Wyniki wyszukiwania - BazTech

1

Pojazd zdalnie sterowany - projekt i realizacja

Olbryś Piotr, Piotrowski Robert

Pomiary Automatyka Robotyka

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2025

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R. 29, nr 2

59--66

PL

Pojazdy zdalnie sterowane są stosowane w wielu dziedzinach życia, między innymi w edukacji, ratownictwie oraz wojsku. W artykule przedstawiono proces projektowania i wykonania zdalnie sterowanego pojazdu. Opisano część mechaniczną i elektryczną projektu pojazdu. Przedstawiono etap programowania jednostki sterującej oraz przygotowania aplikacji mobilnej. Przeprowadzono również testy zaimplementowanych algorytmów sterowania.

EN

Remote controlled vehicles find applications in various areas of life, including education, rescue operations, and the military. This article outlines the process of designing and implementation of remotely controlled vehicle. The mechanical and electrical aspects of the vehicle project are described, along with programming of the control unit and mobile application. Tests of implemented control algorithms are also conducted.

2

Intelligent Engine Health Monitoring System for Enhanced Vehicle Performance

Dubey Yogita, Damahe Khushal, Ambule Usha, Alone Sanskruti, Deshpande Tanaya, Umate Roshan

Journal of Machine Engineering

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2025

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Vol. 25, No. 2

89--99

EN

In traditional vehicle maintenance, there’s often no real-time data available, leaving drivers in the dark about important health and safety parameters. This gap can cause problems like low oil levels, poor oil quality, and overheating, which can put the vehicle and passengers at risk. This paper presents the intelligent engine health monitoring system for enhanced vehicle performance. The system uses ESP8266, ultrasonic sensor, light dependent resistor (LDR), and DS18B20 temperature sensors for continuous monitoring of the oil level, oil quality assessment, and engine temperature measurement in real-time. Oil quality assessment using RGB and white light transmission through a glass tube is proposed with improved accuracy in degradation detection. Blynk app interface in the proposed system produces the instant alert for exceeding threshold limit of sensor to ensures enhanced vehicle performance. Results demonstrate that blue light detects early-stage oil degradation, green light provides a balanced evaluation, and red light identifies severe degradation. A comparative analysis with optical color sensors and ultrasonic-based oil detection highlights the system's higher adaptability and real-time monitoring capabilities.

3

Comparison of gantry drive and crankset: a pilot study across a broad power spectrum

Bereś Łukasz, Obszański Marcin, Pyrzanowski Paweł

Engineering Transactions

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2025

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Vol. 73, iss. 4

659--685

EN

The gantry drive was originally invented in 1948 in England and was “rediscovered” in Poland in 2019 while working on lightweight, personal, compact vehicles. In this study, the gantry drive is subjected to dynamic tests against the background of the commonly known crankset. The aim of the dynamic tests is to develop power curves and measure efficiency for various human-mechanism systems, i.e., the hand-driven crankset, the leg-driven crankset, and the gantry drive. Pilot dynamic tests have shown many advantages of the gantry over the crankset; in general, test participants were much less tired when using the gantry drive.

4

Electric vehicles charging stations and their influence on the electricity utility grid

Christoforidis Chariton, Christakis Ioannis, Kotzasavva Fotini, Fousekis Grigorios, Rimpas Dimitrios

Archiwum Motoryzacji

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2025

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Vol. 107, nr 1

102--126

EN

The adoption of electric vehicles (EVs) has emerged as a significant measure to reduce greenhouse gas emissions and promote cleaner transportation towards the goal of decreasing temperature increase over 0.5°C by 2050. The evolution of battery technology allows for massive exploitation of EVs as they require low maintenance and have over 200% higher efficiency in total than conventional vehicles. However, the need for rapid implementation of charging stations poses unique challenges for electrical distribution networks. This paper investigates the influence of electric vehicle (EV) charging stations on the electricity utility grid, focusing on their technological frameworks. The capabilities and challenges of lithium-ion battery technologies are examined, including their high energy density and reliability, while addressing concerns over performance limitations due to aging cause by high temperatures. The work outlines current charging technologies, classifying them into AC and DC wired systems, wireless charging methods, and battery exchange systems. Rapid advancements have reduced charging times to 10–15 minutes for 80% capacity using high-voltage systems. Furthermore, the integration of Vehicle-to-Grid (V2G) systems, where the EV as an separate energy storage system exchanges power with the utility grid, was found to reduce peak load by over 4% and improve energy efficiency, lowering energy costs by 40% and scheduling costs by 14%. V2G technology enables real-time bidirectional energy transfer, supporting grid stability and sustainability. Challenges such as communication reliability, data privacy, and battery degradation due to increased charging cycles were discussed. The study concludes that the adoption of EVs and their integration with utility grids through V2G systems presents a promising approach to enhance sustainability, although overcoming technical challenges and optimizing battery life are crucial for widespread implementation. The findings emphasize the pivotal role of aggregators in managing power exchanges, predicting load fluctuations, and ensuring a reliable energy supply.

5

Failure Detection of Powertrain Components in Motor Vehicles Using Vibroacoustic Methods

Kriston József Balázs, Jálics Károly

Archives of Acoustics

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2025

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Vol. 50, nr 1

37--45

EN

Although noise and vibration measurements are widespread in the machine diagnostics, they are not usedin the diagnostics of the powertrain of motor vehicles. Our research aims to investigate the possibilities, advan-tages, and drawbacks of using noise and vibration diagnostics performed for motor vehicles. In this paper, weattempt to use vibroacoustic signals from a motor vehicle for diagnostic purposes. Ordinary audible malfunc-tions, for example, misfiring in a passenger car, were artificially created. The differences between the normaland faulty operating conditions were examined to identify evidence of failure in the vibration signal. Primarily,evaluation through Fourier transformation was performed to provide a visual correlation between the fault andthe vibration behavior of the car. Detailed conclusions from the measurements and future research plans arediscussed.

6

Application of the nondestructive and destructive research to disclose identification marks on vehicles

Konieczny Jarosław, Labisz Krzysztof, Majchrzak Aleksandra, Atapek Şaban Hakan

Advances in Science and Technology. Research Journal

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2025

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Vol. 19, no. 4

280--293

EN

Disclosure of removed or illegible identification marks occurs when the need arises to establish the origin of the object or to attempt to alter the original designation. In order to make it difficult to identify the subject, the offender removes all the marks characterizing the subject while applying the new mark. In addition to the most primitive character removal methods, there are those that make it difficult to evaluate the removal of the original sign. The publication presents selected methods of destructive and non-destructive testing which are used in forensic vehicle identification. The results of research on the detection of forgeries of vehicle identification numbers obtained using the methods discussed are presented in the publication. The presented results illustrate how easy it is to disclose attempts to process car numbers. As a result of the performed tests, the forgeries of the VIN (Vehicle Identification Number) were revealed by the chemical method in the Hyundai Tucson car and the magnetic method in the Nissan car. In addition, using the thermal method, a forgery of the engine number of the Daewoo Matiz car was revealed. In turn, in the Audi A6 car, an attempt was made to counterfeit the VIN using the permanent magnetic method, and the method of replicas was disclosed.

7

Wykorzystanie strumieni danych cyfrowych do sterowania procesem eksploatacji pojazdów wojskowych

Ceremuga Michał, Kończak Jarosław, Wesołowski Mariusz

Przegląd Komunikacyjny

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2024

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R. 79, nr 2/3

32--38

PL

Współczesne pojazdy wykorzystują do sterowania pracą układów i zespołów elektroniczne sterowniki, które komunikują się ze sobą w pokładowych sieciach informatycznych. Istnieje możliwość pozyskiwania strumienia przesyłanych danych poprzez rejestrowanie go w dodatkowym urządzeniu. Pozyskane z rejestratora dane cyfrowe przenoszone są do serwera z bazą danych, gdzie następuje ich obórka. Skumulowane raporty pozwalają na odpowiednie sterowanie procesem eksploatacji pojazdów wojskowych. W artykule przedstawiono założenia systemu informatycznego i wyniki analiz parametrów eksploatacyjnych pojazdów wyposażonych w rejestratory eksploatacyjne. Omówiono również możliwe warianty budowanego systemu analizy niezawodności pojazdów wojskowych. Opisano strukturę oraz podstawowe funkcjonalności.

EN

Modern vehicles use electronic controllers to control the operation of systems and assemblies that communicate with each other in on-board IT networks. It is possible to obtain a stream of transmitted data by recording it in an additional device. Digital data obtained from the recorder are transferred to a server with a database, where they are processed. Cumulative reports allow for appropriate control of the process of operating military vehicles. The article presents the assumptions of the IT system and the results of analyzes of operational parameters of vehicles equipped with operational recorders. Possible variants of the built reliability analysis system for military vehicles were also discussed. The structure and basic functionalities are described

8

The performance of a developed diesel vehicle to run on WCO biodiesel at variable speeds and loads

Ibrahim Said M. A., Abed Kamal A., Gad M.S., Mustafa Hassan M.M.

Polityka Energetyczna

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2024

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T. 27, z. 2

105--128

EN

Vehicle emissions and performance fueled with waste cooking oil biodiesel is the main topic of this research. Biodiesel was produced through transesterification with physical and chemical characteristics comparable to diesel. B20 is a methyl ester of 20% blended with diesel. A diesel vehicle was modified and equipped with all measuring instruments needed to perform all experiments. The variable speed and load tests were conducted on the vehicle to measure the performance and emissions at different loads (0–30 kW) and different speeds (0–33 km/h). The vehicle speed was the maximum attained for each gear with a constant fuel flow rate without external fuel control at a steady state. At a vehicle speed of 33 km/h, the greatest increases in fuel consumption and exhaust gas temperature for biodiesel B20 were 17 and 6%, respectively, as related to pure diesel. At a vehicle speed of 33 km/h, B20 reduced the distance traveled, carbon monoxide and hydrocarbon concentrations compared to diesel by 22, 9 and 10%, respectively. At a vehicle speed of 33 km/h, the increases in nitrogen oxides and oxygen concentrations of B20 were 4 and 3% higher, respec-tively, than crude diesel over the whole tested load range. The biggest increases in distance, fuel consumption, and exhaust gas temperature for B20 over diesel were 13, 3, and 2%, respectively, at a vehicle load of 30 kW. The B20 blend decreased CO and hydrocarbon emissions related to diesel by 17 and 32%, respectively, at a vehicle load of 30 kW. The increases in nitrogen oxides and oxygen concentrations of B20 across the whole load range were 11 and 3% higher than pure diesel at a vehicle load of 30 kW, respectively. Biodiesel blend B20 is suggested for application in vehicles providing that the vehicle is moderately loaded.

PL

Głównym tematem badań podjętych w niniejszym artykule są emisje i osiągi pojazdów napędzanych biodieslem odpadowym z oleju spożywczego. Biodiesel powstał w procesie transestryfikacji o właściwościach fizycznych i chemicznych porównywalnych z olejem napędowym. B20 to 20% ester metylowy zmieszany z olejem napędowym. Zmodyfikowano pojazd z silnikiem diesla i wyposażono go we wszystkie przyrządy pomiarowe potrzebne do przeprowadzenia wszystkich eksperymentów. Przeprowadzono testy zmiennej prędkości i obciążenia pojazdu, aby zmierzyć jego osiągi i emisję przy różnych obciążeniach (0–30 kW) i różnych prędkościach (0–33 km/h). Prędkość pojazdu była maksymalną osiąganą na każdym biegu przy stałym natężeniu przepływu paliwa bez zewnętrznego sterowania paliwem w stanie ustalonym. Przy prędkości pojazdu wynoszącej 33 km/h największe wzrosty zużycia paliwa i temperatury spalin dla biodiesla B20 wyniosły odpowiednio 17 i 6% w porównaniu do czystego oleju napędowego. Przy prędkości pojazdu wynoszącej 33 km/h B20 zmniejszył przebyty dystans oraz stężenie tlenku węgla i węglowodorów w porównaniu do oleju napędowego odpowiednio o 22, 9 i 10%. Przy prędkości pojazdu wynoszącej 33 km/h przyrosty stężeń tlenków azotu i tlenu B20 były w całym badanym zakresie obciążeń odpowiednio o 4 i 3% większe niż w przypadku surowego oleju napędowego. Największy wzrost zasięgu, zużycia paliwa i temperatury spalin dla B20 w porównaniu z olejem napędowym wyniósł odpowiednio 13, 3 i 2% przy obciążeniu pojazdu 30 kW. Mieszanka B20 zmniejszyła emisję CO i węglowodorów związaną z olejem napędowym odpowiednio o 17 i 32% przy obciążeniu pojazdu 30 kW. Wzrosty stężeń tlenków azotu i tlenu B20 w całym zakresie obciążenia były odpowiednio o 11 i 3% wyższe niż w przypadku czystego oleju napędowego przy obciążeniu pojazdu 30 kW. Mieszankę biodiesla B20 zaleca się stosować w pojazdach pod warunkiem, że pojazd jest umiarkowanie obciążony.

9

Requirements for the content of harmful substances in market products of plastics and rubber. Part V. Vehicles and their equipment

Kolasa Dorota, Stępkowska Aneta, Wróbel Justyna, Samsonowska Katarzyna, Kaszuba Alicja, Wróbel Kamil, Lach Jakub

Polimery

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2024

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Vol. 69, nr 7-8

438--449

EN

This article continues the review of applicable regulations on the safety of products placed on the European Union (EU) market. Part V regarding the regulations on the control of hazardous substances in vehicles, including their components and equipment made of plastics and rubber, covers EU regulations and national acts adapting Polish law to EU legislation in this area.

PL

Artykuł stanowi kontynuację przeglądu obowiązujących przepisów dotyczących bezpieczeństwa produktów wprowadzanych na rynek Unii Europejskiej (UE). Część V dotycząca przepisów w zakresie kontroli substancji niebezpiecznych w pojazdach, w tym ich elementach i wyposażeniu wykonanych z tworzyw sztucznych i gumy, obejmuje regulacje unijne oraz akty krajowe dostosowujące prawo polskie do prawodawstwa UE w tym zakresie.

10

The problem of cold start emissions from vehicles

Laskowski Piotr, Zimakowska-Laskowska Magdalena, Matej Jan, Wiśniowski Piotr

Combustion Engines

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2024

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R. 63, nr 4

43--51

EN

The progression of passenger vehicles is progressing, and regulations are continually being revised, resulting in a decrease in car exhaust emissions. The European Commission has revised the RDE test procedure to include exhaust emissions during a cold start as part of package 3. The article carried out simulations using COPERT software, which uses tests based on WLTP, assuming ambient temperatures from -10°C to +20°C, at intervals of 5oC. This paper aims to present the results of mathematically modelling the influence of ambient temperature on the cold start emissions of carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4), nitrogen oxides (NOx), non-methane volatile organic compounds (NMVOC), hydrocarbons (treated as volatile organic compounds - VOC), total particulate matter (TSP) and particle number (PN) in passenger cars and light duty vehicles. The modelling results show that a change in ambient temperature significantly affects carbon dioxide (CO2), nitrous oxide (N2O), methane (CH4), nitrogen oxides (NOx), non-methane volatile organic compounds (NMVOC), hydrocarbons (treated as volatile organic compounds - VOC), total particulate matter (TSP) and particle number (PN) in cold start emissions.

11

To determine the maneuverability of three-link road trains type “B-triple” with steered axles of semi-trailers dollies

Marchuk Roman, Sakhno Volodymyr, Murovanyi Igor, Razboinikov Oleksandr, Bosenko Volodymyr, Marchuk Nazar

Archiwum Motoryzacji

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2024

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Vol. 104, nr 2

97--111

EN

In recent years, the development of container transportation served as a powerful impetus for increasing the length of vehicles, especially road trains, which is due to a number of advantages regarding the transportation of large-sized freight in a container. Today, the whole range of containers is transported by two-link road trains consisting of a tractor vehicle and semi-trailer. The efficiency of such transportation can be increased by means of three-link road trains capable of transporting either three (two 20-foot and one 40- or 45-foot) or four 20-foot containers. This organization of transportation will lead to energy savings and a reduction in environmental pollution due to the reduction of vehicles. However, there is a problem with the maneuverability and stability of such vehicles. The paper developed a kinematic model of three-link road train type “B-triple” with steered axles (front or rear) of semi-trailer dolly with a dual drive control for these axles. Based on folding angles of road train links and drive control transmission ratios of the axles of semi-trailer dolly, the main indicators of road train maneuverability are determined – road train links trajectories displacement relative to the vehicle trajectory and road train overall traffic lane. It was established that when entering a turn with slight differences in folding angles of road train links, the steered axles of semi-trailer dolly turn in the direction opposite to the direction of a turn, thereby reducing the overall traffic lane. During circular motion, the overall traffic lane of road train with steered semi-trailers decreased by almost 2 m, but such road train does not meet the maneuverability requirements. The search for ways to improve the maneuverability of three-link road trains should be sought in the designs of three-link road trains.

12

Modeling of material and energy inputs in the life cycle of a vehicle

Mrozik Małgorzata, Merkisz-Guranowska Agnieszka

Archives of Transport

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2024

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Vol. 70, iss. 2

117--136

EN

The paper focuses on the analysis of the environmental impacts related to the production, operation, decommissioning of vehicles as well as servicing and repairs of cars in real conditions of their use. The authors’ presented mathematical model that was implemented in original numerical program EN-VEHICLE that enables the analysis of energy consumption and emission loads related to material inputs in the entire life cycle of a passenger car. It is a tool from the Life Cycle Assessment category that aims at the effective inclusion of environmental impacts in the decision-making process. The developed program allows for a quantitative interpretation of the calculation results in terms of the environmental safety in each of the phases and throughout the life cycle of the vehicle, taking into account the possibility of supplying the vehicle system with additional material streams derived from recycling and recovery, and introduced both during the construction phase and during the car operation phase. In the presented tool, linear algebra and matrix analysis were used in modeling the vehicle life cycle system. The results of the implementation of the mathematical model were presented in the form of a regression function that allows for approximation of selected empirical data. The regression analysis was used to verify the material characteristics. The tool can be used for a comprehensive comparative assessment of the environmental impact of a passenger car from different production periods. In addition, it can be used to forecast the environmental effects of changes in the material structure determining the production technology and consequently, having a significant impact on the entire life cycle of the vehicle as well as energy and ecological parameters.

13

Aerodynamic and rolling resistances of heavy duty vehicles. Simulation of energy consumption

Grabowski Łukasz, Drozd Arkadiusz, Karabela Mateusz Marcin, Karpiuk Wojciech

Applied Computer Science

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2024

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Vol. 20, no. 3

116--131

EN

The main objective of the work was to develop a comprehensive model of energy consumption simulation of heavy duty vehicles using the VECTO simulation tool. The research issue was the impact of aerodynamic drag and rolling resistance on fuel consumption and emissions under various driving conditions described in four driving cycles: Urban Delivery, Regional Delivery, Urban, and Suburban. Each cycle differed in driving time, distance and average speed to represent different operational scenarios. The methodology involved defining vehicle parameters such as weight, aerodynamic coefficients and tyre rolling resistance. The main findings show that the impact of both aerodynamic drag and rolling resistance on fuel consumption can be efficiently modelled. It has been proven that the proposed modifications to aerodynamic drag and rolling resistance can reduce fuel consumption by more than 8%. The lowest fuel consumption was achieved in the Regional Delivery cycle, while the Urban cycle had the highest fuel consumption due to frequent vehicle stops. The results show that optimization of vehicle design and its performance can significantly improve energy efficiency and reduce emissions. A computational modelling tool such as VECTO can contribute to sustainable transport solutions and improve the efficiency of heavy duty vehicle.

14

Traffic surveillance: vehicle detection and pose estimation based on deep learning

Fadhil Fajer, Abdulghani Mohammed Moath, Salih Anmar, Ghazal Mohammed Tala

Przegląd Elektrotechniczny

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2023

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R. 99, nr 2

131--134

EN

Video-based traffic surveillance analysis is an important area of research with numerous applications in intelligent transportation systems. Due to camera positioning, background crowd, and vehicle orientation fluctuations, urban situations are more complex than highways. This paper provides a state-of-the-art technique for vehicle detection and orientation estimation based on the convolutional neural network CNN for detecting and determining the orientation of a vehicle from a given image to reduce traffic accidents. Different CNN model architectures have been examined to reach this approach's goal, which results in a small and fast model that is compatible with limited-resources hardware. A large-scale dataset of vehicles has been used to train the model. The dataset includes different types and views of cars; the taken images are high quality with diverse backgrounds and light conditions. To train the model, the dataset has been divided into five classes according to view: Front, Rear, Side, Front-side, and Rear-side, to fit the requirement of this work. The system achieves a high accuracy result.

PL

Analiza monitoringu ruchu oparta na wideo jest ważnym obszarem badań z licznymi zastosowaniami w inteligentnych systemach transportowych. Ze względu na ustawienie kamery, tłum w tle i wahania orientacji pojazdu sytuacje w mieście są bardziej złożone niż na autostradach. W artykule przedstawiono najnowocześniejszą technikę wykrywania pojazdów i szacowania orientacji w oparciu o konwolucyjną sieć neuronową CNN do wykrywania i określania orientacji pojazdu na podstawie danego obrazu w celu zmniejszenia liczby wypadków drogowych. Zbadano różne architektury modeli CNN, aby osiągnąć cel tego podejścia, co skutkuje małym i szybkim modelem, który jest kompatybilny ze sprzętem o ograniczonych zasobach. Do trenowania modelu wykorzystano wielkoskalowy zbiór danych pojazdów. Zbiór danych zawiera różne typy i widoki samochodów; wykonane zdjęcia są wysokiej jakości z różnym tłem i warunkami oświetleniowymi. Aby wytrenować model, zestaw danych został podzielony na pięć klas według widoku: przód, tył, bok, przód i tył, aby spełnić wymagania tej pracy. System osiąga wysoką dokładność wyniku.

15

Road freight transport driver fatique test: A pilot study

Poliak Miloš, Beňuš Ján, Hajduk Iwona Ewa, Demirci Ebru, Nica Elvira

Archiwum Motoryzacji

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2023

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Vol. 101, nr 3

67--85

EN

Road freight transport is one of the main modes of transporting goods in the European Union. This reality puts pressure on carriers to make every transport of goods fast, safe, cheap, and efficient. Based on these requirements, lorry drivers are often forced by their employers to break the current social legislation in the European Union and the rules of the road. Compared to the current social legislation in force in different parts of the world, the European Union rules on driving times, breaks and rest periods for drivers engaged in road haulage and passenger transport are the strictest. An important factor and reason of serious and fatal traffic accidents, extensive damage to goods or property in road freight transport is a driver. This article presents three different types of experiments that were carried out, and the results may help to improve the current situation. The main aim of this study was to verify whether the actual regulations are safe and suitable and compare the results of daily work of professional drivers in two different measurements. Last measurement was conducted with using Eye-tacking technology, which aimed to verify impact of experiences on the reaction times of drivers. The authors believe that the results of individual measurements can contribute to increasing safety in road freight transport with preparing future extended studies and proposing the possible changes of current regulation.

16

Development of the Construction of City Buses in Terms of Reducing the Curb Weight of the Vehicle

Caban Jacek, Seńko Jarosław, Nowak Radosław, Rumianek Przemysław, Podkowski Krzysztof, Wolska Natalia

Archiwum Motoryzacji

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2023

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Vol. 102, nr 4

91--104

EN

Modern city buses are made of various construction materials and the share of material groups has changed over the decades. By replacing heavy materials for structural elements or bus components with their lighter counterparts, the kerb weight of the bus can be reduced by up to several hundred kilograms. This article presents the issues of the development of city bus design in terms of passenger space comfort and bus structure in the context of reducing the vehicle's own weight since the 1970s. The main changes in vehicle design allowing for reducing the weight of structural elements of bodies and chassis as well as the main assemblies in city buses are presented as well as research on body types in terms of aerodynamics, safety and travel comfort. It has been shown that reducing the weight of the bus does not negatively affect its load capacity and the new bus designs are equipped with safety and comfort systems, including ABS (Anti-lock Braking System), ASR (Automatic Stability Regulation), ESP (Electronic Stability Program) and air conditioning in the passenger space. Thanks to modern light construction materials, we gain the opportunity to improve safety and comfort without losing the transport capabilities developed as a result of the development of city buses over the years.

17

Analysis of the impact of the technical condition of vehicles on road safety

Gorzelańczyk Piotr, Kliszewski Łukasz, Piątkowski Piotr

Archiwum Motoryzacji

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2023

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Vol. 100, nr 2

62--74

EN

Every year too many people lose their lives and health on Polish roads. At best, it only ends with damage to their cars. The number of accidents is very high. Despite the construction of new, safer roads, the number of collisions continues to rise, and death, every year, is suffered by about three thousand accident participants. On average, forty-one thousand people are injured annually. The main causes of accidents are failure to adjust speed to prevailing conditions or traffic regulations, driving under the influence of alcohol and random events, as well as the technical condition of the vehicles. The purpose of the article is to answer the question of how the technical condition of the vehicles affects traffic safety. For this reason, an assessment of the technical condition of vehicles during a periodic examination at a vehicle inspection station was made. Based on the study, it can be concluded that the largest percentage of defects detected during the examination is in the tire 40% and steering 40%, defects that are particularly important from the point of view of traffic safety, which were demonstrated during the examination.

18

A review of technologies in the area of production, storage and use of hydrogen in the automotive industry

Małek Arkadiusz, Karowiec Robert, Jóźwik Krzysztof

Archiwum Motoryzacji

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2023

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Vol. 102, nr 4

41--67

EN

Presently, we can learn and read more and more about hydrogen in both traditional and social media. The article answers why there is so much interest in hydrogen recently. It has been recognized by European and global decision-makers as a very promising medium necessary to carry out the climate and energy transformation. The advantages of hydrogen as a fuel and as a medium for storing large amounts of energy over a longer period of time is also presented. In addition, an overview of hydrogen technologies presented at the Hydrogen Technology Expo in Bremen in September 2023 is provided. The state of hydrogen technologies currently available on the market is compared to the latest achievements of scientists described in scientific articles. The aim of the article is to review the technologies available on the market for the production, storage and use of hydrogen as a vehicle fuel. Hydrogen technologies presented at the Hydrogen Expo in Bremen were confronted with the latest scientific achievements described in the latest scientific articles. Thanks to such a confrontation, it is possible to make a rational purchasing decision in the area of selected hydrogen technologies.

19

Analysis of the Possibility of Using Neural Networks to Monitor the Technical Efficiency of Diesel Engines During Operation

Tucki Karol, Orynycz Olga, Świć Antoni, Wasiak Andrzej, Mruk Remigiusz, Gola Arkadiusz

Advances in Science and Technology. Research Journal

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2023

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Vol. 17, no. 6

1--15

EN

The aim of the research was to analyse the possibility of using neural networks to determine the parameters of the chemical composition of exhaust gases as a function of engine performance parameters obtained from the on-board diagnostics system such as crankshaft speed and engine load index. The subject of the study was a Fiat Panda car equipped with a 1.3 Multijet diesel engine and powered by pure diesel. The tests used the MAHA MET 6.3 exhaust gas analyser and the on-board diagnostics system OBD II. The obtained values of NOx,O2,CO2 and PM measured behind the DPF were analysed. For the purpose of building a neural network model, preliminary studies were carried out in non-urban traffic (high-speed route). Based on the data obtained, processes of learning neural network structures with approximate properties with backward propagation of errors were carried out. Subsequently, tests were carried out on the operational parameters of the vehicle and the chemical composition of exhaust gases in urban traffic. Analysis of the obtained values of the average parameters obtained during the measurement and obtained on the basis of the prepared neural models allows to determine the relative differences at the level of not more than 10 percent.

20

A proposal for a mobile system of vehicle and rail track diagnostics

Komorski Paweł, Kominowski Julian, Motyl Mateusz

Transport Problems

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2022

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T. 17, z. 2

45--56

EN

The proper technical condition of a vehicle and rail track in operation is a key aspect in terms of safety and travel comfort. This issue is of particular importance for operators and managers of rolling stock and rail infrastructure. Currently, many diagnostic systems have been developed to monitor the technical condition of selected vehicle systems or rail track from the viewpoints of both the vehicle and track. This article proposes the use of vibration signals in selected quantitative and qualitative analyses as the main diagnostic parameter. For this purpose, over a dozen vibration measurements were carried out during the normal operation of a freight wagon as part of a so-called passive experiment. Measurement points were located on the axle boxes of the wheelsets. The proposed research methodology served as a basis for comparative analyses of the selected operational cases that were investigated. The most important conclusion from the study is that it is possible to monitor the technical condition of vehicles and tracks in real time on the basis of measurements of vibration accelerations at the vehicle level. This directly increases the service life of rolling stock and optimises operating costs by changing the maintenance strategy to one that takes into account the idea of modern on-board technical diagnostics. Another important aspect is the possibility of the varied use of the proposed measurement system, depending on the purpose of the research, which is also associated with the diagnostician’s experience in processing vibroacoustic signals and the utilization of simple or complex quantitative and qualitative analyses.