUMAN
creator: Ihor SADOVNYK
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/rg59qe08

On-board information and communication systems as a means of integrating vehicles with transport infrastructure
type: item
description: The intensification of vehicle development, the increasing complexity of their design, and the growing requirements for safety, reliability, and operational efficiency necessitate comprehensive scientific research in this field. A modern vehicle is increasingly transforming into a complex technical and information system, the functioning of which requires well-founded decisions regarding the integration of hardware–software components and control algorithms. In this context, on-board information and communication systems (OICS) of vehicles are investigated as a key means of integration with transport infrastructure under the conditions of intelligent transportation systems development. The article reveals the essence, functional purpose, and role of OICS in ensuring information interaction between vehicles, infrastructure elements, and traffic management systems. The evolution and classification of OICS according to the level of integration, functional purpose, and degree of automation are considered. The main structural components of modern integrated systems and the principles of their operation within a unified information space of the transport system are identified. It is established that the implementation of OICS contributes to improving road traffic safety, enhancing the operational efficiency of vehicles, optimizing maintenance and repair processes, and reducing the negative environmental impact of transport. The main technical, economic, and organizational constraints on the implementation of such systems are identified, and prospective directions for their further development are outlined. It is proven that OICS constitute the technological basis for integrating vehicles into a unified information space and for forming sustainable, safe, and efficient models of modern mobility. This creates prerequisites for the development of a unified approach to the implementation of intelligent transport technologies and for ensuring the sustainable development of the…
subject: Статті
  topic: section
subject: Key words: vehicle; onboard information and communication systems; transport infrastructure; integration of transport systems; intelligent transportation systems
  topic: keywords
creator: Ihor KHITROV
creator: Serhii KLIMOV
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/vjnvhg60

Critical analysis of methods for assessing the safety of regulated and unregulated intersections, taking into account the complexity of transport interactions
type: item
description: A critical analysis of classical and modern methods for assessing the safety of regulated and unregulated intersections, accounting for the complexity of traffic interactions, has been conducted. It has been shown that approaches based solely on accident statistics or the counting of conflict points have limited capacity to identify potentially dangerous situations and do not sufficiently account for interactions involving vulnerable road users — pedestrians, cyclists, and public transport users. Based on a synthesis of research, the feasibility of moving from rigidly fixed empirical coefficients to a universal principle for forming weight indicators for conflict points is justified. A generalized approach to determining weighting coefficients for conflict interactions is proposed, combining the nature of transport interaction and the level of vulnerability of the most vulnerable participant in the conflict. A universal formula for an integral indicator of intersection complexity has been developed, allowing the quantitative consideration of various types of conflict interactions, including those involving pedestrians, cyclists, and urban rail transport, without introducing a large number of separate empirical coefficients. The proposed indicator is interpreted as a measure of the potential danger at an intersection, consistent with the concept of surrogate safety analysis. A typical urban, unregulated intersection demonstrates that accounting for conflicts involving vulnerable road users can significantly alter the final assessment of complexity and raise the intersection's potential danger category. This confirms the feasibility of the proposed approach for comparative assessment of alternative traffic management schemes and for prioritizing safety improvement measures.
subject: Статті
  topic: section
subject: Key words: road safety, intersections, conflict points, traffic interactions, vulnerable road users, integral complexity index, weighting coefficients
  topic: keywords
creator: Olga KHOLODOVA
creator: Maryna BUHAIOVA
creator: Oleg KHOLODOV
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/39eh8d59

Justification of the necessity of introducing military units of the national guard of ukraine and the use of light trailers during the performance of combat tasks by mobile fire groups
type: item
description: The enemy continuously employs strike unmanned aerial vehicles (UAVs) to conduct aerial attacks against Ukrainian cities. Every night and on a daily basis, personnel of the National Guard of Ukraine perform combat duty as part of mobile fire groups in order to effectively accomplish tasks related to the air defense coverage of critical infrastructure facilities, as well as other state and strategic military assets that may potentially be targeted by UAVs of the “Shahed” type. The establishment of mobile fire groups is a forced but necessary measure. Their primary purpose is to enhance the protection of Ukrainian airspace, provide localized defense of critical infrastructure, and safeguard state and strategic military facilities that may become targets of enemy UAV strikes. The use of light trailers towed by passenger vehicles of various operational categories for the execution of combat tasks by mobile fire groups represents an important step toward increasing the effectiveness of countering aerial threats and expanding the number of firing positions during air raid alerts. This approach enables the creation of additional mobile platforms for the deployment of weapon systems, which can rapidly relocate, providing a significant advantage in a dynamic combat environment. Equipping light trailers with weapon-mounted turrets and other combat modules makes it possible to establish fully functional firing positions for mobile fire groups capable of effectively delivering fire support and engaging enemy aerial targets. Such trailers can be utilized not only with passenger vehicles but also with other types of platforms, including buggies, all-terrain vehicles (ATVs), and specialized unit vehicles. This significantly enhances mobility and the operational employment of firepower assets in various conditions, including complex terrain and confined areas. In addition, a key factor is the economic efficiency of using light trailers compared to alternative solutions such as pick…
subject: Статті
  topic: section
subject: Key words: airspace protection over Ukraine, mobile fire groups, protection of civilian lives, protection of state assets, light trailers.
  topic: keywords
creator: Volodymyr FYSUN
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/wnh5nj60

System for diagnosing the technical condition of internal combustion engines of heavy duty vehicles
type: item
description: The article demonstrates the wide possibilities of using remote automated diagnostics of heavy trucks, in particular, diagnostics of Scania engines. Based on the results of using the functions "Ensuring cylinder balance", "Cylinder balance check" and "Compression check" of the Scania Diagnos 3 & Programmer software, the parameters of the influence of individual cylinders of the DC13 164 L01 engine of the Scania R 450 A4x2NA vehicle on the value of cyclic fuel feed, torque and uniformity of rotation frequency were obtained. The obtained measurement results indicate the existing difference in the efficiency of individual cylinders and the need to eliminate the causes of these differences. Thus, based on the results of the “Cylinder balance check” function, the efficiency of the working strokes in individual cylinders was assessed and an increase in torque of 5 Nm compared to the base torque in cylinders 1, 5 was established; by 1 Nm in cylinder 3; a decrease of 7 Nm and 4 Nm in cylinders 6 and 2, respectively, indicating a significant deterioration in the efficiency of cylinders 6 and 2. At the same time, in cylinder 6, the deterioration was obviously caused by a malfunction of the fuel system elements, and in cylinder 2, it was a consequence of a decrease in the cyclic supply to ensure uniformity of the stroke, which, in turn, leads to a leaner mixture, a decrease in indicator work and, accordingly, torque. The analysis of the actual causes of the influence of cylinder operation on the above-studied indicators can be done on the basis of in-depth physical diagnostics of individual nodes or on the basis of reconstruction of the working process in individual cylinders using a mathematical model of the engine.
subject: Статті
  topic: section
subject: Keywords: diagnostic system, truck, internal combustion engine, engine efficiency, cyclic fuel feed, torque, engine frequency uniformity, compression
  topic: keywords
creator: Oleksandr TYTSKYI
creator: Oleksandr TOKIN
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/tnex5v29

Тhe influence of the trailer center of mass displacement on the motion stability of an articulated bus
type: item
description: Given the rapid increase in the number of vehicles in large cities, which complicates the functioning of passenger transport systems, the issue of their improvement has become particularly relevant. A key direction in this context is reducing the load on the urban road network. The present study focuses on the possible displacement of the center of mass of the trailer unit under conditions of high passenger occupancy in both the bus and trailer bodies during peak hours, which may lead to a deterioration in the motion stability of an articulated bus. It has been established that the eccentricity of the trailer’s center of mass results in an ambiguous effect on the slip and articulation angles of the vehicle combination. When the trailer center of mass shifts outward relative to its instantaneous center of rotation, both the slip and articulation angles increase compared to the case of symmetric loading (ε = 0). Conversely, when the center of mass shifts inward, these angles decrease. Such changes in the slip and articulation angles lead to almost corresponding variations in angular velocity, lateral velocity, and lateral acceleration of the trailer’s center of mass. However, regardless of the displacement of the trailer’s center of mass, at a speed of 10 m/s the articulated bus remains stable. An increase in vehicle speed results in a deterioration of motion stability, and at an eccentricity of ε = 0.2 the vehicle operates at the stability limit (the allowable acceleration of the center of mass should not exceed 0.45g). Unlike transient motion modes (cornering, lane change), in steady-state conditions (straight-line motion), the presence of eccentricity leads to a decrease in critical speed regardless of the direction of displacement. In particular, in the absence of eccentricity the critical speed is Ve=0=0 = 28.12 m/s; with outward displacement Ve=0 = −0.2 = 23.95 m/s; and with inward displacement Ve=0 = 0.2 = 24.89 m/s. These factors must be considered when loadin…
subject: Статті
  topic: section
subject: Keywords: articulated bus, trailer, eccentricity, center of mass, mathematical model, stability, critical speed.
  topic: keywords
creator: Volodymyr SAKHNO
creator: Mykola MAYAK
creator: Roman KHOROSHUN
creator: Andrii KOTENKO
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/0bt3nb30

Analytical review of approaches to ensuring positioning accuracy of industrial robots in welding operations
type: item
description: The article summarizes modern approaches to ensuring the accuracy of positioning of industrial robots in robotic welding. The purpose of the work is a comparative analysis of the repeatability and absolute accuracy of manipulators, as well as factors that determine the deviation of the tool trajectory in real conditions of the welding process. The study is of a review-analytical nature and is based on a systematic analysis of scientific publications, international standards and open technical documentation of leading manufacturers of industrial robots. It is shown that the passport repeatability does not fully reflect the actual welding accuracy, since the real TCP displacement is formed under the combined influence of kinematic, thermal, dynamic and sensor factors. The main sources of error are systematized and the feasibility of dividing them into four groups is established: kinematic, thermal, dynamic and sensor. A generalization of the literature data showed that an increase in temperature in the welding zone by 10-30 °C can cause a shift in the tool trajectory by 0.1-0.5 mm, depending on the length of the manipulator working arm. Within the framework of the generalized computational analysis, it is shown that under moderate conditions the total positioning error can be about 0.24 mm, and during intensive welding it can increase to about 0.50 mm, with the share of the thermal component being one of the dominant ones. The technical solutions used by leading manufacturers are analyzed, in particular kinematic calibration, dynamic motion compensation algorithms, machine vision, adaptive seam tracking and digital trajectory verification. It is substantiated that the most appropriate approach for increasing positioning accuracy is a comprehensive approach that combines calibration, sensor correction, temperature compensation and digital means of process validation. The obtained generalizations can be used for a well-founded choice of technical solutions during the de…
subject: Статті
  topic: section
subject: Keywords: automatic control; mechatronic robot drives; robotic equipment service; influence of thermal effects, design of processing equipment.
  topic: keywords
creator: Liudmyla SAMCHUK
creator: Borys PRYDALNYI
creator: Nataliia HULIIEVA
creator: Viktor SYCHUK
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/2zmncs77

Kinematic analysis of a piston internal combustion engine with a rocker-slider mechanism
type: item
description: The current state of development of the automotive industry is characterized by high requirements for fuel efficiency, environmental friendliness and reliability of internal combustion engines (ICE). Despite the active use of electric vehicles, piston ICEs remain the main source of mechanical energy in most vehicles. One of the key areas for increasing their efficiency is to reduce mechanical losses, minimize inertial loads and improve the kinematic characteristics of the crank mechanism (CKM), which provides the appropriate technical and operational characteristics of these engines. The current trends in the improvement of crank mechanisms are analyzed and it is established that for each specific case, an appropriate engineering calculation method is required, which takes into account all the features of the modernized design of the crank assembly. The method for calculating the kinematics of the rocker-slider mechanism of a piston ICE, which was developed by a team of scientists from the National University of Water Management and Environmental Management, is presented. Expressions for determining the piston displacement, its speed and acceleration depending on the angle of rotation of the connecting rod (crank) are obtained. The results of analytical studies of this engine are presented and graphical dependences of the piston displacement, speed and acceleration on the design parameters of the rocker-slider mechanism are obtained. The results obtained confirm the prospects of using the rocker-slider mechanism as an alternative for internal combustion engines with a traditional rocker-slider design. The proposed methodology can be used for further research into dynamics, optimization of design parameters, and design of new piston internal combustion engines with improved characteristics and greater efficiency.
subject: Статті
  topic: section
subject: Key words: internal combustion engine, crank mechanism, rocker-slider mechanism, piston displacement, speed and acceleration.
  topic: keywords
creator: Oleksandr RYZHYI
creator: Roman IHNATIUK
creator: Oleksandr STADNYK
creator: Serhii MOROZIUK
creator: Dmytro SERILKO
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/4wn7pr53

Formation of an effective cargo delivery system based on optimization of logistics processes
type: item
description: The article examines the modern features of the functioning of logistics systems for cargo delivery in the context of increasing complexity of flow processes, the development of e-commerce and increased requirements for the level of service. It is established that the increase in the volume of batch deliveries leads to an increase in the number of operations, the complication of route networks and an increase in the load on the logistics infrastructure. Based on the analysis of modern research, it is determined that a significant share of logistics costs is formed at the last mile stage and at the points of interaction of elements of the logistics chain, where losses of time and resources occur. The aim of the study is to determine the impact of logistics system parameters on cargo delivery costs and develop practical recommendations for improving the efficiency of its operation. The work uses mathematical modeling and regression analysis methods to assess the impact of key factors, including the density of the retail network, service radius, market share, turnover volumes, and vehicle load factor. The obtained parameter values show the nature of the influence and indicate the presence of rational areas of their values, within which the minimization of logistics costs is achieved. The existence of optimal relationships between the number of points on the route and the radius of half demand is proven. The practical significance of the results is that they can be used to improve the efficiency of logistics planning, optimize delivery routes, and reduce last-mile costs. The results of the study can be applied by retailers and logistics operators in conditions of uncertainty and limited resources.
subject: Статті
  topic: section
subject: Key words: logistics system, logistics costs, last mile; cargo delivery, optimization, logistics network, efficiency, delivery system.
  topic: keywords
creator: Natalia PTYTSIA
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/he175s59

Effective management of urban passenger road transport flows using advanced methods of their forecasting
type: item
description: The paper considers the current issues of increasing the efficiency of urban passenger transport flows management in the context of growing urbanization, intensification of traffic and increasing requirements for the quality of transport services for the population. The need to apply modern approaches to forecasting passenger flows as a key element of management decision-making in urban transport systems is substantiated. Existing forecasting methods are analyzed, in particular statistical, economic-mathematical and intellectual, among which special attention is paid to machine learning methods, neural networks and hybrid models. The main factors influencing the formation and change of passenger flows are identified, including temporal, spatial, socio-economic and infrastructure parameters. An approach to integrating forecasting results into the urban passenger transport management system is proposed, which allows optimizing routes, traffic intervals, vehicle load and reducing operating costs of carriers. The possibilities of using digital technologies, intelligent transport systems and automated dispatching systems to increase the adaptability and efficiency of management are considered. The expected results of the implementation of the proposed solutions are to increase the efficiency of the city's transport system, reduce passenger waiting times, reduce route congestion and improve environmental performance. The results obtained can be used by local governments, transport enterprises and scientists to develop strategies for the development of urban transport on the basis of sustainability and innovation.
subject: Статті
  topic: section
subject:
  topic: keywords
  value: Keywords: traffic flow, urban passenger transportation, traffic management, intelligent transport systems, route optimization, transportation efficiency, forecasting methods, neural networks, Big Data technologies, hybrid models.
creator: Valentyn PRYDIUK
creator: Viktor SAMOSTIAN
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/4dw6p741

Method of managing the quality level of passenger service on urban routes
type: item
description: The paper presents method of managing the quality level of passenger service on urban routes. The quality of passenger transportation forms the standard of living of residents of settlements. The analysis of previous studies has shown that the parameters of their movement were used as indicators in assessing the quality of passenger transportation. Existing methods for assessing the quality of transportation do not allow planning its level. At present, the planning of the passenger transportation process is carried out using technical and operational indicators of vehicle operation. It is advisable to use these indicators for planning the quality of passenger service, which will make it possible to form a list of carriers for city routes that will be able to ensure the achievement of planned values of the parameters of the transportation process when using their rolling stock. The importance of technical and operational indicators as parameters for assessing the quality of passenger service is considered. To form a list of parameters that affect the level of passenger service, a survey of carrier specialists was conducted. The results of the processing of field studies allowed us to identify parameters that can be used to assess the quality of passenger service. Using the method of expert assessments, the significance of technical and operational indicators as quality indicators from the standpoint of transport specialists and their weight coefficients were determined. Based on the obtained values of weight coefficients, an integrated indicator of the level of passenger service quality assessment on city bus routes was developed. The following technical and operational indicators were used as unit indicators of the level of passenger service quality: technical speed, travel interval, route length, capacity utilization factor, traffic regularity factor. The conducted studies allowed mathematically formalizing the change in indicators of the level of passenger service…
subject: Статті
  topic: section
subject: Keywords: quality, passenger, service, route, technical speed, interval, length of journey, capacity utilization factor, traffic regularity factor.
  topic: keywords
creator: Ivan PONTAPLOV
creator: Yurii DAVIDICH
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/0phaaf32

Research on the satisfied demand for truck parking depending on the location and capacity of parking lots on the highway
type: item
description: The article considers the problem of ensuring working and rest conditions for drivers of motor vehicles performing intercity and international transportation. Commercial transport crews, performing intercity and international transportation, must comply with the regulations of the European Union 561/2006, on the one hand, as well as the rules for parking vehicles on the sides of highways. To do this, the capacity of such parking lots in Europe, in Ukraine in particular, is lacking, which would ensure full rest for drivers and protection of vehicles. The known methods of substantiating the capacity of parking lots are reviewed and their shortcomings are identified, which consist in using the assumption of the linear nature of the dependence of the indicators of the efficiency of the use of the parking lot network on the parameters of the traffic flow. To increase the accuracy of the calculation, it was justified to use and develop a method for modeling traffic flows, in which there is a known share of vehicles that must be parked. The method is based on simulation modeling based on cellular automata. The cellular automata in these studies were used in a modified form. The modification consists in using a two-dimensional field with cells of different sizes placed on it. Thanks to the iterative process, the cells move in a fixed field that reflects the section of the highway under study and perform logical maneuvers while maintaining the desired speed. Maneuvers are objectively necessary for each vehicle. An algorithm and a computer program have been developed for simulation modeling of traffic and the parking process. Experiments have been conducted to identify the dependence of parking lot occupancy rates and parking demand satisfaction on the intensity and density of the traffic flow with a known composition. The nonlinear nature of the corresponding dependencies has been clarified. Experiments have also been conducted for increased parking lot capacity. Increasing …
subject: Статті
  topic: section
subject: Keywords: traffic flow, highway, parking capacity, simulation modeling, parking lot occupancy.
  topic: keywords
creator: Myroslav OLISKEVYCH
creator: Igor MUROVANYI
creator: Nazar KHOMYN
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/2dwhv698

Implementation of sustainable urban mobility plans as a tool for achieving sustainable development goal 11 in cities of Ukraine
type: item
description: The existing body of research on the development of urban transport systems demonstrates a growing attention to the problem of ensuring sustainable mobility as one of the key factors of safety, environmental stability, and quality of life in modern cities. The increase in motorization levels, congestion of the street and road network, and the growth of traffic intensity lead to deterioration of traffic conditions, reduced efficiency of public transport, and increased negative environmental impact. In international practice, one of the most effective approaches to solving these problems is the implementation of the concept of sustainable urban mobility, which is realized through Sustainable Urban Mobility Plans (SUMP). This paper presents a systematic analysis of the implementation of Sustainable Urban Mobility Plans in Ukrainian cities with different levels of institutional readiness for the application of SUMP principles. The study is based on a comparative analysis of motorization indicators, modal split, the level of public transport development, and the state of strategic mobility planning. The results reveal a relationship between the existence of an approved sustainable mobility plan and the performance indicators of the urban transport system. It is shown that cities implementing SUMP principles are characterized by a more balanced modal split, a higher share of public transport, and better accessibility of the urban environment. The study identifies that the key factors for successful implementation of sustainable mobility plans include institutional readiness of the municipality, use of transport modeling and digital data analysis systems, integration of transport and urban planning, and involvement of international technical support. The obtained results deepen the understanding of the mechanisms for implementing the concept of sustainable urban mobility and can be used in the development of strategic planning documents for Ukrainian cities in accordance w…
subject: Статті
  topic: section
subject: Keywords: sustainable urban mobility, SUMP, urban transport system, modal split, motorization, transport planning, intelligent transport systems, sustainable development, SDG 11.
  topic: keywords
creator: Viktoriia NYKONCHUK
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/q4j8e727

Calculation of energy costs of mobile technological transport units
type: item
description: The article studies the issues of calculating and increasing the energy efficiency of high-pressure pumps used on mobile units of technological transport. As a promising direction for improving the energy efficiency of the specified mobile units, it is proposed to calculate the energy efficiency of high-pressure pumps of mobile units in order to establish analytical dependencies of energy consumption on changes in the operating temperature of the oil of pumps of units of technological transport. An analysis of modern publications and scientific research devoted to the topic of calculating high-pressure pumps of units of technological transport was carried out, and it was also established that the operation of high-pressure pumps is affected by many adverse factors that lead to an increase in energy consumption, therefore, the development of a mathematical apparatus for determining the energy consumption of mobile pumping units is an effective tool for energy saving. For this reason, the article creates a calculation model of energy consumption of high-pressure pumps of mobile units of technological transport and on its basis an assessment of energy losses of the high-pressure pump HT-400 of the Halliburton Tier IV DGB mobile unit is made. According to the obtained experimental studies, the maximum volumetric efficiency of a serviceable high-pressure pump HT-400 of Halliburton Tier IV DGB pumping units was achieved at a temperature of 53 °C and is equal to 0.89; the maximum volumetric efficiency of a serviceable high-pressure pump according to the calculation model was achieved at a temperature of 55 °C and is equal to 0.87. Based on the obtained experimental results, it is possible to confidently confirm the viability of the calculation model of the energy consumption of a high-pressure pump of mobile units of technological transport.
subject: Статті
  topic: section
subject: Keywords: calculation of high-pressure pumps, waste heat recovery; technological transport; engine; fuel economy, energy efficiency; volumetric efficiency
  topic: keywords
creator: Oleg MYSIV
creator: Sviatoslav KRYSTOPA
creator: Andriy DOBUSH
creator: Andriy SEMIANCHUK
creator: Nadiya RADZIKHOVSKA
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/71ts7v21

Systematization of approaches to parameters settings of genetic algorithms for optimizing public transport schedules
type: item
description: The research investigates the problem of the practical implementation efficiency of genetic algorithms (GAs) for public transport schedule synchronization, specifically focusing on the impact of heuristic parameter selection. The purpose of the research is to systematically summarize contemporary scientific approaches to justifying the parametric tuning of genetic algorithms for synchronizing public transport timetables, and to identify the specifics of parameter selection in research aimed at improving the efficiency and reliability of solutions under variable transport network operating conditions. The study employs methods of systemic and comparative analysis of current scientific works dedicated to the use of GAs in transport schedule optimization problems. The findings of current scientific works on the influence of GAs parametric tuning on its functional capacity and result relevance in solving the timetable synchronization problem have been systematized. The key GAs tuning parameters that form the architecture of the computational process were identified: population size, crossover probability, and mutation probability. It was established that in the majority of analysed scientific works these parameters are determined empirically without adequate theoretical justification, indicating the need to develop methodological approaches to their selection. A critical analysis of existing works revealed that researchers pay insufficient attention to the heuristic selection of GAs parameters when solving the public transport timetable synchronization problem, which limits the reliability of algorithmic solutions under variable transport network operating conditions. A promising direction for further research was identified, consisting in the development of adaptive GAs parameter tuning strategies to enhance solution efficiency and reliability in line with real public transport operating conditions. The practical significance of the study lies in its systematized analy…
subject: Статті
  topic: section
subject: Keywords: public transport, schedule synchronization, genetic algorithm, parameters tuning, systematic analysis
  topic: keywords
creator: Yuliia MELNIKOVA
creator: ОДРА ORDA
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/2r6v8v17

Research on the economic efficiency of using biogas fuel with commodity gasoline in the 7th generation hbo power supply system
type: item
description: The authors have conducted a study of the economic efficiency of using biogas fuel in a mixture with commercial gasoline. In the process of using natural gas in internal combustion engines, a number of difficulties arise related to the adaptation of the engine and its systems. However, the prospect of using biogas fuel has significant economic and environmental feasibility, and therefore is extremely important. Until recently, it was extremely difficult to ensure the simultaneous supply of liquid and gaseous phases of fuel, but the 7th generation gas cylinder equipment (GCB) for direct injection engines provides fuel supply simultaneously in the liquid phase (through gasoline injectors) and the vapor phase (into the intake manifold). Therefore, the study of the economic efficiency of using biogas fuel with commercial gasoline in the 7th generation GCB power supply system is quite relevant. At the initial stage, we obtained a coefficient that takes into account the increase in fuel mixture consumption due to the lower calorific value of biogas. With an increase in the share of biogas in fuel from 10 to 50%, the fuel consumption coefficient increases from 1.05 to 1.31. We also obtained the dependence of the change in the price of used commercial gasoline in fuel mixtures depending on the percentage content of biogas fuel in them. For the adopted prices for commercial gasoline and biogas, the conducted studies show that with an increase in the percentage content of biogas in equivalent fuel to 50%, an increase in the economic efficiency of its use is achieved due to the use of low-octane gas and, as a result, the cost of the resulting fuel decreases from 5.8% to 30%. Therefore, the use of biogas in internal combustion engines is promising both in view of the reduction in the price of gasoline used in fuel mixtures and with the development of HBO technologies.
subject: Статті
  topic: section
subject: Keywords: renewable sources, biogas, fuel, economy, efficiency, use, gas cylinder equipment
  topic: keywords
creator: Vasyl MELNYK
creator: Fedir KOZAK
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/qx7gdh81

Improvement of mathematical models of the interaction of vehicle wheels with a roller traction stand.
type: item
description: As is known, currently the most widespread are stands with running drums (roller stands). When testing on them, each wheel rests on two parallel rollers of small diameter. They are quite simple in design, compact, create high adhesion forces in contact between the tire and the roller, ensure a stable position of the car during traction tests, and allow testing in stable or dynamic modes, at different speeds. In most cases, both wheels of one axle are tested simultaneously on the stand. Such stands are called single-axle. The stand layout is called symmetrical if the front and rear rollers are located at the same height, asymmetrical – otherwise. Often the front and rear rollers of each pair are connected to each other using a mechanical power transmission – chain or V-belt. The design of the roller block must ensure the implementation of the specified traction force on the drive wheels during testing; a stable position of the car on the stand during testing; the ability of the car to leave independently after the end of the tests; and prevent increased tire wear during testing. The article considers the conditions for the implementation of traction force, which are determined by the roller arrangement schemes (symmetrical and asymmetric) taking into account the angles between the vertical and the line connecting the centers of the wheel and rollers – <!-- [if supportFields]> QUOTE <![if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f"> <v:stroke joinstyle="miter"/> <v:formulas> <v:f eqn="if lineDrawn pixelLineWidth 0"/> <v:f eqn="sum @0 1 0"/> <v:f eqn="sum 0 0 @1"/> <v:f eqn="prod @2 1 2"/> <v:f eqn="prod @3 21600 pixelWidth"/> <v:f eqn="prod @3 21600 pixelHeight"/> <v:f eqn="sum @0 0 1"/> <v:f eqn="prod @6 1 2"/> <v:f eqn="prod @7 21600 pixelWidth"/> <v:f eqn="sum @8 21600 0"/> <v:f eqn="prod @7 21600 pixelHeight"/> <v:f eqn="sum @10 21600 0"/> </v:formulas> <v:path…
subject: Статті
  topic: section
subject: Keywords: traction roller stand, maximum traction force, normal reaction, mathematical model, torque, load utilization factor.
  topic: keywords
creator: Ihor MARMUT
creator: Volodymyr ZUIEV
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/srt52b88

Resonant automotive heat pump: principle of operation, efficiency, and implementation prospects
type: item
description: The article investigates the concept of a resonant automotive heat pump as an innovative component of vehicle thermal management systems. The proposed system includes a heat exchanger for interaction between the working fluid and ambient air with extraction of low-grade heat, a steam engine serving as a primary or auxiliary drive in combination with an electric generator, as well as a system for preliminary cooling of the working fluid. In addition, a deep-cooling heat exchanger based on a magnetodynamic system is incorporated, which can operate either as an electric motor or as an auxiliary generator to supply power to control systems and auxiliary electrical equipment. It has been established that the application of a resonant approach makes it possible to reduce energy losses, increase the coefficient of performance of the heat pump, and improve the overall energy efficiency of the vehicle. Particular attention is paid to the prospects of integrating resonant heat pumps into electric vehicles and hybrid transport systems in accordance with modern environmental and energy-saving requirements. The physical principles of heat pump operation are analyzed, and the possibility of improving their efficiency through the use of resonant modes in mechanical, hydrodynamic, and electromagnetic subsystems is substantiated. A theoretical analysis of the influence of resonance on heat transfer processes and energy consumption is carried out, and a mathematical model describing the conditions for achieving the resonant operating mode of the compressor is proposed. It is shown that the use of resonant modes in combination with multi-channel energy conversion ensures improved system efficiency, intensification of heat and mass transfer processes, and reduction of energy losses. The proposed technical solution is aimed at more efficient conversion of various types of energy and a significant reduction in the weight and size characteristics of the vehicle power system. An analysis o…
subject: Статті
  topic: section
subject: Keywords: heat pump, resonance, automobile, energy efficiency, coefficient of performance, thermal management, deep cooling
  topic: keywords
creator: Nadiia KYTS
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/nsn20y09

The use of a front hitch system on a self-propelled tractor chassis to enhance its versatility and efficiency
type: item
description: The modern development of agriculture and municipal infrastructure requires the use of efficient, cost-effective, and environmentally safe equipment. One of the most promising areas in the mechanization of small farms and municipal services is the use of versatile self-propelled tractor chassis, which combine maneuverability, ease of operation, and minimal operating costs. Due to rising fuel costs and the increasing cost of large, energy-intensive wheeled tractors, as well as the high operating costs associated with their maintenance, self-propelled tractor chassis are becoming a competitive alternative to traditional tractors. Tractor self-propelled chassis in the 0.6 traction class (6 kN) feature compact dimensions, sufficient power, and versatility in use. This makes them effective for performing a wide range of tasks on small-scale farms, private estates, greenhouse complexes, as well as in municipal enterprises—for cleaning areas, maintaining green spaces, transporting small loads, and performing seasonal work. However, the basic configuration of the self-propelled tractor chassis limits its potential functionality, creating a need to expand the range of interchangeable attachments. One of the key components that significantly enhances the versatility and efficiency of a self-propelled tractor chassis is the front hitch. It allows for the attachment of a wide range of equipment: from street-cleaning brushes and plows to tillers, mowers, and lifting devices for agricultural use. Modern requirements for hitch systems call for increased reliability, the ability to quickly change equipment, compatibility with the power characteristics of the self-propelled tractor chassis, and the provision of safe working conditions for the operator.
subject: Статті
  topic: section
subject: Key words: self-propelled tractor chassis; front hitch; traction calculation; hitch system; design; engineering.
  topic: keywords
creator: Volodymyr KRASNOKUTSKYI
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/7emhtb50

Analytical assessment of the interaction between tyre and ground surface
type: item
description: The paper addresses the agroecological assessment of soil compaction caused by the wheels of machine–tractor aggregates, taking into account real operating conditions of their interaction with deformable supporting surfaces. It is shown that the existing regulatory framework is based on tire contact patch areas determined on rigid surfaces under nominal wheel loads and inflation pressures, which does not adequately reflect actual operating conditions on soils. It is substantiated that on soil surfaces the contact area is larger and depends on soil type and condition, wheel load, and tire inflation pressure. Based on an analysis of recent studies and the results of experimental measurements of the contact patch area for commonly used tractor tire sizes, empirical relationships for calculating the tire–soil contact area were evaluated and compared with experimental data. The formation of contact pressure, rut depth, and changes in these parameters during the passage of subsequent axles were also investigated. An analysis was performed of the influence of tire size, inflation pressure, and wheel load on the characteristics of interaction with soils of different hardness, assessed using the cone index (CI). The obtained results can be used to refine regulatory approaches to the agroecological assessment of the impact of wheeled machinery on the soil supporting surface.
subject: Статті
  topic: section
subject: Keywords: machine–tractor aggregates, vehicles, off-road conditions, wheel, mobility, contact patch, soil compaction, agroecology, cone index (CI), tire inflation pressure, tire size.
  topic: keywords
creator: Lybomyr KRAINYK
creator: Dmytro RUBAN
creator: Oleh SUKACH
creator: Oleh MURONYUK
creator: Orest KUBAI
creator: Andrii PASTERNAK
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/07wmtd74

Experimental investigation of light commercial vehicle traction-speed properties
type: item
description: The article focuses on the experimental determination of the traction-speed properties of a light commercial vehicle in a passenger variant with a modified transmission for the further confirmation of the adequacy of the developed mathematical model of motion. The features of the production and operation of modern light commercial vehicles are analyzed. It is established that the high degree of unification and the widespread practice of converting cargo variants into passenger ones results in a discrepancy between the parameters of powertrains and transmissions and the actual operating conditions. It is determined that one of the ways to eliminate such a mismatch is to modify the transmission gear ratios. Since such a modification affects the performance properties of the vehicle, there is a need to study its traction-speed properties through road tests. The methodology of conducting experimental research using a measuring complex of high-frequency satellite telemetry with a sampling frequency of 10 Hz is proposed and applied. The experimental study involved a Volkswagen Caddy vehicle in a passenger variant, equipped with a dual-clutch transmission (DCT) with modified gear ratios of the higher gears. The test runs were performed for two mass variants: curb weight (including the driver and measuring equipment) and gross vehicle weight. Based on the results of a series of test runs, the traction-speed properties were established. It is proven that an increase in the vehicle mass to the gross vehicle weight leads to a deterioration in the traction-speed properties: specifically, the acceleration time to a speed of 100 km/h increases by 34.3%, and the acceleration distance by 35.7%. An analysis of the smoothed curves of longitudinal acceleration confirmed that acceleration occurs with virtually no power interruption due to the high operating speed of the dual-clutch transmission.
subject: Статті
  topic: section
subject: Keywords: light commercial vehicle, experimental research, traction-speed properties, acceleration dynamics, road tests, satellite telemetry, transmission modification.
  topic: keywords
creator: Oleksii KORPACH
creator: Andrii TRUBENOK
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/8bvgja63

Transport efficiency, project analysis and potential of transport enterprises
type: item
description: Operations research in the transport systems of international freight transportation is an important tool for improving the efficiency of logistics processes in the context of the globalization of the world economy. International transportation is characterized by complex routes, customs procedures, diverse regulatory requirements of different countries, currency risks, and a high dependence on external factors (political, economic, infrastructural).Operations research methods make it possible to optimize transportation routes, minimize transport costs, reduce delivery time, and increase the reliability of logistics chains. The most commonly applied methods include linear and integer programming, transportation models, network planning, queuing theory, simulation modeling, and heuristic algorithms.Special attention is paid to the problems of selecting the optimal mode of transport (road, rail, sea, air, or multimodal), forming an efficient route network, risk management, and coordination of international logistics flows. The implementation of modern information systems, digital platforms, and monitoring technologies contributes to increased transparency of transportation processes and enhances the efficiency of managerial decision-making.Thus, the application of operations research methods in the field of international freight transportation ensures the rational use of resources, improves the competitiveness of transport enterprises, and promotes the integration of national transport systems into global logistics networks.The article examines the application of operations research methods in the transport systems of international freight transportation. The specific features of the functioning of international transport and logistics systems as complex socio-economic and technical systems are analyzed. The main optimization tasks arising in the process of planning and managing international freight transportation are identified. Particular attention is paid to the u…
subject: Статті
  topic: section
subject: Keywords: operations research, international freight transportation, transport systems, optimization, logistics, modeling, transport management
  topic: keywords
creator: Svitlana KOZAK
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/5zmgma85

Comprehensive Analysis of Service Infrastructure for Specialised Rolling Stock on Truck Chassis in The Vinnytsia Region
type: item
description: The article presents a comprehensive analysis of the infrastructure of the service market for specialised rolling stock on truck chassis in the Vinnytsia region. The study is based on a systemic approach to assessing service potential and identifying structural imbalances in its development. The authors have developed a morphological matrix of service capabilities, which revealed significant asymmetry: despite the high saturation of the market with used equipment (over 90%) and an extensive network of fuel hubs (around 85%), there is a shortage of high‑tech logistics nodes such as “dry ports” and specialised recreational infrastructure for vehicle personnel (only 35–40%). The necessity of legal standardisation of superstructure services in accordance with the classification NACE 33.12 is substantiated, ensuring market transparency and enhancing its integration into international standards. Innovative models of infrastructure modernisation are proposed, based on the application of the Uber‑model of mobile service, augmented reality technologies for diagnostics and staff training, as well as the concept of predictive maintenance. Strategic directions for decentralising service capacities, developing multimodal logistics centres, and integrating regional infrastructure into the European transport space are outlined. The practical significance of the study lies in establishing methodological foundations for optimising the service market, improving the efficiency of rolling stock utilisation, and strengthening the competitiveness of the transport system of the Vinnytsia region.
subject: Статті
  topic: section
subject: Key words: specialised rolling stock, service infrastructure, technical operation, spare parts logistics, digitalisation, predictive maintenance, augmented reality technologies
  topic: keywords
creator: Andrii KASHKANOV
creator: Vitalii KASHKANOV
creator: Vyacheslav VARCHUK
creator: Alla DMYTRIIEVA
creator: Mykola MOSKALIUK
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/peyjvm07

Research of a Diesel-to-Gas Converted Engine Operating on Propane–Butane
type: item
description: Gas engines represent a promising direction in the development of modern transport due to the combination of high environmental performance and economic feasibility of their use. Gaseous fuels provide more complete and uniform combustion, which contributes to the reduction of harmful emissions, improvement of engine performance characteristics, decrease in operating costs, and extension of the service life of power units. Propane–butane has a number of advantages over natural gas when used in automotive applications. An analysis of its physicochemical properties indicates high values of the calorific value both of the fuel itself and of the fuel–air mixture, while its octane number is only slightly lower than that of natural gas. The D-243 diesel engine was converted into a spark-ignition gas engine designed to operate on propane–butane using the same technology as for natural gas conversion. However, the compression ratio was reduced to 11. Bench tests of the converted gas engine confirmed its operability. The power output of the gas engine remains at the level of the base diesel engine, while the hourly fuel consumption is slightly higher due to operation with richer air–fuel mixtures. Emissions of carbon monoxide and hydrocarbons are somewhat higher; however, soot is absent in the exhaust gases. Therefore, the overall toxicity of the exhaust gases of the gas engine is lower compared to that of the diesel engine. When switching to gaseous fuel, the costs of fuel and lubricants are reduced by nearly two times. The payback period for the conversion ranges from 9 to 16 months. Under these conditions, it is more advisable to convert automotive and agricultural machinery to operate on propane–butane, as its cost is lower compared to natural gas, the conversion expenses are also lower, and there is no reduction in the vehicle’s payload capacity.
subject: Статті
  topic: section
subject: Keywords: diesel engine, gas engine, conversion, propane–butane, gaseous fuel, fuel consumption, environmental performance
  topic: keywords
creator: Victor ZAKHARCHUK
creator: Oleg ZAKHARCHUK
creator: Mykola SKALIGA
creator: Andrii TSYPYASHCHUK
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/debvys76

Digital twin of a multimodal transport hub for adaptive management of passenger and freight flows in real time
type: item
description: The article investigates improving the efficiency of operational management of a multimodal transport hub under variable demand, competition between passenger and freight flows for shared resources, and random disturbances. The aim of the study is to develop a conceptual and methodological framework for a digital twin that supports real-time dispatching decisions through a combination of monitoring, short-term forecasting, scenario testing, and multi-criteria optimization. An integrated hub-state model is proposed, accounting for demand, infrastructure saturation, transfer time, cargo-handling duration, and data quality. Within the control loop, actions are selected by minimizing weighted losses with robust risk adjustment, which makes it possible to filter out unstable decisions. For verification, a computational experiment was conducted on a test hub in two modes: baseline rule-based control and scenario-adaptive control within the digital twin loop. The results demonstrate improvements in key indicators, including lower average delays, a smaller share of congested zones, shorter transfer and cargo-handling times, and a higher stability index. Under a stress scenario, the approach showed stronger robustness, with lower peak overloads and faster recovery to normal operation. The practical value lies in supporting dispatcher decisions and phased integration into existing urban transport monitoring platforms. The findings confirm that controlling telemetric data quality and coordinating information flows are critical for forecast accuracy, recommendation reliability, and dispatcher support during peak loads and uncertainty.
subject: Статті
  topic: section
subject: Key words: digital twin, multimodal transport hub, adaptive control, passenger flows, freight flows, multi-criteria optimization, efficiency, dispatching decisions, real-time operation.
  topic: keywords
creator: Kostiantyn DOLIA
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/emwxn052

About the safety parameters of a car in the event of a shock absorber's deterioration
type: item
description: Historically, suspension originated and developed on vehicles as a means of ensuring comfort. In horse-drawn carriages of the past, a spring suspension was used in the chassis. With the transition to mechanical traction, speeds of movement and requirements for the chassis increased, and suspensions grew significantly. Thus, the suspension, the initial purpose of which was to ensure comfortable movement, with increasing vehicle speeds acquired a very important function - traffic safety. The second purpose turned out to be so important that it pushed the function of ensuring comfort into the background. The suspension of a passenger car, which largely determines its class, as a component is included in the chassis and contains guide, elastic and damping components. In turn, the elastic component can be a spring, air spring, torsion or coil spring. The damping component is represented by a telescopic shock absorber. The tire, as a suspension element, has an elastic and damping effect. In ensuring comfort, the most important role is played by the elastic and damping parts, which form an oscillatory system with certain parameters. Being sufficiently loaded parts of the suspension, they perceive shock loads and determine its frequency, operational parameters, and resource. The damping part - the shock absorber - plays a key role in the formation of both operational properties, having relatively lower reliability and resource. In this work, an attempt is made to determine the ratio of properties through the values ​​of the corresponding criteria for different technical conditions of the shock absorber. The EuSAMA coefficient and the root-mean-square value of the vibration complication (according to DSTU ISO 2631-1:2004) were chosen as criteria.
subject: Статті
  topic: section
subject: Keywords: traffic safety, shock absorber, vibration safety, simulation modeling
  topic: keywords
creator: Oleksandr DITYATYEV
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/njj6gs35

Research on the impact of the technical condition of diesel engine air intake system components on passenger car fuel consumption
type: item
description: This article investigates the impact of the technical condition of air intake system components on the fuel economy of diesel-powered passenger cars. The correlation between the aerodynamic resistance of the intake system and changes in specific fuel consumption is substantiated. Based on experimental data, the authors analyzed the consequences of operational air filter clogging and the loss of intake pipe integrity (leaks). The study highlights that the air filter is one of the most critical elements of the intake system, as its condition and throughput capacity directly influence engine performance parameters. Increased filter resistance, caused by clogging or the use of low-quality replacements, leads to distorted MAF (Mass Air Flow) sensor readings, disruption of the air-fuel ratio, reduced combustion efficiency, and increased fuel consumption. This issue is particularly relevant for commercial vehicles operating in high-dust environments, under intensive use, and with extended service intervals. Underestimating the impact of air filter resistance on the fuel system can lead not only to a 5–10% increase in fuel consumption but also to accelerated wear of Common Rail (CR) system components (high-pressure fuel pumps, injectors, pressure regulators), which in turn increases corporate operating expenses. Quantitative dependencies between the increase in fuel consumption and the degree of intake tract throughput reduction have been established. The research results can be applied to improve maintenance schedules and enhance the diagnostic efficiency of modern internal combustion engine (ICE) air supply systems.
subject: Статті
  topic: section
subject: Key words: diesel engine, air intake system, fuel consumption, technical condition, aerodynamic resistance, fuel economy.
  topic: keywords
creator: Yurij GORBIK
creator: Sergy KRIVOSHAPOV
creator: Daniil PISKOVSKY
rights: Copyright (c) 2026 ADVANCES IN MECHANICAL ENGINEERING AND TRANSPORT
date: 2026-05-11
publication date: 2026-05-11
doi: 10.36910/d12qa721