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Tytuł:
Proces hamowania sportowych motocykli wyposażonych w dwuobwodowy system hamulcowy
Braking process of sports motorcycles equipped with a dual circuit braking system
Autorzy:
Tadej, M.
Czech, P.
Hornik, A.
Gustof, P.
Jędrusik, D.
Powiązania:
https://bibliotekanauki.pl/articles/314150.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
dwuobwodowy system hamulcowy
układ hamulcowy
system ABS
hamowanie
sportowe motocykle
dual circuit braking system
braking system
ABS
braking
sport bikes
Opis:
Współczesne układy hamulcowe w motocyklach sportowych są konstrukcjami dwuobwodowymi co oznacza, że możemy dowolnie regulować siłę hamowania koła przedniego oraz tylnego. W motocyklach sportowych nie stosuje się rozwiązań typu kombi. W obecnym czasie mamy do czynienia ze stosowaniem coraz większej liczby systemów elektronicznych wspomagania układu jezdnego motocykli. Wyposażanie motocykli w elektroniczny system ABS staje się standardem w ruchu ulicznym. Prawidłowa ocena sytuacji na drodze przez kierującego może niekiedy nie wystarczyć i występuje potrzeba hamowania awaryjnego. Odpowiednie umiejętności kierowcy oraz niezbędna wiedza pozwalają na uniknięcie niebezpiecznych sytuacji. Celem artykułu jest analiza opóźnienia hamowania występującego w trakcie procesu hamowania sportowych motocykli.
Modern brake systems in sports motorcycles are dual circuit structures, which means that can freely adjust the braking force of the front wheel and the rear. In sports motorcycles are not used combi type solutions. At the present time we are dealing with the use of an increasing number of electronic systems supporting running gear of motorcycles. Equipping motorcycles with electronic ABS system is becoming the standard in road traffic. Proper assessment of the situation on the road by the driver may sometimes not be enough, and there is a need for emergency braking. Suitable driving skills and essential knowledge, allow avoiding dangerous situations. The aim of the article is to analyse the braking deceleration occurring during the braking process of sports motorcycles.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 12; 454-461
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of automotive vehicle braking system failure on driving safety
Autorzy:
Kowalski, M.
Powiązania:
https://bibliotekanauki.pl/articles/244871.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
car diagnostics
braking system
driving safety
Opis:
The paper describes systems responsible for driving safety of vehicles weighing up to 3.5 t. It is focused on selected failures (fouling) of braking systems that are typical during motor cars operation. Simulation testing regarding effect of selected failures (fouling) of braking system elements on braking force and braking efficiency were performed. In order to perform such testing, author of the paper worked out the methodology of testing which is also described here. The test results (partial) are displayed as tables and charts. The negative effect of selected failures on braking force and braking efficiency index is influencing directly on motor cars driving safety. It is also emphasized that it is important to maintain and observe automotive manufacturers’ technical requirements regarding braking system elements such as tyre pressure, tyre tread condition, brake shoes wear, etc. Basing on the test results it is found that excessive wear of tyres and brake shoes wear could be the reason of significant WSH index decrease resulting in faulty car. This can be visible through lower than allowable level of braking efficiency index WSH, which is the basic legal diagnostic parameter of break system condition assessment. Replacing such elements significantly improves braking efficiency index WSH.
Źródło:
Journal of KONES; 2013, 20, 1; 147-153
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A flywheel-based regenerative braking system for railway vehicles
Autorzy:
Jackiewicz, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/2204653.pdf
Data publikacji:
2023
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
railway brakes
flywheel
regenerative braking system
Opis:
Regenerative braking is a technique that employs electric motors to convert the dynamic mechanical energy from the motor’s spinning rotor and any attached loads into electricity. However, such a type of regenerative braking can only slow but not stop the vehicle because there is too little energy to excite the motor acting as a generator at low speeds. Therefore, this paper presents a unique flywheel-based regenerative braking system for railway vehicles. This system is supposed to meet high safety and comfort expectations in all operating conditions. The braking action control of this system should allow braking of empty or loaded vehicles according to load, the anti-blockage braking action of wheels and prevent wheel-slide during braking or wheel slip during acceleration. The new regenerative braking system under development, like any kinetic energy recovery system, requires the application of continuously variable transmission. The essence of the new solution is to design and build this type of variable transmission using only one planetary gear controlled through the powertrain control module for an electric motor cooperating concurrently. This paper describes complete modelling and simulation realisation on a closed-loop servomotor drive, which cooperates with the variable transmission of the regenerative braking system based on the Scilab/Xcos environment.
Źródło:
Acta Mechanica et Automatica; 2023, 17, 1; 52--59
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Blending control of the trolleybus traction and brake drives to enhance the braking efficiency of a vehicle
Autorzy:
Safonau, Andrei
Vovk, Yuriy
Lyashuk, Oleg
Khudobei, Roman
Powiązania:
https://bibliotekanauki.pl/articles/2141106.pdf
Data publikacji:
2020
Wydawca:
Fundacja Centrum Badań Socjologicznych
Tematy:
trolleybus
anti-lock braking system
traction control
Opis:
Widespread usage of emission free public transport is the preferred strategy in many cities to reduce a congestion and pollution from the road traffic. The trolleybus is a kind of urban public transport, i.e. a fully electric vehicle, which is considered as a promising tool to enhance the efficiency of public transport and to attain the goals of sustainable development and quality of city life. The operation control of service brake system and secondary brake system (the braking torque of traction electric motor) is realized with help of one pedal in the trolleybus. Thus, there are modes of the joint operation for these systems during the braking process. Authors focus on the development of rule-based algorithm for the blending control of traction electric motor and anti-lock braking system to enhance the overall braking efficiency of a vehicle. The mathematical model of the trolleybus braking dynamics was developed for this purpose. Test bench and ride tests on different road surfaces were carried out to determine the parameters of vehicle braking efficiency and to validate the developed mathematical model. The corresponding experimental data were used to analyse the efficiency of proposed rule-based strategy for the blending control of traction electric motor and anti-lock braking system of the trolleybus. As a result, the availability of proposed control algorithm is confirmed, which secures the required braking efficiency and provides a high braking stability of the vehicle.
Źródło:
Journal of Sustainable Development of Transport and Logistics; 2020, 5, 2; 49-61
2520-2979
Pojawia się w:
Journal of Sustainable Development of Transport and Logistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical thermal analysis of a car braking system
Autorzy:
Różyło, P.
Powiązania:
https://bibliotekanauki.pl/articles/102377.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
Abaqus
braking system
numerical analysis
temperature distribution
Opis:
The study involved performing a numerical thermal analysis of selected components in a car braking system. The primary goal of the study was to determine the regions which are most susceptible to variations in temperature, and to determine the degree of thermal impact upon them. The analysis was performed using the Abaqus environment. The examined components of the braking system were made of materials reflecting mechanical properties of the real subassemblies. The FEM analysis enabled determination of the distribution of temperature in the system with respect to the properties of the investigated materials and applied boundary conditions.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 2; 38-43
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania opóźnienia hamowania motocykli
Research deceleration of brake motorcycles
Autorzy:
Idzior, M.
Korzik, M.
Powiązania:
https://bibliotekanauki.pl/articles/317151.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
układ hamulcowy
hamowanie
sportowe motocykle
braking system
braking
sport bikes
Opis:
W artykule pracy przedstawiono wyniki badań układów hamulcowych w pojazdach jednośladowych w celu wyznaczenia wartości liczbowych opóźnienia hamowania na suchym asfalcie, powszechnie wykorzystywane dla potrzeb rekonstrukcji wypadków drogowych.
The paper presents results of research braking systems in vehicles wheelers to determine the value of deceleration of brake dry asphalt, commonly used for accident reconstruction.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 12; 185-188
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation evaluation of the influence of selected geometric parameters on the operation of the pneumatic braking system of a trailer with a differential valve
Autorzy:
Szpica, Dariusz
Kisiel, Marcin
Czaban, Jarosław
Powiązania:
https://bibliotekanauki.pl/articles/2105991.pdf
Data publikacji:
2022
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
mechanical engineering
air braking system
differential valve
simulation
Opis:
This article presents simulation models of trailer air brake systems in configurations without a valve and with a differential valve, thus demonstrating the rationale for using a valve to improve system performance. Simplified mathematical models using the lumped method for systems without and with a differential valve are presented. The proposed valve can have two states of operation depending on the configuration of relevant parameters. These parameters can include the length of the control pipe, the throughput between chambers in the control part of the valve and the forcing rise time. Based on the calculations, it was found that the differential valve with large control pipe lengths can reduce the response time of the actuator by 42.77% relative to the system without the valve. In the case of transition of the valve to the tracking action, this time increases only by 9.93%. A force rise time of 0.5 s causes the transition of the valve from the accelerating action to the tracking action, with 9.23% delay relative to the system without a valve. The calculations can be used in the preliminary assessment of the speed of operation of pneumatic braking systems and in the formulation of guidelines for the construction of a prototypical differential valve. In conclusion, it is suggested to use a mechatronic system enabling smooth adjustment of the flow rate between chambers of the control system of the differential valve.
Źródło:
Acta Mechanica et Automatica; 2022, 16, 3; 233--241
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The research on ageing of glycol-based brake fluids of vehicles in operation
Autorzy:
Caban, J.
Droździel, P.
Vrábel, J.
Šarkan, B.
Marczuk, A.
Krzywonos, L.
Rybicka, I.
Powiązania:
https://bibliotekanauki.pl/articles/957941.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
braking system
fluids ageing
operational
road safety
wear
Opis:
The road safety depends on many factors, including the efficiency of the technical system and the disposal of the driver of the vehicle. As wear of most of the vehicle assemblies threatened only with a breakdown, excessive wear of the braking system components may pose a risk of a traffic accident. The article presents a study on the quality of the brake fluid conductivity as a function of temperature and water content conducted for a selected group of vehicles. This group of vehicles was characterized by different production date and had a different of vehicle mileage. We presented the methodology of statistical analysis of the quality of brake fluid tests in selected 38 passenger vehicles in operation.
Źródło:
Advances in Science and Technology. Research Journal; 2016, 10, 32; 9-16
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculation of the optimal braking force distribution in three-axle trailers with tandem suspension
Autorzy:
Kamiński, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/2105986.pdf
Data publikacji:
2022
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
agriculture trailer
tandem axles
air braking system
braking force distribution
optimization
Opis:
Heavy agricultural trailers can be equipped with a three-axle chassis with a tandem axle set at the rear and one mounted on a turntable at the front. In such trailers, selection of the distribution of braking forces that meet the requirements of the EU Directive 2015/68, with regard to braking, largely depends on the type of tandem suspension used. The requirements for brake force distribution in agricultural trailers of categories R3 and R4 are described. On this basis, a methodology for calculating the optimal linear distribution of braking forces, characteristic of agricultural trailers with air braking systems, was developed. An analysis of the forces acting on a 24-tonne three-axle trailer during braking was performed for five different suspensions of the rear tandem axle. An optimization algo-rithm using the quasi Monte Carlo method was described, on the basis of which a computer program for selection of the linear distribution of braking forces was developed. The calculations were made for an empty and loaded trailer with and without the weight of the tandem suspension. The most uniform distribution of braking forces was obtained for two leaf spring with dynamic equalization and air suspension, in which the ratio of the braking force of the tandem axle and the total braking force varied between 22.9% and 25.5% for the different calculation variants. A large variation in the braking force distribution was achieved for the two leaf spring suspension, in which the ratio of tandem axle braking force and the total braking force ranged from 2.7% to 6.4% for the leading axle and from 27.8% to 36.2% for the trailing axle. The presented calculation methodology can be used in the initial phase of the design of air braking systems for three-axle agricultural trailers.
Źródło:
Acta Mechanica et Automatica; 2022, 16, 3; 189--199
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Method of calculating the design parameters of a modulator anti-lock braking system with a high flow of working fluid
Autorzy:
Zhilevich, Mikhail
Ermilov, Sergey
Kapski, Denis
Vovk, Yuriy
Lyashuk, Oleg
Vovk, Iryna
Powiązania:
https://bibliotekanauki.pl/articles/2116416.pdf
Data publikacji:
2021
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
anti-lock braking system
hydraulic braking system
modulator
method of calculating
dump truck
układ przeciwblokujący
hydrauliczny układ hamulcowy
metoda obliczania
wywrotka
Opis:
The design dimensions of the executive hydraulic cylinders of the brake system of heavy-duty mining dump trucks cause high fluid flow during the braking process. Therefore, dimensions of the anti-blocking system modulator spool pair require unique electromagnets or hydraulic amplifiers to control. These solutions do not allow the required modulator performance. Thus, a modulator scheme with a division of the flow of fluid from the source to the brake cylinders was developed. This scheme allows during emergency braking passing, an additional amount of fluid to cylinders through the valve, installed parallel to the main valve upon pressure increase phase and controlled by the pressure difference. The task is to develop a method for calculating the main structural dimensions of a modulator. The calculation of the valve of the second cascade, installed in parallel to the main stage, is carried out for the emergency braking mode with the maximum flow rate to ensure the required performance of the braking system. The balance of fluid flows equations is compiled at the key points. The flow rate of the fluid through each of the valves is determined by the Torricelli formula, and the pressure difference across the valves is assuned equal. The obtained relations allows building a family of Q-p curves, which can be used to select the diameter and stroke of the additional valve depending on the flow rate in the brake system.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2021, 110; 199--210
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regenerative braking as a way to recover lost energy in hybrid vehicles
Autorzy:
Soliński, Michał
Powiązania:
https://bibliotekanauki.pl/articles/93110.pdf
Data publikacji:
2020
Wydawca:
Państwowa Wyższa Szkoła Zawodowa w Tarnowie
Tematy:
braking system
regenerative braking
hybrid vehicle
układ hamulcowy
hamowanie regeneracyjne
pojazd hybrydowy
Opis:
The very rapid development of the automotive industry forces designers to implement new solutions. One of them is the construction of braking systems, which can enable the recovery of part of the energy lost during the braking process in hybrid vehicles. The article presents the basic types of hybrid drives currently used in motor vehicles. The principle of operation of the mechanical and electrical energy recovery system had been discussed, and the vehicles in which such solutions had been applied were indicated.
Źródło:
Science, Technology and Innovation; 2020, 8, 1; 21-25
2544-9125
Pojawia się w:
Science, Technology and Innovation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods for improving the dynamic properties of the air braking systems of low-speed agricultural trailers
Autorzy:
Kulikowski, Krzysztof
Kamiński, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/263407.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
air braking systems dynamic
agricultural trailer
braking system optimization
air brake valve
Opis:
Too low an operating speed of trailer air braking systems may lead to an inhibition of the braking asynchrony of agricultural tractor trailer units. Improved braking dynamics advanced braking systems with an electronic control unit (e.g. Trailer EBS) provide a more rational solution for high speed agricultural vehicles. In this paper, an overview of other methods for developing the dynamic properties of air braking systems for agricultural trailers is described. This paper provides an examples of braking system design parameters optimization, using a variety of accelerating valves and dynamic properties correcting devises, also as well, by using simple systems with an electronic controllers. The described methods of dynamic properties improvements can be used to improve the speed and operation synchrony of the air braking systems of low-speed agricultural trailers. The paper presents the influence of some of the described methods, with different levels of complexity, on the properties of typical air braking systems.
Źródło:
Archiwum Motoryzacji; 2019, 84, 2; 5-22
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nonlinear method of determining the vehicle pre-crash speed based on B-spline with propabilistic weights - subcompact car class
Autorzy:
Kubiak, Przemyslaw
Sys, Ewa
Goslawski, Lukasz
Manko, Maria
Gralewski, Jacek
Krukowski, Mateusz
De Sousa, Ricardo Alves
Mrowicki, Adam
Soghabatyan, Tigran
Zou, Tiefang
Powiązania:
https://bibliotekanauki.pl/articles/263553.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
air braking systems dynamic
agricultural trailer
braking system optimization
air brake valve
Opis:
A new non-linear method utilizing the work W of car deformation is considered in this study. The car deformation is defined as an algebraic function of deformation ratio Cs. The method of variable correlation is exploited in order to develop experimental data. To determinate mathematical model parameters, data from the NHTSA database including frontal crash tests are used. Such database is comprised of substantial number of crash cases and main focus was put on frontal impacts. In the non-linear method used so far, the so-called energetic approach, collisions are considered non-elastic. The speed threshold defining the elastic collision was set to be 11 km/h. This simplistic approach is used to determine the linear relation of energy loss during deformation on deformation coefficient Cs. Deformation points C1-C6 are taken into account while calculating a mean value that defines this coefficient. A more accurate non-linear method as well as more complex form of deformation coefficient is suggested to determine the work of deformation in this paper. The focus of those methods is to establish the value of nonlinear coefficient b_k which is the slope factor of precrash velocity Vt and deformation ratio Cs function.
Źródło:
Archiwum Motoryzacji; 2019, 85, 3; 5-18
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ocena bicia tarcz hamulcowych wybranymi rozkładami statystycznymi
Evaluation of runout of the brake disc of the selected statistical distributions
Autorzy:
Sawczuk, W.
Chomiakowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/314362.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
tarcze hamulcowe
układ hamulcowy
proces hamowania
brake discs
braking system
braking process
Opis:
W artykule omówiono jeden z wybranych aspektów eksploatacyjnych tarczowego układu hamulcowego. W przypadku długotrwałych hamowań na spadku lub częstych przyhamowań z dużych prędkości dochodzi do granicznego obciążenia cieplnego elementów pary ciernej w szczególności tarcz hamulcowych. Zjawisko to w przypadku szybkiego schłodzenia może spowodować odkształcenie tarczy hamulcowej, co skutkuje jej biciem i spadkiem efektywności procesu hamowania. Celem artykułu jest próba opisania przypadków bicia tarcz hamulcowych określonej populacji pojazdów wybranymi rozkładami statystycznymi.
The article presents selected aspects of the operation of the disk brake. In the case of prolonged braking on the downhill or frequent braking from high speed is lower thermal load of friction pair elements, in particular brake discs. The phenomenon that in the case of rapid cooling may cause deformation of the brake disc, which leads to her beating and the fall of the efficiency of the braking process. The aim of the article is the attempt to describe cases of runout of the brake discs of the selected population of vehicles, the distribution statistically.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 6; 1107-1110
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Obliczenia dynamiczne pneumatycznego zaworu przekaźnikowego
Dynamic calculations of pneumatic relay valve
Autorzy:
Kamiński, Z.
Powiązania:
https://bibliotekanauki.pl/articles/387407.pdf
Data publikacji:
2009
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
dynamika
układ hamulcowy
pneumatyczne układy hamulcowe
pneumatic braking valves
dynamic
braking system
Opis:
W pracy przedstawiono równania dynamiki zaworu przekaźnikowego stosowanego w pneumatycznych układach hamulcowych pojazdów. Opracowany model matematyczny zaworu wykorzystano do symulacji w programie Matlab- Simulink procesów przejściowych w dwuobwodowym układzie napędowym z siłownikiem tłokowym jednostronnego działania. Przedstawiona metoda obliczeń dynamicznych może być wykorzystana do doboru parametrów konstrukcyjnych elementów instalacji ze względów na stawiane wymagania, w tym szybkość działania pneumatycznego układu hamulcowego.
The article deals with some dynamic equations of relay valve used in vehicles pneumatic brake systems. The relay mathematical model was used to simulate transition processes in a pneumatic two-circuit drive with one-acting cylinder in Matlab-Simulink. The introduce method of dynamic counts of the system may be used to select design parameters of elements with regards to the requirements and operation speed of pneumatic brake system.
Źródło:
Acta Mechanica et Automatica; 2009, 3, 1; 62-64
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 72

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