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Tytuł:
Considerations for starting combustion engines with AC machines
Autorzy:
Monroy, Mauricio
Romero, Carlos A.
Henao, Edison
Powiązania:
https://bibliotekanauki.pl/articles/2174476.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
internal combustion engine
starter motor
AC machine
torque requirements
ISG
supercapacitor
silnik spalinowy
rozrusznik
maszyna prądu przemiennego
superkondensator
Opis:
To initiate its combustion cycles, internal combustion engines require a minimum rotational speed that can be given from several sources (muscular, electrical, pneumatic, among others). Advantages of initiating an ICE with an AC electrical machine is that it can integrate starter motor and generator in one device, provide a linear ramp of acceleration when starting, and assist the ICE in torque production. This article illustrates considerations for the design of a starting system with an AC electrical machine. Initially, criteria of torque, rotational speed and power requirements are analysed, considering resistances of compression, friction, and inertia of the slider-crank mechanism, as well as accessories, with a preliminary experimental validation. Also, types of three-phase AC electrical machines are put to comparison, as well as their associated electronic components needed for driving them in each case, concluding that AC induction machines require a complex 4-quadrant inverter. PM synchronous machines require a simpler inverter, but with highly specified power electronics components. The classical wound rotor machine requires the simplest inverter, with unidirectional power flow, less power transfer losses and less critical power electronics components. Finally, considerations for using of a battery assisted with supercapacitor as complementary DC power source are made.
Źródło:
Diagnostyka; 2023, 24, 1; art. no. 2023102
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
DME as a fuel for SI engines cars
DME jako paliwo do zasilania pojazdów z silnikami ZI
Autorzy:
Fabiś, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/1840893.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
DME
engine power
engine torque
gaseous fuels
gaseous fuel mixtures
moc silnika
moment obrotowy silnika
paliwo gazowe
mieszanina paliw gazowych
Opis:
The article presents an analysis of the possibility of using DME fuel to power internal combustion engines. The possibilities of using DME as an engine fuel in relation to world and European achievements have been widely discussed. Moreover, the preliminary results of the tests determining the possibility of using the DME-LPG mixture to power the diesel engine are presented. The research consisted in determining the influence of the DME-LPG mixture on the power and torque of the engine at various loads. The changes in the temperature of the exhaust gases were also determined in relation to the different proportions of DME in the mixture.
W artykule przedstawiono analizę możliwości zastosowania paliwa DME do zasilania silników spalinowych. Przeprowadzono szerokie omówienie możliwości zastosowania DME jako paliwa silnikowego w odniesieniu do osiągnięć światowych i europejskich. Ponadto przedstawiono wstępne wyniki badań określających możliwość zastosowania mieszaniny DME - LPG do zasilania silnika ZI. Badania polegały na określeniu wpływu mieszaniny DME - LPG na moc i moment obrotowy silnika przy różnych jego obciążeniach. Określono także zmiany temperatury gazów wylotowych w odniesieniu do różnych udziałów DME w mieszaninie.
Źródło:
Diagnostyka; 2021, 22, 1; 93-99
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stress Concentration Analysis of the Injection Pump Shaft
Autorzy:
Bałon, Paweł
Świątoniowski, Andrzej
Rejman, Edward
Kiełbasa, Bartłomiej
Smusz, Robert
Szostak, Janusz
Kowalski, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/102913.pdf
Data publikacji:
2020
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
pump shaft
diesel engine
FEM analysis
torque
torsion
pump drive shaft
wał pompy
silnik wysokoprężny
analiza MES
moment obrotowy
skręcanie
wał napędowy pompy
Opis:
The paper presents the methodology for designing the injection shaft drive for diesel engines with 2,3,4,6 and 8 cylinders as well as power from 2.5 to 52 kW per cylinder using the FEM method and experimental research. The pump is the original solution of the authors. The shaft is a basic part of the pump with a complex structure. In order to assess the state of stress in the shaft, the FEM analytical method was used and experimental tests were carried out, subjecting the shaft to torsional moment resulting from the transmitted power. Experimental studies confirmed the results of numerical calculations and the correctness of the adopted solution. The destructive tests were carried out to assess the maximum load capacity of the shaft, loading it with an increasing torque until visible plastic deformations occurred. This condition appeared at twice the moment (Ms = 602 Nm) in relation to the maximum predicted moment in operation (extreme operating conditions of the pump shaft). The theoretical studies confirmed very significant stress concentration (αk coefficient at the level of 2.63 or even 4.7), which may be the cause of fatigue cracks. It also determines the strength of the shaft and its torsional stiffness, which influences the proper functioning of the pump and ensures adequate fuel injection phases.
Źródło:
Advances in Science and Technology. Research Journal; 2020, 14, 2; 155-162
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostic aspects of a crankshaft torsional oscillations monitoring by IAS measurement
Autorzy:
Dereszewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/246784.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
diagnostics
diesel engine
torsional vibrations
torque
angular speed
diagnostyka
silnik wysokoprężny
drgania skrętne
moment obrotowy
prędkość kątowa
Opis:
Continuous monitoring of diesel engine performance under its operating is critical for prediction of malfunction development and subsequently functional failure detection. Analysis of Instantaneous Angular Speed (IAS) of the crankshaft is considered as one of non-intrusive and effective method of detection of combustion quality deterioration. The article contains presentation of attempt of monitoring of piston engine’s crankshaft torsional vibrations by measurement of Instantaneous Angular Speed at free, and power output ends of the engine’s crankshaft. The angular speed measurements was done using two optical sensors for reading the IAS, mounted at shaft line’s opposite ends, one at free end of the crankshaft and second at end of generator’s shaft. In the article is presented description of the measurement system and explanation of its mode of work. Experiments were based at two kinds of malfunction possible to be simulated at test bed. First one was simulation of a leak of fuel injection pump, the second one relayed on mounting of sets of injection valves with different nozzles characteristics (spraying nozzle angle), giving different parameters of fuel injection. Presented results of experiment derives from test cycle carried out using laboratory stand of Gdynia Maritime University equipped with 3- cylinder self − ignition engine, powering electric generator.
Źródło:
Journal of KONES; 2018, 25, 1; 67-74
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Processing of long lasting signals of torsional vibrations measured using incremental encoders
Autorzy:
Dereszewski, M.
Sikora, G.
Powiązania:
https://bibliotekanauki.pl/articles/243279.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
diagnostics
diesel engine
torsional vibrations
torque
angular speed
Opis:
The article describes processing method of a signal, coming from torsional deflections of an internal combustion piston engine’s crankshaft, registered using two optical encoders ETNP-10. Standard measurement and recording set ETNP-10 enables recording of Instantaneous Angular Speed values encompassing 10 revolutions of the crankshaft, what is equal to 5 cycles of four-stroke engine. That time duration is sufficient for analysis of changes of angular speed caused by, for example, malfunction of fuel injection valve, but is insufficient in case of observation characterized by low frequency changes with period of fluctuations, lower than 0.8 sec. Short time for recording makes impossible following of instantaneous angular speed deviations caused by magnitude modulation of engine’s load value. In the article is presented an algorithm written in MATLAB environment, which allows processing of the data recorded using the recorder DAS 1600 Sefram. The recorded this way signals have around 26 seconds' duration of engine work. Data acquired from two encoders mounted at opposite sides of the shaft, in form of square magnitude signals are transformed into instantaneous speed and subsequently to instantaneous angular shift, what is basis for torsions calculation. In the article is also presented method of elimination of systematic error due to assumed method of averaging. Finally, some examples of results of torsional deflection measurement and analysis are presented.
Źródło:
Journal of KONES; 2018, 25, 4; 59-65
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnosing the automobile starting system
Autorzy:
Dziubiński, M.
Drozd, A.
Kordos, P.
Syta, A.
Powiązania:
https://bibliotekanauki.pl/articles/133690.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
starter
starting current
diagnostics
Matlab
engine torque
rozrusznik
prąd rozruchowy
moment obrotowy silnika
Opis:
This article presents a new method for analysing the torque of an internal combustion engine using registered electromechanical runs and magnetic field distribution in a starter. The aim of the study was to develop a model of the starting current of an internal combustion engine and carry out verification tests on real objects. The developed model allows to simulate the shutdown of individual cylinders. Experimental research was conducted using the Bosch FSA 740 equipment for four internal combustion engines under variable operating conditions. During testing, the starting current and relative compression in cylinders were recorded. Simulating the variable load of the starter, the magnetic induction distribution of the magnetic induction was recorded in the feed slot. The research will be used to develop a method of diagnosing the starter and determining the torque of the internal combustion engine.
Źródło:
Combustion Engines; 2017, 56, 3; 19-23
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie adaptacyjnego sterowania procesem blokowania przekładni hydrokinetycznej autobusów lotniskowych
Modeling adaptive controlling of hydrokinetic torque converter blocking process in airport buses
Autorzy:
Koralewski, G.
Wrona, R.
Powiązania:
https://bibliotekanauki.pl/articles/314454.pdf
Data publikacji:
2017
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
przekładnia hydrokinetyczna
układ napędowy
sterownik silnika
power transmission system
engine control unit (ECU)
torque converter
Opis:
Artykuł zawiera syntezę matematycznego modelu adaptacyjnego sterowania procesem blokowania przekładni hydrokinetycznej w układzie przeniesienia napędu autobusów lotniskowych. Może on być wykorzystany w sterownikach automatycznych hydromechanicznych skrzyń biegów do realizacji sterowania blokowaniem przekładni hydrokinetycznej podczas ruchu autobusu. Sterowanie adaptacyjne pozwala uwzględnić zmienność różnych czynników eksploatacyjnych takich jak: warunki drogowe, stan pracy silnika i przekładni hydrokinetycznej oraz przede wszystkim zmienność masy autobusu, co jest bardzo istotne w przypadku autobusów lotniskowych. Celem sterowania adaptacyjnego jest zwiększenie płynności jazdy autobusu a tym samym poprawa komfortu przewozu pasażerów i ich bezpieczeństwa.
The article contains a synthesis of the mathematic model of adaptive controlling of hydrokinetic torque blocking process in the power transmission system in airport buses. It can be used in automatic hydro-mechanical gearbox controllers to achieve controlling hydrokinetic torque converter by blocking, as the bus moves. Adaptive controlling allows to consider the changeability of various operating factors, such as: road conditions, engine operating conditions and hydrokinetic torque converter operating conditions, and, above all, buss weight variability, which is very significant in the case of airport buses. The aim of adaptive controlling is to increase the bus movement smoothness, and, at the same time, improvement of the passengers’ comfort and safety of transport.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2017, 18, 6; 800-805, CD
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Power loss in a combustion engine of a prototype vehicle
Autorzy:
Petróci, J.
Mantič, M.
Sloboda, O.
Powiązania:
https://bibliotekanauki.pl/articles/328918.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
prototype
combustion engine
power-torque measurement
engine diagnostics
compression pressure
silnik spalinowy
prototyp
energia
moc
pomiar
diagnostyka silnika
ciśnienie sprężania
Opis:
The paper deals with the analysis of power loss involved in an experimental single-cylinder internal combustion engine during its operation. The experimental engine has been developed and built entirely at the University for the purposes of Shell Eco-marathon. A series of experimental measurements was taken to discover the reasons for the issues we had encountered by obtaining output power characteristics and the value of compression pressure regularly at specific intervals. The data we obtained served to diagnose faults and to propose solutions for their elimination.
Źródło:
Diagnostyka; 2017, 18, 2; 59-64
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Torque characteristic of SI engine in dynamic operating states
Autorzy:
Bera, P.
Powiązania:
https://bibliotekanauki.pl/articles/133593.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
engine torque
dynamic states
engine characteristics
artificial neural network
moment obrotowy silnika
stany dynamiczne
charakterystyka silnika
sztuczne sieci neuronowe
Opis:
The article presents torque characteristic of the engine in dynamic operating conditions as a function of engine speed and throttle opening angle. All mentioned parameters are analyzed as independent variables over time. To develop such a characteristic an artificial neural network is used. The training data were obtained from measurements carried out on the test bench on SI engine. The operating states reflect all possible configurations of these parameters, which may occur during use of the vehicle in real traffic conditions. The article shows design of an artificial neural network that allows to designate the required dependences. Moreover, it describes the fit of the model to the measurement data, which clearly indicates its correctness. Then the developed characteristic in dynamic states is compared with the characteristic in static working states. The differences between them for selected cases of engine operation states are presented. It shows the versatility of the presented method.
Źródło:
Combustion Engines; 2017, 56, 4; 175-180
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring of torsional vibration of a crankshaft by instantaneous angular speed observations
Autorzy:
Dereszewski, M.
Powiązania:
https://bibliotekanauki.pl/articles/242907.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
diagnostics
diesel engine
torsional vibrations
torque
angular speed
Opis:
Continuous monitoring of diesel engine performance under its operating is critical for prediction of malfunction development and subsequently functional failure detection. Analysis of Instantaneous angular Speed (IAS) of the crankshaft is considered as one of non-intrusive and effective method of detection of combustion quality deterioration. The paper contains presentation of attempt of monitoring of piston engine’s crankshaft torsional vibrations by measurement of Instantaneous Angular Speed at free and power output ends of the engine. It is assumed that calculation of differential value of angular distance run between both ends in the same time shall give the picture of torsion angle magnitudes and phases of the peak values. Fir carrying out such measurements, high frequency of sampling was required. The angular speed measurements is to be done utilising two optical sensors for reading and two perforated discs mounted at shaft’s ends playing the role of speed signal emitters. In the paper is presented description of the measurement system and explanation of its mode of work. It is also shown analysis of measurement accuracy, way errors elimination and method of signals runs filtration. Presented results of experiment derives from test cycle carried out using laboratory stand of Gdynia Maritime University equipped with 3- cylinder self - ignition engine, powering electric generator.
Źródło:
Journal of KONES; 2016, 23, 1; 99-106
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact analysis of air humidity on operating parameters of diesel engine
Autorzy:
Haller, P.
Jankowski, A.
Kolanek, C.
Magdziak-Tokłowicz, M.
Wróbel, R.
Powiązania:
https://bibliotekanauki.pl/articles/246293.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
humidity
diesel engine
efficiency
engine power
engine torque
Opis:
A major problem in the combustion diesel engines is the different distribution of the mixture of air and fuel and also temperatures inside the combustion chamber. It helps the formation of points of the high and low oxygen concentration in the combustion chamber of the engine. In areas with a high concentration of oxygen, the combustion process produces very harmful NOx, and in places with low oxygen concentration, as a result of incomplete fuel combustion particles are created in the form of soot. This not regular distribution of the mixture of air and fuel and temperatures in the combustion chamber affect the limited maximum engine power and efficiency at his every operating cycle. One method for improving the combustion process is feeding into the engine air with high relative humidity. The study was conducted on a chassis dynamometer at the Department of Vehicles Engineering Wroclaw University of Technology. For the purposes of the study determined the external characteristics, including maximum engine power and maximum engine torque at different air relative humidity and quite similar air temperature. Analysis of the results of research shows that high air relative humidity has a positive effect on the work parameters of the diesel engine.
Źródło:
Journal of KONES; 2015, 22, 3; 37-42
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of rise of exhaust resistance at torque and angular speed of two-stroke engine
Autorzy:
Dereszewski, M.
Charchalis, A.
Powiązania:
https://bibliotekanauki.pl/articles/245462.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
diagnostics
diesel engine
exhaust pipe resistance
torque
angular speed
Opis:
It is assumed that elements of Exhaust Gases Cleaning Systems creates additional resistance along fumes duct and can affect energetic process of combustion. In the paper are presented results of researches aimed on detection and recognition of dumping effect in the exhaust pipeline using devices dedicated for engine’s torque and angular speed measurement. The experiment was carried out in test stand of Gdynia Maritime University; equipped with one-cylinder, low speed engine working in two-stroke mode. Effect of increasing of gas flow resistance was achieved by installation of shutters in cross-section of exhaust pipe. The shutters diminished active flow „window“ for 50% of normal crossection area of the exhaust pipe The plan of measurements encompasses registration of Instantaneous Angular Speed of the engine’s shaft and parallel registration of Instantaneous Value of Shaft Torsion, what reflect fluctuation of torque. Value of angular speed and toque enables exact calculation of power produced by the engine. Experiment included measurements at different levels of engine’s load and with changes of mean rotational speed. Angular speed and shaft’s torsion were measured and recorded using system ETNP-10 which is based on optical sensor and set of toothed discs. That method gives high accuracy of angular speed and torsion measurement. Results of experiment are presented as difference of related curves of values’ variations of angular speed and torsion occurring at the propulsion shaft connecting the engine and the water brake.
Źródło:
Journal of KONES; 2015, 22, 4; 87-93
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie hamowni drogowej do wyznaczenia parametrów operacyjnych silnika
The use of road dynamometer to determine engine operating parameters
Autorzy:
Gołębiewski, W.
Prajwowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/312884.pdf
Data publikacji:
2015
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
hamownia drogowa
moment obrotowy silnika
moc użyteczna silnika
road dynamometer
engine torque
engine power output
Opis:
W publikacji zaprezentowano możliwości hamowni drogowej do wyznaczania parametrów operacyjnych silnika do których należały : moment obrotowy, prędkość obrotowa oraz moc użyteczna jednostki napędowej. W artykule wykazano przydatność tej aparatury badawczej oraz porównano jej dokładność z dokładnością pomiarową urządzenia rolkowego hamowni podwoziowej.
The paper presents abilities of a road dynamometer to determine engine operating parameters which included: torque, speed and power output of the drive unit. The article shows the usefulness of this test equipments and compared its accuracy with precision measuring devices roller chassis dynamometer.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2015, 16, 6; 100-104
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analytical determination of the characteristics of engine power Fiat 1.3 JTD
Autorzy:
Prajwowski, K.
Gołębiewski, W.
Powiązania:
https://bibliotekanauki.pl/articles/245356.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engines
power
torque
engine flexibility
Opis:
Combustion engines are commonly used in car propulsion systems. They belong to a group of heat engines, i.e. those that convert the heat obtained from combustion of liquid or gaseous fuels into mechanical work. Engine parameters, such as power output (Pd ), torque (Ttq) and adaptability to variable traffic [motion] conditions, represent vehicle motion and its functional properties. The torque (Ttq) and the crankshaft speed (n) are measured directly with the use of dynamometer at specific measurement conditions but the power (Pd ) is determined indirectly. The relationships between these parameters are presented using external characteristics. They allow determination of engine adaptability to changes in the resistance to motion, i.e. its flexibility (E). In the paper, flexibility and analytical determination of the power and torque curves through application of Leidemann’s formulas are discussed. Results of the research conducted with the use of turbocharged compressionignition engine equipped with Common Rail fuel system are presented. The correlation between the power and torque curves based on Leidemann’s formulas and the real curves obtained on the basis of experimental research (with application of engine dynamometer) are verified. Finally, evaluation of the method applied for determining the power curves by the speed range of FIAT 1.3 JTD engine was made.
Źródło:
Journal of KONES; 2014, 21, 2; 267-272
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
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
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