Wszystkie pola: powertrain - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Hybrid diesel powertrain
Autorzy:: Stachura, A.
Mężyk, A.
Powiązania:: https://bibliotekanauki.pl/articles/247677.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: hybrid powertrain
diesel
eAWD
Opis:: Recent years have brought significant progress in the field of hybrid vehicles. Today, almost all major manufacturers offer this type of cars for their clients. Hybrid drives have lower fuel consumption and less emission of toxic gases. These benefits have led to the rapid popularization of hybrid cars on the global market. The growing demand for economical vehicles leads to increased work of engineers on new improvements. The biggest drawback of such drives is their high cost of purchasing. The result is lack of small urban car with such a powertrain. Following article describes the prototype of hybrid powertrain designed for small car with diesel engine. Vehicle design is based on the construction of Fiat Panda. The project includes construction of the prototype vehicle with eAWD powertrain. Prototype vehicle will be used for research into finding the optimum powertrain control algorithms. Test results will determine possible fuel savings and economical benefits of using hybrid cars in urban driving cycle. Research results will be compared with the results of simulations carried out Matlab/Simulink program. This comparison will confirm the correctness of simulation algorithms that can be used in the process of optimizing the drive control program. Research results confirm the correctness of simulation algorithms that can be used in the process of optimizing the drive control program.
Źródło:: Journal of KONES; 2010, 17, 4; 455-458
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Investigation of the integrated powertrain on the dynamometer stand
Autorzy:: Karczewski, M.
Szczęch, L.
Walentynowicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/243951.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
dynamometer stand
integrated powertrain
Opis:: Description of the test stand for investigation of the integrated powertrain (powerpack) for armoured modular vehicle (AMV), disassembled from vehicle, is presented in this paper. The powerpack unit consist of a diesel engine, a gearbox and a cooling unit with a hydraulic fan drive. The stand is equipped with measuring devices for torque measure, fuel consumption, exhaust smoke and exhaust gas components emission analysers. The powerpack has been loaded by a hydraulic dynamometer of power range up to 1250 kW. It is dynabar water dynamometer with high dynamics of load changes. For control the motor and drive, system the original control panels from the vehicle was used. The original start-up unit, mid fuel tank and air filters were used too. Research on the powerpack unit was made in the steady state versus the engine load and speed. The parameters of the engine and exhaust components were measured and compared with the catalogue values. Two modes of engine work were compared – economic and dynamic modes. Those differences between two modes are result of maximum fuel consumption decreasing. The parameters of engine work were comparable in middle and low range of engine load. On the stand investigation in transient states during free engine acceleration were made. It was found that additional load of engine is too high and this problem should be clarified.
Źródło:: Journal of KONES; 2013, 20, 4; 147-153
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Possibilities of reduction in vibrations of hybrid drive train
Możliwości redukcji drgań zespołu napędowego w układach hybrydowych
Autorzy:: Iskra, A.
Powiązania:: https://bibliotekanauki.pl/articles/950142.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
napęd hybrydowy
tłumienie drgań
powertrain
hybrid powertrain
vibration attenuation
Opis:: Podstawową wadą tłokowych silników spalinowych jest zmienność momentu obrotowego. Niezależnie od liczby cylindrów maksymalna wartość momentu obrotowego zwykle wielokrotnie przekracza moment średni co zmusza do stosowania odpowiednio wzmocnionych elementów przeniesienia napędu zwiększając masę i koszt produkcji silnika. W artykule zostanie przedstawiony sposób ograniczenia amplitudy momentu w elementach przeniesienia napędu w jednostkach hybrydowych. Taką jednostkę tworzy tłokowy silnik spalinowy i silnik elektryczny. Obserwowany w ostatnich latach rozwój jednostek hybrydowych w samochodach osobowych pozwala bez istotnego zwiększenia kosztów produkcji samochodu wykorzystać silnik elektryczny do przejmowania części momentu w suwie rozprężania i oddawania energii w tzw. Suwach pomocniczych. Proces taki stanowi tłumienie drgań, które dotychczas było realizowanie za pomocą tłumików wiskotycznych lub wielomasowych kół zamachowych. Wykorzystanie hybrydowego silnika elektrycznego do bezzwłocznej reakcji na moment nadwyżkowy lub niedobór momentu rodzi szereg problemów, które są przedmiotem rozważań w artykule. Po przeanalizowaniu różnorodnych sposobów reagowania hybrydowej maszyny elektrycznej na zmieniający się moment wykazano, że znacznie zmniejsza się stopień nierównomierności biegu zespołu napędowego jeśli moment oddziaływania dodatniego lub ujemnego maszyny elektrycznej jest równy średniemu momentowi tłokowego silnika spalinowego. W końcowej części referatu przedstawiono przebieg momentu sprzężenia w łańcuchu przeniesienia napędu bez tłumienia hybrydowego oraz z zastosowaniem takiego tłumienia.
A basic disadvantage of reciprocating machines is a variable torque. Despite the number of cylinders the maximum value of torque usually exceeds many times the torque mean value which requires the use of reinforced parts of drive train that eventually leads to an increase in engine mass and cost. This paper presents a way to limit the torque amplitude in drive train of hybrid units. Such unit consists of a combustion engine and electrical motor. A development of hybrid drive trains for passenger cars observed in recent years facilitates the application of electrical motor to take over a part of torque at the stroke of work and return the energy at so called auxiliary strokes without a considerable increase in car production costs. Such process makes vibrations damping that so far was carried out by the viscous dampers or multi mass flying wheels. The use of hybrid electrical motor for instant reaction to torque's surplus or shortage causes a number of problems analyzed in following paper. After a thorough analysis of different reactions of hybrid electrical motor to variable torque it was revealed that the level of drive train speed irregularity decreases when the auxiliary torque of electrical motor is close to the mean torque of the combustion engine. Finally, a course of coupling torque in drive train has been presented for the case of hybrid damping and without such damping.
Źródło:: Journal of KONES; 2007, 14, 3; 219-225
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Conception of a vehicle powered by fuel cell
Koncepcja pojazdu zasilanego ogniwem paliwowym
Autorzy:: Szczęch, L.
Rajewski, A.
Powiązania:: https://bibliotekanauki.pl/articles/242721.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
napędy
ogniwa paliwowe
hybrydowe układy napędowe
powertrain
fuel cell
hybrid powertrain
Opis:: W referacie przedstawiono koncepcję rozwiązania układu napędowego pojazdu zasilanego ogniwem paliwowym. Źródłem zasilania jest w nim ogniwo paliwowe typu PEMFC Nexa™ 1.2 kW. Zastosowane ogniwo dysponuje niewielką mocą w związku z czym należało opracować rozwiązanie pojazdu czterokołowego o niewielkiej masie własnej. Wykorzystano w tym celu podwozie niewielkiego jednoosobowego wózka golfowego, do którego trzeba było dodatkowo zaprojektować przednie zawieszenie. Pojazd napędzany jest dwoma silnikami elektrycznymi prądu stałego 24V/400W Najistotniejszym elementem było dobranie i skonfigurowanie układu zasilenia silników elektrycznych będących głównym źródłem napędu pojazdu. Ze względu na charakterystykę ogniwa paliwowego konieczne było zastosowanie przetwornika DC/DC umożliwiającego wykorzystanie ogniwa paliwowego do ładowania akumulatorów. W układzie zasilania zastosowano dwa dwunastowoltowe, żelowe akumulatory o pojemności 18 Ah. Energia z akumulatorów doprowadzana jest do układu sterowania silnikami napędowymi. Zastosowanie sterownika silników napędowych jest niezbędne w układzie elektrycznym, aby zmiana ich prędkości obrotowej była możliwa, a przez to zmiana prędkości jazdy. Układ powinien także zapewnić włączenie biegu wstecznego oraz hamowanie silnikami. Jest to ważne z tego względu, że jest to jedyny sposób na zatrzymanie pojazdu.
The conception of solution of a vehicle driving system supplied with a fuel cell was presented in report. The fuel cell type PEMFC Nexa ™ 1.2 kW is the source of power supply. Applied fuel cell disposes small power in connection with it was obvious to work out the solution of a four-wheeled vehicle with small own mass. It was used in this aim the chassis of a small one-man golf trolley to which we should to design front suspension in addition. Energy from batteries was brought to a driving engines control system. Vehicle was driven by two DC electric engines 24V/400W. It was the most essential factor choosing and configuration the system of power supply of electric engines being main source of vehicle driving. With regard on of fuel cell characteristic it was necessary to apply a DC/DC converter enabling the use the fuel cell to charge the batteries. Two 12 V gelly batteries with 18 Ah capacity in the power supplies system were applied. Application of the control unit for driving engines is necessary in the electric system, so that the change of their rotational speed is possible, and by reason of this the change of the travelling speeds. The electric system should also provide switching on the reverse and the applying of the braking with engines. It is important on that account that this is the only way of the vehicle stopping.
Źródło:: Journal of KONES; 2007, 14, 4; 479-486
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Simulation studies of hybrid powertrain for urban vehicles
Autorzy:: Lechowicz, A.
Augustynowicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/245466.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: hybrid drive
electrically controlled planetary gear
integrated control
Opis:: The powertrain of an urban vehicle was subjected to detailed simulations. This study was conducted with the aim of getting to know the operating principle, verification of assumptions adopted during its design and determination of most effective control procedures to be applied with regard to its powertrain. However, the most important aspect involved the aspect of the power distribution between the engines, electrical machine and vehicle wheels in the particular operating modes of the powertrain. A study was conducted in the MATLAB/Simulink environment with the purpose of finding a configuration of an electrical machine coupling with a combustion engine that offers the greatest advantages in terms of the range of the speed ratio, demanded performance of the electrical machine and maximum power output. The simulations indicated that control of the speed ratio of the vehicle could be gained by application of an electrically controlled planetary gear. The range of the transmission ratio is relative to the ratio of the planetary gear, speed range of the combustion engine as well as electrical machine. The efficiency of the battery charging in the hybrid mode is mostly relative to the operating point of the engine. The optimization of the process of power generation by the electrical machine requires that the operating point of the engine be maintained at a range at which its high performance is guaranteed.
Źródło:: Journal of KONES; 2017, 24, 4; 149-156
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Hybrid locomotives overview of construction solutions
Autorzy:: Konarzewski, M.
Niezgoda, T.
Stankiewicz, M.
Szurgott, P.
Powiązania:: https://bibliotekanauki.pl/articles/245761.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: hybrid powertrain
hybrid locomotive
diesel-electric locomotive
railway vehicles
Opis:: Nowadays, transportation becomes a significant source, apart from factories and power plants, of air pollution. Therefore, due to legal restrictions on the emission of noxious gases, other power sources for vehicles are necessary. Some of these power sources allow replacement of the internal combustion engine completely, whereas the other ones only support the engine operation. Hence, a hybrid powertrain – alternative to the drivetrain equipped with an internal combustion engine only – is increasingly being used. The hybrid powertrain was mostly applied in cars and buses but recently it has been also used in railway vehicles such as locomotives and multiple units. The paper presents a shortened and brief overview of construction solutions of selected hybrid locomotives. A list of the applied hybrid drive systems as well as the basic data and properties are provided. The most important variants of vehicles are compared. The presented material allows identification of the development trends in the considered area. The hybrid locomotive usually uses an onboard rechargeable energy storage system, placed between the power source and the traction transmission system connected to the wheelsets. Modification of a classic diesel-electric locomotives is a relatively simple procedure since they have all the components of a series hybrid transmission except the storage battery. Therefore, the existing and operated diesel-electric locomotives can be modified to increase their efficiency and reduce operating costs and emissions.
Źródło:: Journal of KONES; 2013, 20, 1; 127-134
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: The properties of powertrain with diesel engine and CVT transmission steering
Własności sterowania układu napędowego z silnikiem o ZS i przekładnią CVT
Autorzy:: Pawleski, Z.
Pałczyński, T.
Powiązania:: https://bibliotekanauki.pl/articles/243613.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: sterowanie silnikiem
przekładnia bezstopniowa
zużycie paliwa
emisja toksycznych składników spalin
modelowanie i symulacja układów napędowych pojazdów
engine steering
continuous variable transmission
fuel consumption
exhaust emission
modelling and simulation of vehicle powertrain
Opis:: At this paper there were described properties of powertrain with diesel engine and CVT transmission. At this system, engine load is not directly proportional to acceleration pedal position. Position of this pedal is only interpreted as the driver will, about demanded vehicle speed, and the way of achievement of it (dynamic, economic drive) in other word strategy choose. Nowadays ecologic conditionings, it means EURO 3, 4, 5 standards, requires from drive strategies to be ecologic. Decision of shift value and engine load (proportional to fuel dose, 100% for maximal dose) is elaborated at primary controller, in spite of driver, enabling economic and ecologic powertrain work. CVT transmission introducing additional degree of freedom to powertrain facilitate above steering strategies realization. Presented system has possibility, within the framework of possessed degrees of freedom, the realization of the modes of economic drive or dynamic drive. Assuming given acceleration in vehicle impetus gaining cycle, system is in possession of only one degree of freedom (the point of the constant angular engine speed) limiting the performance of system in optimum areas (proportional participation of PHASE II in all vehicle impetus gaining cycle). Advantages resultant from the above mentioned control method are particularly visible in the vehicle impetus gaining cycle, to the speed of 15 m/s, characteristic for the municipal conditions. For proposed control variant with „test 150" one is observing the lowering of the fuel expenditure and also lowering of toxic elements exhaust emissions. In the case of the emissions, decrease was at the level of 28% in comparison with the worst variant (regarding to this criteria) ,,test 315"; for cruise expenditure of fuel we obtain decrease about 17% for analogous tests.
W pracy zaprezentowano własności sterowania układu napędowego pojazdu z silnikiem o ZS i przekładnią bezstopniową CVT. W tym układzie, obciążenie silnika nie jest wprost proporcjonalne do położenia pedału przyspieszenia. Położenie pedału przyspieszenia jest interpretowane jako informacja o woli kierowcy, o zadanej prędkości pojazdu i sposobie jej osiągnięcia (jazda dynamiczna, ekonomiczna), czyli wyborze strategii jazdy. Obecne uwarunkowania ekologiczne tj. normy EURO 3, 4, 5, wymagają by odpowiadające im strategie jazdy były realizowane ekologiczne. Decyzja o wyborze przełożenia i stopniu obciążenia silnika (proporcjonalnym do wielkości dawki oleju napędowego, 100% dla dawki maksymalnej) jest podejmowana w sterowniku nadrzędnym, poza kierowcą, pozwalając ostatecznie na ekonomiczną i ekologiczną pracę całego układu napędowego. Przekładnia CVT wprowadzając do układu napędowego dodatkowy stopień swobody ułatwia realizację w/w strategii sterowania. Prezentowany układ ma możliwość, w ramach posiadanych stopni swobody, realizacji trybów jazdy ekonomicznej czy dynamicznej (Tab. 2 próba 150 i 315). Przyjmując zadane przyspieszenie w cyklu rozpędzania pojazdu, układ posiada tylko jeden stopień swobody (punkt stałej prędkości kątowej silnika) ograniczający pracę układu w obszarach optymalnych. (udział procentowy FAZY II w całym cyklu rozpędzania). Korzyści wynikające z powyższego sposobu sterowania są szczególnie widoczne w fazie rozpędzania pojazdu, do prędkości 15 m/s, charakterystycznej dla warunków miejskich. Dla proponowanego wariantu sterowania z „próbą 150" obserwuje się obniżenie zużycia paliwa a także toksycznych składników spalin. W przypadku emisji spadek ten wyniósł 28% w porównaniu do najgorszej pod względem tego kryterium wariantu tj. „próby 315"; dla przebiegowego zużycia paliwa uzyskujemy zmniejszenie o 17% dla analogicznych prób.
Źródło:: Journal of KONES; 2008, 15, 3; 433-441
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Simple tank-to-wheels analysis tool for future vehicle powertrains
Autorzy:: Vavra, J.
Macek, J.
Takats, M.
Cerovsky, Z.
Powiązania:: https://bibliotekanauki.pl/articles/243520.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: vehicle powertrain efficiency
internal combustion engine
fuel cells
simulation
driving cycle
Opis:: The future powertrains have to be properly assessed in early stages of vehicle design using simple and fast but reliable tools. The aim of the paper is to develop a simulation tool suitable for any of current transient cycles for finding of upper limits of tank-to-wheel efficiencies of recent or future vehicle powertrains in different concepts of vehicles to assess their potential, to find gaps between the state-of-the-art and to find ways to bridge them. The simulation philosophy and procedure may be described in the following steps. The testing cycle power demands on vehicle movement are analyzed and the optimum operation efficiency of a primary mover (engine, fuel cell, electric motor) is assigned to them. Dynamic torques at powertrain are accounted for. Speed, speed slip (driving machine/wheels) and load dependencies of transmission efficiency are simulated by simple models. In the case of a hybrid solution, charging and discharging efficiencies of energy accumulators and additional losses (e.g., in converters and inverters) are considered. The clear modular structure of the simulation tool enables the researcher to amend new features of powertrain components. The links to more detailed simulation tools are prepared. The simulation tool is described by regression and algebraic models (based on the results of higher level simulation tools) in a way giving immediate response during sensitivity analysis. The examples of tool calibration for different powertrains and results comparing powertrain potential are presented for lower medium class passenger car. The current simulation tool creates a useful link between detailed and accurate but CPU time demanding 1-D tools, based on partial differential equations, and rules-of-thumb, used sometimes for initial potential assessments. Moreover, the described tool does not require detailed data on the powertrain during early stage of design but it shows its potential for further development.
Źródło:: Journal of KONES; 2008, 15, 3; 525-534
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Advantages of using hybrid vehicles based on empirical studies on the chassis dynamometer in the WLTC test
Autorzy:: Gis, M.
Lasocki, J.
Powiązania:: https://bibliotekanauki.pl/articles/243969.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: road transport
combustion engines
hybrid powertrain
air pollution
exhausts emission
Opis:: Vehicles powered in alternative ways have an increasing share in the car market. Their use is becoming more and more justified considering the ever more stringent standards for the emission of harmful substances from the exhaust systems of internal combustion engines and the introduction of restrictions on vehicle traffic in city centres. The possibility of using in the propulsion systems only an electric motor or its simultaneous use with the internal combustion engine enables a significant reduction of emission of harmful exhaust gas pollutants. This applies in particular to urban areas, where there are numerous exceedances of acceptable air quality standards. This problem is most noticeable in larger cities in Poland, where there is a lot of traffic. It is therefore legitimate to promote alternative vehicles powered in alternative ways. Their dual power system gives the opportunity to significantly reduce the emission of harmful substances. Therefore, the article presents own research, carried out on a chassis dynamometer, using two passenger cars, one with a spark-ignition combustion engine and the second with a hybrid drive system containing a spark-ignition engine and an electric motor (system without the possibility of recharging batteries from external sources). Vehicles were characterized by similar mass and the same displacement volumes of internal combustion engines. The results of the tests made it possible to compare cars in terms of exhaust emissions. For testing purposes, a chassis dynamometer was used, on which the WLTC homologation cycle was repeatedly reproduced. This is a new driving cycle, which replaces the NEDC cycle used so far in the type approval procedure in the European Union.
Źródło:: Journal of KONES; 2018, 25, 4; 103-109
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Comparative analysis of the fuel consumption of vehicles equipped with various types of automatic transmissions
Autorzy:: Graba, M.
Mamala, J.
Bieniek, A.
Ulfik, A.
Powiązania:: https://bibliotekanauki.pl/articles/949511.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: automatic transmission
fuel consumption
control algorithm
CVT
automotive powertrain
road slope
Opis:: The growing number of vehicles moving on Polish roads equipped with various types of automatic transmissions prompted the authors of this publication to carry out research to assess the impact of the use of this type of transmission on the fuel consumption of these vehicles. The presented article presents a comparative analysis of the fuel consumption of vehicles of different manufacturers equipped with automatic transmissions moving in specially prepared driving cycles for research purposes. In the developed driving cycle, the vehicle speed was gradually increased every 10 km/h, maintaining each speed for a period of at least 30 seconds in order to stabilize the measurement results. The tests were carried out for various load stages of the drive system. Load differentiation was made by simulating driving in the prepared cycle for simulated different slopes of the road. The tests were carried out on the MAHA MSR500 chassis dynamometer, and the obtained results for the vehicle moving in automatic mode, where the transmission controller selected the gear ratio according to the programmed algorithm, were compared with the vehicle's fuel consumption for the vehicle gear selected by the driver in the driving cycle. The control software used to test the chassis dynamometer allows taking into account the increasing resistance of traffic along with the increase of vehicle speed, which greatly approximates the simulated conditions in the laboratory to the conditions on the road. The main purpose of this publication is to check whether using automatic transmissions or other control algorithm of these gears can achieve a reduction in fuel consumption.
Źródło:: Journal of KONES; 2018, 25, 4; 119-124
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Comparative analysis of the operating indexes of manually and automatically controlled passenger car powertrain system at variable load states
Autorzy:: Graba, M.
Mamala, J.
Bieniek, A.
Hennek, K.
Powiązania:: https://bibliotekanauki.pl/articles/245358.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuel consumption
spark ignition engine
variable load
engine efficiency
motion resistance
Opis:: This article reports the results of a study into operating parameters of a system consisting of an SI engine and a powertrain in a Fiat Panda passenger car in the conditions of a variable load. The analysis was primarily concerned with the variability of fuel consumption resulting of the changing load applied to the driving wheels in the conditions of a test performed on chassis dynamometer for manual and automatic controlled transmission gear change The test bench included a dedicated driving cycle, which was developed as cycle with periodically changed constant linear speed of the car every 10 km/h. According to the vehicle set speed, the load on its wheels was determined by the basic resistance as rolling resistance, air resistance and resistance corresponding to road inclination. Each period of a drive cycle corresponding to steady state driving gave the average instantaneous values of drive system performance indicators. The waveforms of these indicators were recorded and then averaged and presented as representative points of the powertrain system that were analysed. The focus of the study involved the identification of the points characterized with the minimum specific fuel consumption and impact of type of powertrain control on emission of CO2 from passenger car SI engines.
Źródło:: Journal of KONES; 2017, 24, 4; 39-46
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: The system of supercharging for the spark-ignition engine
Układ doładowania silnika o zapłonie iskrowym
Autorzy:: Mamala, J.
Jantos, J.
Brol, S.
Malewicz, K.
Bieniek, A.
Powiązania:: https://bibliotekanauki.pl/articles/243245.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: doładowanie zasobnikowe
zdolność przyspieszania
silnik spalinowy
combustion engine
powertrain systems
mechanical inertia
charging system
Opis:: The most disadvantageous system of the automobile, because of its damaging influence on environment is powertrain. This notion means engine connection with powertrain, which is very important in respect of ecology and safety. In the matter of safety very important is ability to accelerating with rapid depressed accelerator pedal. This situation takes place during overtaking process, which is caused by driving force deficiency from engine and powertrain mechanical inertia. It has negative influence on overtaking process and also on driving comfort. This phenomenon described in works, mainly come from accumulation of mechanical energy of powertrain. Numerous research centres in the world have undertaken examinations with an aim of solving this problem. However, a successful solution to this problem has to meet a number of prerequisites of technological and economic nature. The technological ones have to involve the uncomplicated construction while the economic ones are associated with the need for low cost of application of the solution put forward. The latter question is related to meeting numerous conditions and results from the effects of special testing as a result of specific operating conditions of power transmission system. In numerous research centres abroad additional energy sources including plungers or electrical motors are installed in order for the compensation of mechanical inertia. Another way of compensation for the mechanical inertia of the transmission system is gaining larger momentum from the driving unit at the time of its abrupt acceleration. A successful solution to this problem may lie in the application of an additional boost with surplus charging in the fuel supply system. They analyzed in the paper structure of the system of charging the internal-combustion engine up about the spark ignition in the purpose for the compensation for the shortage of the driving force on wheels of the car and results of preliminary research were presented.
Źródło:: Journal of KONES; 2007, 14, 2; 291-298
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Decreasing of dynamic loading of tractor’s powertrain by means of change of reactive element torsional stiffness
Autorzy:: Kalmikov, A. V.
Sokolov-Dobrev, N. S.
Shekhovtsov, V. V.
Ljashenko, M. V.
Potapov, P. V.
Powiązania:: https://bibliotekanauki.pl/articles/242814.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: dynamic load
power train
dynamic model
torsional vibration
caterpillar tractor
Opis:: This article describes original method proposed by authors that provides decreasing of dynamic loading of tractor’s powertrain by means of change of reactive element torsional stiffness. In tracked vehicles one of the most loaded elements is final drive unit which loaded by high dynamic modes. In tractor Chetra 6C-315, final drive is epicyclic where stopped element is ring gear. Authors propose using of strictly resilient (5 degrees in forward-backward direction) mount of ring gear instead of stiffening. Design study of installation between hub and gear ring that connects drum and crown gear, of the resilient metal plates pack was performed. This pack is kind of elastic coupling. Resilient packets of coupling sustain loads and smooth over peak dynamic loads and after elastic deformation of these packets rigid coupling between hub and coupling crown is provided at contact surfaces of skewed stops of hub and crown. To analyse efficiency of proposed method of dynamic loadings decreasing of powertrain elements three-dimensional model of powertrain was created in “Universal Mechanism”. In addition, solid model of caterpillar mover was created in the same software for analysis of influence on powertrain loadings of complex of kinematic and dynamic factors influencing forming of torque on driving sprockets. This article presents results of modelling of loading processes in powertrains elements with elastic coupling and without it during longitudinal motion at various speeds and in turns with various radii. Results show that elements dynamic loading at high loading dynamic modes in case of installed coupling is decreased by 20-30%.
Źródło:: Journal of KONES; 2015, 22, 1; 127-134
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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