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Wyświetlanie 1-15 z 82
Tytuł:
Tire and Engine Sources Contribution to Vehicle Interior Noise and Vibration Exposure Levels
Autorzy:
Abouel-Seoud, Shawki
Powiązania:
https://bibliotekanauki.pl/articles/178006.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
vibro-acoustic
interior vibration
interior noise
tire-road interaction
vehicle engine
Opis:
The main objective of the research presented in this paper is to enhance driver-passengers Comfort of a vehicle that in turn leads to better vehicle safety and stability. The focus was put on studying the interior vibration and noise contributions originated from tire-road and engine-transmission subsystems, due to their significant impact on the dynamic performance of the vehicle. The noise and vibration measurements were recorded at the driver’s head position and on the driver legs room. Furthermore, the influence of different tire types and road surface textures on the vehicle interior noise and vibration were considered. The results indicate that the widely used conventional engine mounts and tires in commercial vehicles cannot fulfill the conflicting requirements for the best isolation concerning both road surface and engine-transmission induced excitations. The values of driver’s head position sound pressure level and floor vibration acceleration broadband averages originate for engine-transmission are lower than that for tire-road interaction. Furthermore, the values of RMS, crest factor, kurtosis and IRI for the vehicle waveform were estimated for vehicle speeds, tire types and road surface textures. Moreover, the percentage contribution for both interior noise and vibration originated from tire-road interaction is higher than the one from vehicle engine-transmission system in all the vehicle speed range, tire type and road surface texture considered.
Źródło:
Archives of Acoustics; 2019, 44, 2; 201-214
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of piston surface treatment on piston assembly friction in an eco-mileage vehicle engine
Autorzy:
Nakashima, Kohei
Uchiyama, Yosuke
Powiązania:
https://bibliotekanauki.pl/articles/2097601.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
eco-mileage vehicle engine
floating cylinder liner
fine particle bombarding
piston
piston assembly friction
tłok
tarcie układu korbowego
Opis:
This study investigated the effect on piston assembly friction after treating piston surfaces with a fine particle bombarding process, using a friction measurement apparatus with a floating cylinder liner, similar to an eco-mileage vehicle engine. Friction was measured in four conditions: (1) no treatment (standard piston in a commercially-available engine), (2) micro dimple treatment (45 μm ceramic particles were air-blasted onto the piston surface), (3) molybdenum disulfide (MoS2) shot treatment (1 μm MoS2 particles were air-blasted onto the piston surface), and (4) combination of the previous two micro dimple and MoS2 shot treatments (first 45 μm ceramic particles and then 1 μm MoS2 were air-blasted onto the piston surface). Results indicated that friction decreased in the following order: no treatment > micro dimple treatment > MoS2 shot treatment > combination of micro dimple and MoS2 shot treatments.
Źródło:
Combustion Engines; 2022, 61, 1; 18--23
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental development of apparatus to measure piston assembly friction in an eco-mileage vehicle engine
Autorzy:
Nakashima, Kohei
Uchiyama, Yosuke
Powiązania:
https://bibliotekanauki.pl/articles/133190.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
eco-mileage vehicle engine
floating cylinder liner
piston assembly friction
piston ring
piston skirt
tarcie układu korbowego
pierścień tłokowy
płaszcz tłoka
Opis:
Apparatus was developed to measure piston assembly friction with a floating cylinder liner against crank angle, using components of an eco-mileage vehicle engine as much as possible. This apparatus was then used to investigate the effect of different sets of piston rings on piston assembly friction in an eco-mileage vehicle engine. Results indicated that, compared to the piston with all three rings (a top ring, a second ring and an oil ring), the piston with two rings (a top ring and an oil ring) reduced piston assembly friction at all engine temperatures and engine speeds. Another configuration of two rings, with the top ring and the second ring, but without the oil ring, reduced friction at a lower engine temperature and speed, but was almost the same as the three-ring set at a higher engine temperature and speed. Finally, a one-ring set, with only the top ring, further reduced friction, except at a higher temperature and speed, where friction was greater than the two-ring set without the second ring.
Źródło:
Combustion Engines; 2019, 58, 2; 55-59
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some aspect of theory of cumulated fuel consumption
Autorzy:
Sitnik, L. J.
Powiązania:
https://bibliotekanauki.pl/articles/247685.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
vehicle
engine
fuel consumption
Opis:
A theory of cumulated fuel consumption in process ofvehicle operation is described. The method of creation the mathematical model and procedure of determination of model variables is shown. The mainfeatures of cumulated fuel consumption are painted attention. li is shown that the theory of cumulated fuel consumption can be use to description of the fuel consumption from beginning the exploitation of vehicles and also for the situation when the vehicle are in exploitation from any time and further fuel consumption are unknown. An example of utilisation of elaborated theory for assessment of operation of passenger car is also presented. It has been shown that applying the theory of cumulated fuel consumption, the course of such consumption can be accurately described also in this case. This proposal can be formulated in spite of making some simplifications. This is because the unknown value of the accumulated fuel before start the time of observation operation will be determined using the average (from the average) fuel consumption. This simplification greatly facilitates the flow of the calculations and it seems does not offend errors in the calculations. Method of determining the average is discussed in the article. It appears that such treatment may be justified by the fact that the mistake is, in principle, systematic error. Very high coefficients of mathematical model to fit the measured data are very interesting. Such regularity was observed during researches in buses transport [l], intercity buses, and the fleets of various vehicles (the results of researches are not yet published).The introduction of the theory of cumulated fuel consumption as one of the important parameters to assess the operation of the vehicle or vehicles may also be useful in exploitation researches. At present times the researches in which the vehicles are already in service and the engine control mops are tuned (chip tuning), are made. A good performance of these changes is often observed on chassis dyno but that is not properly sanctioned in natural exploitation. Experimentation with such issue is underway and will be the subject of future analysis (and publications).
Źródło:
Journal of KONES; 2010, 17, 4; 447-453
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Compressed natural gas engines. A review
Autorzy:
Kowalewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/242089.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
CNG vehicle
NGSI engine
NGCI engine
CNG dual-fuel engine
ecology
Opis:
Resources, production, refuelling stations and physic-chemical properties of natural gas are presented. Technical problems connected with application of natural gas to SI and CI engines are shown and analyzed. Presently most of gas vehicles are converted from gasoline to natural gas application but also many companies produce gas vehicles driven with Sl engines originally fabricated as gas vehicles. However natural gas spark ignition engines have lower torque than CI engines normally used in trucks, pick-ups and busses. Therefore CI engines are also adapted to gas fuelling as dual-fuel engines. Comparison of NG SI engines and dual-fuel engines is performed. Performances and emissions of gas automotive engines are presented. World natural gas reserves, natural gas production physical and chemical properties of typical natural gas, natural gas vehicles and refuelling stations in the world, schematic of CNG fuelling installation of IVth and Vth generation, combustion system, natural gas admission and control in DF NG engine, schematic of ADCR engine adapted to CNG fuelling are presented in the paper.
Źródło:
Journal of KONES; 2009, 16, 3; 173-183
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Change in engine power in the event of electronic components failures
Autorzy:
Šarkan, Branislav
Loman, Michal
Senko, Šimon
Richtář, Michal
Gołębiowski, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/2200797.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
engine power
vehicle
electronic component
failure
engine control unit
Opis:
In a conventional internal combustion engine, only electrical controls are used to prepare the fuel mixture. All parts must operate flawlessly in order for the vehicle and its components to operate correctly. Road safety may be negatively impacted by the failure of specific components. The purpose of the study was to ascertain how much the malfunction of particular electrical components affects how the vehicle operates. The vehicle’s individual electronic parts were removed, and the engine power was then assessed. The primary determinant of a vehicle’s technical condition is thought to be its engine power. The preparation of the combustion mixture was affected by the individual component disconnections, which reduced the vehicle’s performance. A vehicle with an in-line four-cylinder engine was used for the experiment, which was conducted in a lab setting. This vehicle’s eight components were gradually disengaged. The change in engine power was observed while they were disconnected. The measured values were always evaluated in terms of an automobile that had no defects and was in excellent condition. The study’s findings demonstrate that there are circumstances in which a vehicle’s usual operation is adversely affected when one or more of its electrical components malfunctions.
Źródło:
Archiwum Motoryzacji; 2022, 98, 4; 40--55
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy consumption and carbon footprint of an electric vehicle and a vehicle with an internal combustion engine
Autorzy:
Muha, R.
Perosa, A.
Powiązania:
https://bibliotekanauki.pl/articles/374029.pdf
Data publikacji:
2018
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
electric vehicle
vehicle with an internal combustion engine
carbon footprint
energy consumption
pojazd elektryczny
pojazd z silnikiem spalinowym
ślad węglowy
zużycie energii
Opis:
The use of electrically powered vehicles is becoming more and more established in practice and represents a promising solution in future ensuring quality mobility and reducing the pollution in the environment. Since these vehicles are high-priced, and there is still a low awareness among consumers in terms of energy consumption and pollution, vehicles with an internal combustion engine remain the norm. For this purpose, the study, here, provides an energy consumption estimate of an electric vehicle and thus its carbon footprint and compares it to the energy consumption and carbon footprint of a vehicle with an internal combustion engine. The results of this study reveal the orientation for the use of electric vehicles in future, in terms of raising awareness among the individual manufacturers, consumers and, last but not the least, the society as a whole, which is committed to sustainable developmental orientations.
Źródło:
Transport Problems; 2018, 13, 2; 49-58
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The flexibility of compression-ignition engines of Scania trucks
Elastycznosc silnikow o zaplonie samoczynnym samochodow Scania
Autorzy:
Myslowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/793765.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
engine
flexibility
Scania engine
motor vehicle
combustion
compression
ignition engine
dynamic property
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 1
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of internal combustion diesel engines operated in construction and mining
Autorzy:
Magdziak-Tokłowicz, M.
Miksiewicz, K.
Reksa, M.
Magdziak, D.
Powiązania:
https://bibliotekanauki.pl/articles/241683.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
engine diagnostics
construction machines
mining machinery vehicle operation
SI engine
Opis:
Mining machinery and equipment belong to the group of special machines working in extreme conditions. Mining machines are used in difficult conditions such as limited supplies of fresh air, heat from the rock, in places with high humidity and heavy dust. In other specifics related to the extraction process is brine, harmful compounds such as sulphur dioxide, or rock debris raining down. The machines are operated in continuous mode, the clock. Working in mining conditions machines are exposed to frequent breakdowns and malfunctions. Identifying of failure diesel engines can be cumbersome in these conditions and time-consuming, leading to longer downtime, thereby reducing operating efficiency and increased cost. Therefore, in the paper was a review and analysis methods for the diagnosis of internal combustion diesel engines used in machines built and used to power machines in underground mining. On the basis of diagnostic testing was performed analysis of cases occurring malfunctions and failures.
Źródło:
Journal of KONES; 2015, 22, 4; 191-199
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of the usability of selected stationary load cycles for the assessment of the tractor engine economy
Analiza przydatnosci wybranych stacjonarnych cykli obciazen dla oceny ekonomicznosci silnikow ciagnikow
Autorzy:
Sedlak, P.
Janicki, W.
Matuszak, K.
Powiązania:
https://bibliotekanauki.pl/articles/793679.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
combustion engine
operating index
engine
road vehicle
engine speed
fuel consumption
engine work cycle
tractor engine
stationary load cycle
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 1
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationships between Common Rail accumulator pressure and vehicle traction properties
Relacje między ciśnieniem w zasobniku common raila a wlaściwościami trakcyjnymi pojazdu
Autorzy:
Golebiewski, W.
Stoeck, T.
Powiązania:
https://bibliotekanauki.pl/articles/792112.pdf
Data publikacji:
2013
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
vehicle traction property
engine test
engine torque
effective power
Common Rail accumulator pressure
vehicle acceleration process
operating parameter
linear velocity
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2013, 13, 1
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design of a new engine dynamometer test stand for driving cycle simulation
Autorzy:
Kęder, M.
Grzeszczyk, R.
Merkisz, J.
Fuć, P.
Lijewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/246315.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
dynamic engine test stand
combustion engine
variable frequency drive
induction motor
vehicle model
Opis:
Dynamic combustion engine test stand allows a very accurate analysis of the engine work. The prototype of such a system was developed and built in a cooperation of Poznan University of Technology with the ODIUT Automex company. The system consists of an asynchronous motor controlled by a regenerative variable-frequency drive with an ability to return braking energy back to the power system. Together they permit to set very precise work points of the combustion engine in every time moment, unlike test stands with eddy current dynamometer, which are only able to brake the engine. Measuring system is used to gather data from all sensors, especially torque sensor, which records the torque on a drive shaft. Sensors are connected to electronic boards, which provide signal processing, and data acquisition. Fuel mass flow meter with temperature and pressure control allows regulating the parameters of fuel supplied to the engine. A set of applications is used for test stand management and data presentation and visualization. Real conditions and vehicle dynamics are emulated using advanced models to allow a comprehensive research of the combustion engine on the test stand. The paper covers the description of developed system, its components, software and models adapted in emulation. Moreover, it provides schematics of the system as well as a block diagram of the vehicle dynamic model.
Źródło:
Journal of KONES; 2014, 21, 4; 217-224
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Design considerations of a linear generator for a range extender application
Autorzy:
Seo, U.
Riemer, B.
Appunn, A.
Hameyer, K.
Powiązania:
https://bibliotekanauki.pl/articles/141103.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
linear generator
free piston engine
range extender electric vehicle
Opis:
The free piston linear generator is a new range extender concept for the application in a full electric vehicle. The free piston engine driven linear generators can achieve high efficiency at part and full load which is suitable for the range extender application. This paper presents requirements for designing a linear generator deduced from a basic analysis of a free piston linear generator.
Źródło:
Archives of Electrical Engineering; 2015, 64, 4; 581-592
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Real driving emissions : vehicle tests in variable terrain
Autorzy:
Merkisz, J.
Pielecha, J.
Powiązania:
https://bibliotekanauki.pl/articles/245283.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engine
exhaust emissions
vehicle testing
Real Driving Emissions
Opis:
This paper presents the results of tests conducted in real traffic conditions in a mountainous area, taking into account the natural topography characteristics. The tested vehicle was of SUV type (Sport Utility Vehicle) with gasoline and Diesel engine, complying with emission standard Euro 5. Using the portable system for measurement of harmful substances, measurements of pollution emissions were conducted. The results obtained confirmed the substantial changes in the emission of harmful components of exhaust fumes with the change of the road grade. In all considered cases, it was confirmed that with the increasing route grade, the road emissions of all harmful components of exhaust fumes increase, however this increase varies for different pollutants. The most sensitive for spark ignition engines is emission of particulate matter, which is associated mainly with the compression ignition engines. For small changes of the road grade, the most sensitive seems to be road emission of carbon monoxide, for gasoline engines emission of particulate matter is specific, first, to all diesel engines, increase of the road grade to 10% caused on average twofold increase in the emission of harmful components of exhaust gases.
Źródło:
Journal of KONES; 2015, 22, 1; 217-225
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Klasyfikacja warunków eksploatacji pojazdów z wykorzystaniem udziału czasu pracy silnika na biegu jałowym
Classification of the vehicle operating conditions with the use of the time share of the engine idling
Autorzy:
Kropiwnicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/314303.pdf
Data publikacji:
2011
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
eksploatacja pojazdów
czas pracy silnika
vehicle operation
time engine
Opis:
W pracy przedstawiono przykłady identyfikacji warunków eksploatacji pojazdu samochodowego zarejestrowane na terenie Gdańska, w regularnym ruchu miejskim. Uzyskane wyniki pozwoliły sformułować zasady klasyfikacji warunków eksploatacji pojazdu przy wykorzystaniu takich parametrów jak: średnia energochłonność jednostkowa przejazdu, udział fazy napędowej, udział czasu pracy silnika na biegu jałowym. Jednocześnie stwierdzono, że do identyfikacji warunków eksploatacji w mieście można wymiennie stosować średnią prędkość jazdy lub odwrotność udziału czasu pracy silnika na biegu jałowym, gdyż zależność między nimi ma charakter proporcjonalny.
The paper presents examples of identification of the operating conditions of vehicle registered in Gdansk, in regular city traffic. Obtained results allowed to formulate rules for the classification of the vehicle operating conditions, using parameters such as average specific energy consumption of the journey, the share of the drive phase, the time share of the engine idling. At the same time, it was found that the identification of the operating conditions can be worked out with use of an average driving speed or the inverse of the time share of the engine idling, as the relationship between them is proportionate.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2011, 12, 5; 204-209
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 82

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