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Wyświetlanie 1-10 z 43
Tytuł:
Analysis of the operation of the hybrid drive system in the light of the proposed Euro 7 standard
Autorzy:
Szramowiat, Mateusz
Szałek, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/2097580.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
hybrid drive system
real driving emissions
Euro 7 standard
vehicle road tests
hybrydowy układ napędowy
rzeczywista emisja cząstek
standard Euro 7
badania drogowe pojazdów
Opis:
The article presents the issues of energy recovery in the hybrid drive system of a vehicle. Road tests of a vehicle equipped with a hybrid powertrain were carried out in accordance with the recommendations of the RDE test. In these studies, measurements of braking energy recovery were carried out in urban, rural and motorway traffic conditions. The analysis of the obtained test results may constitute a premise for the creation of an appropriate strategy for the operation of the hybrid drive system in terms of meeting the requirements of the currently prepared Euro 7 standard.
Źródło:
Combustion Engines; 2021, 60, 4; 65--68
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exploration of the shock-absorber damage influence on the steerability and stability of the car motion
Autorzy:
Parczewski, K.
Powiązania:
https://bibliotekanauki.pl/articles/246042.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
shock absorber
suspension damping coefficient
road tests
vehicle stability
road safety
Opis:
The condition of shock-absorbers is one of factors influencing the in active-safety technology which help drivers to control of their vehicles in the motion. It stuck in the drivers' consciousness, that the damage of the shock-absorber causes the elongation the braking path and the lowering of the drive comfort. The remaining consequences of the worse conditions of shock-absorbers they are not known for the drivers' generality. This impinges on the vehicle motion parameters, its steerability and directional stability. The results of investigations and the analyses of the inefficient shock-absorber influence on vibration damping and the motion of the car were introduced in the presented work. The damping coefficients of the shock-absorber and their change during the exploitation were defined on the basis of test-bed investigations. Road tests were carrying over, on the basis which, try to catch the influence of fault on steerability and the directional stability of the vehicle motion. Road tests were carry over on the A class car. There was compared behaviour of the efficient vehicle and with the worn out shock-absorber. To comparison coefficients various tests are proposed. The road tests were carrying out on A class car with the 4WD driving system, equipped with the drive stability system. Results from individual tests were introduced on graphs.
Źródło:
Journal of KONES; 2011, 18, 3; 331-338
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of curvilinear motion of automobile with the use of two-degree-of-freedom flat model
Autorzy:
Sar, Hubert
Brukalski, Mateusz
Rokicki, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/263525.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
vehicle
safety
traffic accidents reconstruction
road tests
Magic Formula
Opis:
Development of active safety systems of automobiles is nowadays based not only on road tests, but also on computer simulation of vehicle's curvilinear motion. To properly perform simulation, all required model parameters have to be properly estimated. The less complicated model is, the less parameters it requires. So that, it makes no sense to apply too complicated models, if we are not able to estimate parameters with relatively low error. One of the most popular is two- degree-of-freedom flat model to describe curvilinear motion of automobile. It is widely used in design and improvement of active safety systems. The article discusses the application of simple two- degree-of-freedom flat model of automobile, which requires only several parameters. These parameters are: mass of a vehicle, location of center of gravity of a vehicle, yaw mass moment of inertia of a vehicle, side-slip characteristics. Furthermore, to be able to compare simulation and measurement results, it is necessary to know some input signals such as steering wheel angle and velocity of a vehicle, recorded during road tests. In this article signal of steering wheel angle was taken from Controller Area Network (CAN) bus. In case of model of a vehicle, the Authors decided to compare the results of simulation using two different side slip characteristics known as the dependence between lateral reaction force and side slip angle: linear characteristic (constant cornering stiffness) and the characteristic represented by Pacejka’s Magic Formula in steady-state version.
Źródło:
Archiwum Motoryzacji; 2020, 87, 1; 19-32
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innovative universal vehicle for experimental tests on roll-over stability of off-road wheeled machines and vehicles
Autorzy:
Dudziński, P.
Sierzputowski, G.
Powiązania:
https://bibliotekanauki.pl/articles/246582.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
off-road machine
off-road vehicle
roll-over stability
innovative universal wheeled test vehicle
Opis:
The current standards in roll-over stability of off-road wheeled machines and vehicles do not include many significant factors of their design and performance (e.g. suspension type and parameters, stiffness of tires) as well as operation conditions (e.g. inclination and bearing capacity of the ground). In practice, it results in many dangerous roll-over accidents, particularly of articulated body steer vehicles, which might involve the operator’s death and/or severe damage to the machine and its surroundings. In recent years, some solutions developed and applied by particular companies aimed at roll-over stability improvement have been noticed. Unfortunately, their use appears to be not optimal and the aggregated knowledge remains usually a know-how of the company. For comprehensive explanation of this problem the Division of Off-Road Machine and Vehicle Engineering has built the innovative universal test vehicle for experimental tests on roll-over stability of off-road wheeled machines and vehicles. This unique at global level, universal test vehicle enables the undercarriage structure and properties to be optionally selected and roll-over stability to be tested on special rotary-tilting platform with on-line measurement of three components of reaction forces under each wheel. The paper presents the parameters and research potential of the original universal tests vehicle with the exemplary tests results.
Źródło:
Journal of KONES; 2016, 23, 4; 93-98
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Representativeness of emissions of toxic substances in bench tests reflecting the road traffic conditions of a vehicle
Autorzy:
Wiśniowski, Piotr
Gis, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/133793.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
driving cycle
road tests
emission of toxic substances
chassis dynamometer
synthesis of road tests
cykl jezdny
badania drogowe
emisja substancji toksycznych
hamownia podwoziowa
synteza testów jezdnych
Opis:
The results of measurements of exhaust emissions in real road traffic differ significantly from the results of stationary homologation tests. One of the solutions, helpful in determining the actual emission, is the creation of stationary exhaust emission tests simulating the use of the vehicle on the road. The article presents the method of reconstructing the synthetic driving test obtained on the basis of road tests and presents the obtained profile of the speed course. The authors discussed the reasonableness of selecting the emission component determining the correctness of the representativity of the stationary test obtained, which determines the amount of work done by the engine.
Źródło:
Combustion Engines; 2019, 58, 2; 88-90
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania drogowe i symulacyjne przedłużonego zestawu pojazdów ciągnik siodłowy-naczepa
Road and virtual tests of elongated vehicle combination tractor and semi-trailer
Autorzy:
Cholewiński, S.
Łączyński, J.
Olejnik, K.
Powiązania:
https://bibliotekanauki.pl/articles/315397.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
badania drogowe
badania symulacyjne
przedłużone naczepy
road tests
simulation tests
extended semi-trailers
Opis:
W artykule przedstawiono przebieg badań naczepy wydłużonej o 1,3 m w Polskich warunkach eksploatacyjnych i uzyskanie wiarygodnego materiału porównawczo-badawczego, mogącego stanowić podstawę do decyzji o ewentualnym wprowadzeniu tego typu przedłużonych naczep do normalnej eksploatacji. Badania te zostały przeprowadzone symulacyjnie i eksploatacyjnie w celu porównania wyników.
This paper presents the testing process of the extended semi-trailer by 1.3 m in the Polish operating conditions and obtaining a reliable material for comparison and research, which could provide a basis for decisions on the possible introduction of this type of extended semi-trailers into normal operation. These tests have been carried out by simulation and operationally in order to compare the results.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 12; 876-880
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kształtowanie charakterystyk powstrzymywania pojazdów przez bariery drogowe spełniające kryteria badań zderzeniowych
Shaping the characteristics of the vehicle restraint by road barriers fulfill the criteria of the impact tests
Autorzy:
Fligiel, M.
Powiązania:
https://bibliotekanauki.pl/articles/311285.pdf
Data publikacji:
2017
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
badania zderzeniowe
energia uderzenia
bariera drogowa
system ograniczający drogę
ASI
THIV
PHD
crash tests
impact energy
road barriers
road restraint system
characteristics of vehicle restraint
Opis:
W pracy rozpatruje się jeden z czynników fizycznych (przyspieszenie, opóźnienie) wpływających w znacznym stopniu na utratę zdrowia pasażerów pojazdów samochodowych. Przedstawiono metodę obniżenia poziomu przyspieszeń, poprzez zastosowanie w barierach o małej podatności układu sprężystego akumulującego energię uderzenia pojazdu, a tym samym obniżenia przyspieszenia (opóźnienia). W przedstawionej metodzie uwzględnia się zalecenia dotyczące poziomu powstrzymywania barier spełniających kryteria badań zderzeniowych.
The subject of the publication concerns the analysis of stages of vehicle body deformation in frontal collision for the characteristics of delay, speed and deformation of the vehicle. The course of the collision was divided into stages, whose boundaries are determined by the characteristic intervals.. In the work one of the physical factors (acceleration or delay), which influence significantly on the loss of the health of passengers vehicles, is considered. A method of reducing the level of acceleration is presented. In the barriers with low system compliance is used an accumulating elastic energy system of the vehicle impact and thereby reduced acceleration (delay). In the presented method, the recommendations on the containment level barriers to meet the criteria of the impact tests are taken into account.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 7-8; 175-180
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On board diagnostics (OBD) research in conditions of chassis dynamometer and road tests
Autorzy:
Jankowski, A.
Slezak, M.
Powiązania:
https://bibliotekanauki.pl/articles/245817.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
vehicle
chassis dynamometer
road researches
OBD
exhaust emissions
Opis:
Subject matter ofthe paper is test results on the chassis dynamometer and road test results in reference to the on-board (OBD) system diagnostics of car vehicles. Test results of vehicles on the chassis dynamometer in temperatures of +22°C and two sub-zero -7°C and -12°C, and also test results of road in reference to chosen car vehicles are presented in the paper. The in effective work ofthe system in temperatures below -7°C was observed. Test results on the chassis dynamometer with test results of road ones are compared. The time 10.9 as the measure of the efficiency of the work of the OBD system is proposed. One gave the proposal of certification of approval research in reference to OBD systems. The paper presents in particular: road emissions of a car during the NEDC (UDC + EUDC) European drive cycle, road emissions of a car during the NEDC (UDC + EUDC) European drive cycle in low temperature chamber (-7°C) in comparison to emissions in temperature -12°C, road emissions ofa car during the European drive cycle in comparison to emissions at oxygen sensor disconnected before catalytic reactor, vehicle speed recorded in road traffic, comparison idea of road cycle piece with pattern cycle similar from point of view speed course, covering coefficients of recorded time for drive cycles, relations between parameters influencing on OBD system reaction time for defect appearing.
Źródło:
Journal of KONES; 2011, 18, 4; 141-149
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Child safety in a car during a frontal collision
Autorzy:
Żuchowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/241889.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
road transport
vehicle safety
crash tests
child safety
booster seat
Opis:
Road accidents with participation of the children are of particular nature. According to surveys, the older children at the age of 8-12 years are often transported in cars in a wrong way. They are usually fastened with seat belts designed for adult passengers. In order to make the seat belts safe for a child, they should be used together with a booster cushion or a high back booster seat. This paper presents the test results and analysis of dynamic loads affecting a child in the back seat of a passenger car during a frontal collision. The car body was accelerated to a speed of about 48 km/h and then it was suddenly stopped in a time of about 100 ms. The analysis was carried out on the basis of results of experimental tests performed at the collision station in the Automotive Industry Institute in Warsaw. The attention was paid to the influence of protection device type on the P10 dummy, representing a child at the age of about 10 years. Three child protection options during a collision were considered: the dummy was sitting directly in a car seat, on a booster cushion and on a seat. The dummy was fastened with standard seat belts. Evaluation of the protection device influence on the dummy loads was given in association with the operation of the seat belts. During evaluation, the indexes of biomechanical resistance of a human body to the impact load effects were used. They made the basis for the evaluation of the child injury severity risk.
Źródło:
Journal of KONES; 2013, 20, 1; 395-402
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approval tests and evaluation of emission properties of vehicle
Autorzy:
Majerczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/246994.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport
road transport
combustion engines
air pollution
environmental protection
Opis:
Operation of vehicles equipped with combustion engines is a source of pollution. That is why the emissions from this source are restricted. The emissions reduction system consists of several steps, whose basic component is a typeapproval of vehicle in terms of emissions level and admission to the registration of vehicles that meets the requirements for emissions. It is assumed, that the gradual reduction of emissions limits will improve the emission properties of the vehicles, and gradual withdrawal of used vehicles, will reduce of emissions growth. The basis for issuing opinions on a vehicle's exhaust emissions is the measurement of emissions performed in the laboratory on a chassis dynamometer in reproducible conditions of preparing the vehicle for testing, test replication, fuel for the engine, and the procedure for collecting the exhaust gas analysis. Motor Transport Institute conducts the type approval tests, as well as the research on emissions from vehicles in the real traffic conditions, which are used to determine the actual emission from the vehicle population. Emission tests for applications, that go beyond the application of type approval show, that there are vehicles whose emissions in operation is substantially different from the emissions measured during type approval. It is a natural phenomenon in the case of used vehicles and vehicles with engine malfunctions or exhaust aftertreatment system defect. However, there are vehicles whose emissions under specific operating traffic conditions are significantly different from the values obtained in the course of type approval tests, despite the good properties of emission measured under the conditions provided by the type-approval procedure. The article discusses the results of the emissions from vehicles, obtained in the tests used to determine the emission factors for vehicles used in real traffic conditions, thus taking into account emissions from vehicles, made under different conditions than the type approval tests, which show that, in terms of driving cycles, which are not covered by the emission test procedure, can multiply and exceed the approved values.. This is particularly true for modern diesel engines.
Źródło:
Journal of KONES; 2013, 20, 4; 245-251
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 43

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