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Tytuł:
Analysis of the procedure of evaluation of the technical condition of a high-pressure common rail fuel pump using a test bed
Autorzy:
Bor, M.
Idzior, M.
Karpiuk, W.
Smolec, R.
Powiązania:
https://bibliotekanauki.pl/articles/243763.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
common rail
test bench
diagnostic
Opis:
Piston displacement pumps use in common rail fuel injection systems generates very high pressure, reaching even 300 MPa. Maintaining such a high pressure is possible thanks to very precise machining resulting in as little clearance between the piston-cylinder assemblies. Due to very high forces operating in the systems and relatively unfavourable lubrication conditions resulting from using fuel as lubricants, the pumps are subject to wear and consequently lose their operating parameters. The high cost of production of the pumps, resulting from their technological advancement, forced their manufacturers to introduce technologies for diagnosing and regenerating them. The diagnostics consists in removing the pump from the engine and having it verified using a test bed. The first stage consists of evaluating the pump’s flow at null pressure; follow by evaluation of its maximal delivery for the pressure of 100 MPa. The obtained values are compared to the values achieved by a new pump. The effect of negative evaluation on a test bed is the disassembly of the pump, verification of the condition of its parts and replacement of the damaged elements. The authors examined new and used pumps on a tested, aiming to determine the characteristics of delivery of a pump for various pressures. The objective of the research was to identify the actual points in the pump’s operation at which the delivery drops the most due to the wear. The highest difference in delivery was found to exist for the maximal compression pressure. The obtained results were analysed and the possibility of changing the pump diagnostics procedure with the use of a test bed was determined.
Źródło:
Journal of KONES; 2018, 25, 3; 65-70
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza porównawcza procedur zadawania momentu obrotowegona hamowni silnikowej
Comparative analysis of procedures for engine torque control on a test bench
Autorzy:
Pietras, D.
Powiązania:
https://bibliotekanauki.pl/articles/157162.pdf
Data publikacji:
2010
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
hamownia silnikowa
badania silników
test bench
engine tests
Opis:
Współczesne silnikowe stanowiska hamownicze stwarzają szerokie możliwości w symulowaniu rzeczywistych warunków pracy badanych silników oraz zapewniają szerokie możliwości pomiarowe z wykorzystaniem bardzo specjalistycznego sprzętu pomiarowego. Dokładność utrzymywania przez hamulec zadanych nastaw regulacyjnych: prędkości obrotowej oraz obciążenia istotnie wpływa na wyniki realizowanych badań doświadczalnych, dla których wymagana jest duża powtarzalność i dokładność pomiarowa. W artykule przedstawiono analizę porównawczą dwóch procedur badawczych: zadawania momentu oraz zadawania przyspieszenia, stosowanych w badaniach silników na stanowisku hamowniczym z punktu widzenia ich wpływu na wskaźniki pracy silnika, zawartość składników spalin i zadymienie. Ponadto omówione zostało stanowisko badawcze, oraz system sterowania hamownią.
Strict requirements of the exhaust emission standards as well as the ongoing drive towards fuel consumption reduction, while improving performance, are the main modern development goals placed on internal combustion engines manufacturers. Addressing this task requires the use of sophisticated research instruments of high accuracy for scientific investigations and development work. Hence, a well chosen engine test bench is also very important. Modern engine test benches create significant opportunities for simulating real working conditions of the engine under investigation, and ensure the extensive measurements capabilities, using highly specialised measuring equipment. The controlling accuracy of engine dynamometer parameters (such as rotational speed and load) influences significantly the results of experimental studies carried out for which high repeatability and accuracy of measurements are required. The paper presents a comparative analysis of two test procedures: torque and acceleration control, both of which are used for engine investigations, in terms of their impact on the indices of engine operation, exhaust emissions and smoke. The engine test bench and the dynamometer control system are also discussed.
Źródło:
Pomiary Automatyka Kontrola; 2010, R. 56, nr 3, 3; 221-224
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The new stand for aging of biocomponents and biofuels process testing at relatively short time
Autorzy:
Dzięgielewski, W.
Kaźmierczak, U.
Kulczycki, A.
Okniński, R.
Stefanowicz, P.
Powiązania:
https://bibliotekanauki.pl/articles/949517.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
biofuels
biocomponents
ageing process
test bench
method of measuring
Opis:
In the paper, the concept of a model bench for accelerated ageing of bio-components and biofuels was presented. It is used to simulate the ageing process of biofuels and components of vegetable or animal origin, taking place during storage in the storage tanks. The construction of the bench’s essential elements and its equipment were designed and implemented in such a way as to mostly reflect actual storage conditions in large capacity tanks. An additional and unprecedented function of the bench includes the possibility to simulate the product transport conditions. Furthermore, a method of the test, with the use of simultaneously performed traditional tests on the physical and chemical properties monitored in the process of storage was presented. An analysis of the relation between values of the parameters obtained with different methods (on the model bench and under laboratory conditions) was conducted. In addition, their usefulness to assess the impact of logistic processes on the product quality was presented. In the paper, the results of the work executed within the framework of the project “Development of a prototype of the monitoring system the ageing rate and degree of bio-components and biofuels” within the Program Innovative Economy Operational Programme, Measure 1.4. “Support for goal-oriented projects” were used.
Źródło:
Journal of KONES; 2016, 23, 2; 105-112
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A test bench setup with programmable trajectory for IMU-based dataglove development
Autorzy:
Mańkowski, T.
Tomczyński, J.
Kaczmarek, P.
Powiązania:
https://bibliotekanauki.pl/articles/973058.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
dataglove
test bench
IMU
MARG
Universal Robots
UR3
Opis:
This paper presents a test bench created during development of an IMU-based dataglove. The system allows gathering synchronised hand phantom posture and trajectory, together with inertial sensor data for evaluation of posture recognition algorithms. The setup includes an inertial measurement system, with IMU modules designed to be mounted on human hand or a phantom, together with proper embedded firmware and PC software. The system uses a collaborative Universal Robots UR3 robot arm for generation of trajectories and as a source of ground truth data. The program used to control the robot together with a method of gathered data synchronisation are described. The test bench has been successfully used during development of a joint angles estimating algorithm.
Źródło:
Measurement Automation Monitoring; 2016, 62, 5; 178-180
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of diesel fuel mixture and camelina oil ester on the process of fuel injection in traction engine
Autorzy:
Orliński, S.
Orliński, P.
Wojs, M. K.
Powiązania:
https://bibliotekanauki.pl/articles/246900.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
fuel plant
process of injection
engine test bench diesel engine
Opis:
This paper presents the results of comparative research on basic physical and chemical properties of pure diesel fuel and two types’ mixtures of Camelina oil ester (Camelina oil ester content of the mixture was 10% and 15%) and diesel fuel. Application of these mixtures has different physicochemical properties to power supply diesel engine, made it possible to detect existing differences in the injection process (pumping and spraying). The analysis of the injection process has been defined through experimental graphs of the fuel pressure in injection line and registered height of the needle injector. With the knowledge of these two fast-changing engine parameters and loadvelocity conditions, there were calculated: fuel flow speed from nozzle, range and fuel spray disintegration time and the average critical diameter of the droplets. In the final part of the article it was shown, that the fuel with different physicochemical properties has a significant impact on the injection process. There were also made a comparative assessment of the suitability test compounds for use in service.
Źródło:
Journal of KONES; 2013, 20, 1; 255-261
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stanowisko dydaktyczne do badania procesu erozji
A didactic stand for testing the erosion process
Autorzy:
Tarasiuk, Wojciech
Panek, Izabela
Powiązania:
https://bibliotekanauki.pl/articles/271252.pdf
Data publikacji:
2019
Wydawca:
Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:
erozja
stanowisko badawcze
zużycie
sterilization
test bench
food raw materials
Opis:
W pracy przedstawiono projekt mobilnego stanowiska do badań procesu erozji uderzeniowej. Konstrukcja urządzenia pozwala na prowadzenie badań w zamkniętych pomieszczeniach, a niektóre czynności pomiarowe zostały zautomatyzowane. Urządzenie umożliwia ocenę wpływu kąta padania ścierniwa na intensywność zużycia erozyjnego. Parametrami, którymi można sterować, są: kąt padania strugi ścierniwa, odległość dyszy od badanej powierzchni, prędkość ścierniwa, rodzaj ścierniwa. W poniższej pracy została opisana koncepcja i zasada działania stanowiska.
The paper presents a project of a mobile stand for research on the erosion process. The construction of the device makes it possible to conduct tests in closed rooms, and some of the measurement activities have been automated. The device enables the assessment of the influence of the angle of abrasive fall on the intensity of erosion wear. Parameters that can be controlled are: the angle of incidence of the abrasive stream, the distance of the nozzle from the tested surface, the speed of the abrasive, the type of abrasive. In this paper describes the concept and principle of operation of the stand.
Źródło:
Aparatura Badawcza i Dydaktyczna; 2019, 24, 3; 212-215
2392-1765
Pojawia się w:
Aparatura Badawcza i Dydaktyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Build Testbenches for Verification in Shift Register ICs using SystemVerilog
Autorzy:
Widianto, M.
Chasrun, H.
Lis, Robert
Powiązania:
https://bibliotekanauki.pl/articles/2134048.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
test bench
verification
shift register IC
stuck-at-faults
SystemVerilog
Opis:
A testbench is built to verify a functionality of a shift register IC (Integrated Circuit) from stuck-at-faults, stuck-at-1 as well as stuck-at-0. The testbench is supported by components, i.e., generator, interface, driver, monitor, scoreboard, environment, test, and testbench top. The IC consists of sequential logic circuits of D-type flip-flops. The faults may occur at interconnects between the circuits inside the IC. In order to examine the functionality from the faults, both the testbench and the IC are designed using SystemVerilog and simulated using Questasim simulator. Simulation results show the faults may be detected by the testbench. Moreover, the detected faults may be indicated by error statements in transcript results of the simulator.
Źródło:
International Journal of Electronics and Telecommunications; 2022, 68, 3; 619--623
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of structural features on vibration of the propeller engine test bench
Autorzy:
Ostapski, W.
Aromiński, A.
Tułodziecki, M.
Powiązania:
https://bibliotekanauki.pl/articles/280586.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
propeller engine test bench
propeller vibration
digital modelling
CAD
construction
Opis:
The paper concerns the prototype of a propeller engine test bench stand designed for durability tests of airplane piston engines of 150-250 kW power range (Ostapski, 2011b, 2008). The technical data of the prototype engines to be tested on the bench have been adopted. It is obvious that at the beginning of the design process there is no information about the vibration spectrum of the propeller shaft, which is at the production process at that time. The basic 3D model of test bench constructional variants are presented in the article. Modes and frequencies of free vibrations are defined in ANSYS environment for both the loaded and unloaded structure and for various design variants. The estimated vibration frequency range for the propeller shaft varies from ƒ = 22 to ƒ = 360 Hz. In such a case, there is no easy way for rational test bench construction to be completely “untuned” to the vibration forcing load. This is the reason for introducing the basic model and few its modifications. After first engine tests, it should be possible to separate natural vibrations of the bench and high amplitude vibrations of the engine.
Źródło:
Journal of Theoretical and Applied Mechanics; 2015, 53, 1; 27-36
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary analysis of vibration signal test results registered at bench test stand of amv rosomak driving axis
Autorzy:
Walentynowicz, J.
Trawiński, G.
Dyga, G.
Polak, F.
Boruta, G.
Powiązania:
https://bibliotekanauki.pl/articles/242851.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
differential axle gears
test bench
vibration of elements
vibration analysis
Opis:
The methodology of measuring the vibration signal recorded on the casing of wheeled armoured vehicle ROSOMAK driving axis is presented. The study was performed on a test bench for different transmission conditions. A preliminary analysis of the frequency spectra vibration signals recorded. The test stand allows investigation of the differential axle gears under load similar to load during duty operation. It was possible by using the combustion engine and gearboxes and load transmission by using the dynamometer break. Have been described. Three methods of attaching acceleration sensors to differential gears: using screws, magnetic washers and probe handle. The results of comparisons of measurement results obtained using these methods. Finally, the sensors was mount by using the screw connections. Selected positions and points of temperature and vibration measures were described. Values of characteristic frequencies of differential axle gears vibration by moving the drive torque through these boxes were calculated. The spectra of the vibration signal determined during testing gearboxes were shown. It was state that of amplitude-frequency vibration spectra of signals recorded at selected points of differential axle gears casing are clearly visible characteristic frequencies but the vibration the bridge gear unit bridges distorted by vibration of the internal combustion engine and gearboxes. In a further stage of research should be included much larger number of the driving axis differentials investigated in various states of well-known technical conditions and should be lead accord to requirements of the active diagnostic experiment.
Źródło:
Journal of KONES; 2013, 20, 3; 419-426
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stanowisko do badań procesu sterylizacji surowców spożywczych stosowanych przy produkcji błonników pokarmowych
A stand for testing the sterilization process of food raw materials used in the production of dietary fibers
Autorzy:
Tarasiuk, Wojciech
Liszewski, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/1366494.pdf
Data publikacji:
2019
Wydawca:
Centralny Ośrodek Badawczo-Rozwojowy Aparatury Badawczej i Dydaktycznej, COBRABiD
Tematy:
sterylizacja
stanowisko badawcze
surowce spożywcze
sterilization
test bench
food raw materials
Opis:
W pracy przedstawiono stanowisko do badań procesu sterylizacji surowców spożywczych. Umożliwia ono sterowanie takimi parametrami jak czas sterylizacji, temperatura wygrzewania, temperatura pary wodnej. W celu weryfikacji skuteczności procesu sterylizacji w zależności od zastosowanych parametrów wykonano badania liczby drobnoustrojów oraz drożdży i pleśni w akredytowanym laboratorium. Materiałem poddanym badaniom była łuska kakao.
The paper presents a stand for testing the sterilization process of food raw materials. The controlled parameters are sterilization me, soaking temperature, steam temperature. In order to verify the efficiency of the sterilization process, depending on the mentioned parameters the quantity of microorganisms as well as yeasts and molds in cocoa shells was investigated in an accredited laboratory.
Źródło:
Aparatura Badawcza i Dydaktyczna; 2019, 24, 4; 249-253
2392-1765
Pojawia się w:
Aparatura Badawcza i Dydaktyczna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of weight wear of disc brake pads after test stands
Autorzy:
Sawczuk, Wojciech
Rilo Cañás, Armando-Miguel
Kołodziejski, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/32101708.pdf
Data publikacji:
2022-12-28
Wydawca:
Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
Tematy:
friction pad
pad wear by weight
brake test bench
camera IR
Opis:
The article presents the results of the research of a railway disc brake in the evaluation of the weight wear of friction pads. The tests were carried out on a certified brake stand where the friction and mechanical characteristics of the brake are determined. The stand was additionally equipped with a thermal imaging camera to observe the contact of the pads with the brake disc. Attention was also paid to examining the influence of such parameters of the braking process as the contact surface of the pad with the disc, the thickness of the pads as a determinant of their initial wear, the pressure of the pads to the disc, braking mass and braking speed on the weight wear of the friction pads.
Źródło:
Rail Vehicles/Pojazdy Szynowe; 2022, 3-4; 53-59
0138-0370
2719-9630
Pojawia się w:
Rail Vehicles/Pojazdy Szynowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stanowiskowe badanie zespołu przeniesienia napędu na przykładzie wielostopniowej przekładni zębatej
Testing of a transmission unit on a test bench
Autorzy:
Lisiecki, J.
Rosa, P.
Lisiecki, S.
Powiązania:
https://bibliotekanauki.pl/articles/395557.pdf
Data publikacji:
2012
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
badanie
przekładnia zębata
program badań
stanowisko badawcze
trwałość
test
transmission
test program
test bench
durability
Opis:
Celem artykułu było opisanie stanowiskowego badania trwałości wielostopniowej przekładni zębatej. W opracowaniu przedstawiono budowę wraz z opisem tego rodzaju stanowiska, omówiono program badania w oparciu o który przeprowadzany był test. Głównymi parametrami programu były prędkość obrotowa na poszczególnych biegach, odpowiadający jej przy tym moment obrotowy, wartość przełożenia, czas trwania stopnia. Tego rodzaju badanie niesie za sobą szereg zalet, między innymi możliwość ustalenia i oceny przyczyn wystąpienia uszkodzeń, bez potrzeby wykonywania długotrwałych i kosztownych badań drogowych lub poligonowych. Badanie to wykonane zostało w Przemysłowym Instytucie Motoryzacji (PIMOT).
The aim of the paper was to describe the durability of multi-gear transmission. The paper presents the construction of the test bench, description of the test program, and it's main parameters. Article presents method and the result of a transmission test. The test was conducted in automotive industry institute (PIMOT).
Źródło:
Postępy Nauki i Techniki; 2012, 12; 46-52
2080-4075
Pojawia się w:
Postępy Nauki i Techniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modification of a test bench for testing torsional stiffness
Autorzy:
Macikowski, Krzysztof Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/1179524.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
active stabilizer
modification
rectangular cross-section
test bench
torque issues
torsional stiffness
Opis:
Described modification concern a test bench for testing torsional stiffness. The bench was created to analyze behaviour a middle part of a new type of an active stabilizer. The middle part was was replaced by two or four profiles with rectangular cross-section which are constantly connected with not-changed parts of stabilizer (with its arms). Specially designed mechanism is responsible for changing stiffness and it performs it so that the profiles are expanded in the middle of sample on the same distance in opposite direction. An article contains brief description of mentioned test bench and one of a few issues which were revealed during investigations – weak accurancy of obtained results. It was determinated that modification in the area of the bench drive and change in recording system should allow on increase accuracy. After modifications became able to observe a phenomenon of changing torque behaviour, from linear to nonlinear, during twisting expanded sample.
Źródło:
World Scientific News; 2017, 76; 42-49
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibration isolators test bench
Autorzy:
Pobedin, A.
Kosov, O.
Shekhovtsov, K.
Powiązania:
https://bibliotekanauki.pl/articles/244493.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
vibration isolator
test bench
vehicle cabin
suspension
testing
elastic and damping characteristic
Opis:
The description of the scheme and design of the test bench for testing vibration isolators intended for use in the vehicle's cabin suspension. Test bench construction allows to implement a wide range of loadings on vibration isolator of the vehicle cabin, to investigate the impact of the loading's arm changing and to perform analysis of the vibration isolator’s elastic and damping characteristics changing impact on cushioning quality. Variant of the test bench construction modernization, which can allow applying typical exploitation loads, which include vertical and lateral components, is described. We propose a scheme of forced oscillations excitation system on the test bench by cam-eccentric mechanism. It includes a DC motor with stepless frequency regulation and with cams of different shape on its shaft, which affect the contact surface of the test bench's vertical H-beam of a rocker arm. We also propose a scheme of forced oscillations excitation system on the test bench by inertial exciter. It includes a DC motor with stepless frequency regulation with inertial vibration exciter on its shaft, which consists of a mass, placed eccentrically relative to the shaft axis. There are two variants of the test bench scheme – with the forced oscillations excitation device and without it.
Źródło:
Journal of KONES; 2011, 18, 1; 457-462
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
External speed characteristics in engine with multi-stage fuel injection
Autorzy:
Ambrozik, A.
Ambrozik, T.
Kurczyński, D.
Łagowski, P.
Powiązania:
https://bibliotekanauki.pl/articles/245939.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
piston internal combustion engine
characteristics
engine work parameters
test bench investigations
engine fuels
Opis:
Increasingly higher demands pnt on piston internal combustion engines arę aimed at reducing their harmful impact on the natural environment. This refers primarily to nitrogen oxides, particulate matter and noise emissions. The reduction in emissions ofnoxious components oj exhaust gases in engines is achieved by means of, among others, the use of catalysts decreasing nitrogen oxide emissions, particulate matter filters and oxidising catalysts decreasing carbon monoxide and hydrocarbon emissions. Common Rail injection systems make it possible to increase the engine power, and to reduce fuel consumption, exhaust gas toxicity and noise produced by engines. With Common Rail systems, the pattern of fuel injection process can be designed, consequently the combustion process can be controlled. The paper presents the results of test bench investigations into a compression ignition 1.3 Multijet engine with multistage fuel injection, which is manufactured in Poland by Fiat-GM Powertrain Polska Company. The tests were conducted at a stand constructed at the Heat Engines Laboratory ofthe Kielce University of Technology. The scope of investigations included determining economic and energetic parameters of the engine work, and also environmental parameters, such as the concentration of nitrogen oxides NOX, carbon monoxide CO and carbon dioxide CO2 in exhaust gases, and exhaust gas smokiness. In tests, the engine operated under speed conditions and it was fuelled by two commercial diesel oils that had different physical and chemical properties.
Źródło:
Journal of KONES; 2010, 17, 1; 9-16
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
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