Temat: transmission power - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Reliability design of power transmission
Autorzy:: Ivanovic, G.
Popovic, P.
Powiązania:: https://bibliotekanauki.pl/articles/243221.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: power transmission
stage of design
reliability design
design of a power transmission
Opis:: With the worldwide competition so strong, it is essential for motor vehicles, regarding to power transmission, to have high reliability. The reliability design is one of the ways to reach this objective. The stage of design is the most important one in the life cycle of a power transmission. Reliability design, within the designing stage, correlates directly with the power transmission reliability. The problem of a practical power transmission, design has been solved by developing of a methodology suited to the purpose. The basis of the developed design represents a contemporary approach to designing, comprising the phases of conceptual, preliminary and detail designs, with applying of the reliability design method within these phases. Approach to technical system design, the algorithms of the developed vehicle design from market-users by reliability preliminary design, detailed reliability design to manufacturing, reliability block diagram are presented in the paper. The developed and applied methodology enables reliability design of the vehicle and its elements, with the objective of obtaining a reliable vehicle which is one of the main requirements for the competitiveness in the market of automotive vehicles.
Źródło:: Journal of KONES; 2007, 14, 2; 201-208
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Influence of toothed gear geometry parameters on power transmission system vibroactivity
Autorzy:: Peruń, G.
Kozuba, J.
Powiązania:: https://bibliotekanauki.pl/articles/243062.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: power transmission system
vibroactivity
toothed gear
Opis:: The article presents selected results of experimental studies on the influence of chosen factors on the dynamic effects and vibroactivity of toothed gears in power transmission systems. The studies were performed on test stand with the gears operating in the circulating power system. On initial phase of the research, four pairs of helical gear wheels with the same value of gear ratios were designed and manufactured. The wheels differed by values of transverse contact ratio εα, face contact ratio εβ and total contact ration εC. In the research, the transverse vibration velocities of the shafts and housing of the tested toothed gear on FZG test stand was assumed to be the vibroactivity criterion. The measurements of the vibrations were carried out on the shafts and at seven points of the top plate of the housing. The vibrations were measured using a laser vibrometer and acceleration sensors. In addition, selected experimental results of measurements were compared with results of numerical simulations. To the simulations was used extended, identified dynamic model of the FZG test stand. The parameters of the wheels and the measured deviations were introduced into model. Obtained results confirm that by increasing the value of the contact ratio of the helical gear is possible reduction of dynamic phenomena occurring in the toothed gear.
Źródło:: Journal of KONES; 2017, 24, 4; 247-254
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Design of polymer gears for auxiliary power transmission systems of automotive vehicles
Autorzy:: Budzik, G.
Sobolak, M.
Jagiełowicz, P. E.
Powiązania:: https://bibliotekanauki.pl/articles/247538.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: polymer gears
auxiliary power transmission systems
Opis:: he polymer gears owing to their advantages are used in auxiliary power transmission systems of automotive . For example, the gears occur in transmissions of drives of car wipers or drives of car windows. The polymers are mainly used owing to lower production cost than in steel gears. The better silent-running and corrosion z are their other advantages in comparison with steel gears. Unfortunately, the polymer gears are not devoid of disadvantages. The main disadvantages are the lower efficiency and the lower capacity and what follows — the bigger dimensions. The conservative attitude of design of polymer gears is still noticeable. As a rule, such gears e steel gears, but the polymer gears are designed with bigger module. The most probably owing costs and lack of proper design recommendations, for design of polymer gears is used geometry of classic steel gears, because the procedure of analytical strength calculations for classic gears is well-know. The gears made from polymers are built in the mould matrices. In constructions of many mechanisms, the gears can be replaced in case of consumption or damage, so the construction of such gears that can be produced in the machine shop equipped with gear generating e for standard gears, was justified. Nowadays, the constructions of mechanisms used in automotive vehicles are often not even dismountable, but the whole mechanism is changed. It is worth changing the attitude to design of such transmissions. The method of gears production gives many opportunities. The production of gears with ited geometry, also such geometry that is impossible to obtain using traditional methods of machining, is possible in the mould matrices.
Źródło:: Journal of KONES; 2010, 17, 4; 73-77
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Numerical research of toothed gears geometry influence on power transmission system vibroactivity
Autorzy:: Peruń, G.
Kozuba, J.
Powiązania:: https://bibliotekanauki.pl/articles/245090.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: power transmission system
toothed gear
dynamic model
Opis:: The article presents results of numerical studies on the influence of selected factors on the dynamic effects and vibroactivity in power transmission system with toothed gear. Optimization of the constructions of the toothed gears is in many cases only possible by applying the numerical methods. Dynamic models allow determining the influence of a range of factors on the dynamic phenomena occurring during work of toothed gear. The studies were performed with use a custom developed dynamic model of a test stand with the gears operating in the circulating power system. It was assumed, that properly defined and identified model can be used to analyse dynamic phenomena occurring in meshing and bearings of toothed gears and allows optimizing their construction, especially allows minimization their vibroactivity. Numerical calculations were based on two sets of input data. Sets of input data consist information on all parameters included in the model, and which were determined during the identification process carried out in laboratory at two test stands. Selected results of simulations presented in this article prove, that identified dynamic model can be used to analysis of the impact of various constructional, technological and operational factors on the vibroactivity of the toothed gear.
Źródło:: Journal of KONES; 2017, 24, 4; 239-246
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Analysis of the drive constructions of extra-low pressure rubber-tired propellers of the vehicles for carrying goods
Autorzy:: Liashenko, M. V.
Chebanenko, A. P.
Shekhovtsov, V. V.
Powiązania:: https://bibliotekanauki.pl/articles/241663.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: cross-country vehicles
extra-low pressure tires
vehicle passability
transmission of power
transmission
Opis:: Overcoming of road impassibility, increase of vehicle passability are the issues that are always actual for the areas with insufficiently developed road network in remote regions of the North, the Far East, Siberia, and also the lack of roads in oil and gas production places and their transportation to gathering stations. This issue is also actual during rescue missions after natural disasters, emergency situations and technogeneous disasters. To solve this important issue domestic and foreign industries produced and produce different kinds of off-road vehicles and snow and swamp-going vehicles: caterpillar, ski-caterpillar, on low-pressure tires. The advantage of the latter is the discovery of new opportunities in transportation, ecological compatibility, improved productivity and passableness. It is important to mention that almost all vehicles on extra-low pressure tires can swim. The fact that they all possess hermetic frame contributes to it, what is more, this usage of extra-low pressure tires provides this opportunity. This opportunity to deliver goods by the vehicles with extra-low pressure tires (VELPT), having no restriction in exploitation in summer and winter in the conditions of Arctic weak tundra, increases the competitive power of these vehicles compared to caterpillar off-road vehicles. Moreover, their usage is much cheaper than delivery by helicopter. All these lead to the popularity of VELPT, the growth of the number of their types for various purposes and appearance of new producers of this type of off-road vehicles.
Źródło:: Journal of KONES; 2015, 22, 1; 181-184
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Determination of operating characteristics of naval gas turbines LM2500
Autorzy:: Pojawa, B.
Hołdowska, M.
Powiązania:: https://bibliotekanauki.pl/articles/247166.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: naval gas turbine
operating characteristics
power transmission system
Opis:: In the process of operation of naval gas turbine is necessary to know their parameters depending on their load, resulting from the swimming speed of the ship. The above equation is the operating characteristics. Classify them into: static (rotating, full-load, collaboration engine power with the receiver), dynamic (starting, acceleration and deceleration) and the universal. The paper presents the results of preliminary tests concern develop rotating characteristics an object of investigations work in the stationary states. The object of investigations was the main propulsion engines frigate type Oliver Hazard Perry which is supplied with the Polish Navy. The propulsion system consists of two naval gas turbine LM2500, reduction gear, shaft line and adjustable screw propeller. Preliminary tests were carried out during the departure of the ship to sea in a marine power plant. The measurements recorded in the engine load range from the minimum to the nominal used to develop characteristics. During the test engines have been simultaneous and the balanced load. In order to allow comparison of operating characteristics of engines tested, as well as references to the various weather conditions, the results of measurements on which it was set, brought to so-called "regulated by weather conditions". For these characteristics, using statistical analysis, were determined dependence of approximation. The received relationships can be used on need of technical diagnostics as well as the more far investigations of considered object of investigations.
Źródło:: Journal of KONES; 2011, 18, 4; 369-376
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Modelling and simulation of power transmission system oriented on diagnosis of failures in toothed gear
Autorzy:: Peruń, G.
Kozuba, J.
Pil’a, J.
Powiązania:: https://bibliotekanauki.pl/articles/949518.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: power transmission system
toothed gear
dynamic model
local damage
Opis:: In the article are presented chosen research results of influence of local defects in toothed gear on the vibroacoustic signal. Vibroacoustic methods of diagnostics are perfectly suitable to the task of monitoring the status of devices during their normal work. Monitoring of vibrations during operation is particular importance for industrial toothed gear as well gears working in the power transmission systems of aircrafts. Taken into account negative consequences of damages in toothed gears, determination of changes in vibroacoustic signal can prevent possible failures, and is therefore very important. Researches were performed with use residual signals created from synchronously averaged time signals generated by identified dynamic model of toothed gear working in circulating power system. Superior purpose of work is development of effectively methods of damage detection, especially in its early stages, what has great importance during operating aircrafts. The study shows that local damage of the wheels affects changes in the frequency distribution of vibroacoustic signals energy. The degree of damage significantly impacts to the possibility of detecting it on the basis of time signals analyses.
Źródło:: Journal of KONES; 2016, 23, 2; 275-283
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Minimization of dynamic forces in gear meshing by selection of the flexible couplings parameters
Autorzy:: Wojnar, G.
Powiązania:: https://bibliotekanauki.pl/articles/949494.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: couplings stiffness
couplings damping
power transmission systems
computer simulation
dynamic forces in meshing
Opis:: Torsional vibrations occur during drive systems operation. They may be especially hazardous if the freQuency of input functions is close to resonance frequency or if system resonance frequency is equal to subharmonic of input function frequency. What 's more, there is always a possibility of more than one resonance zone since the system is usually non-linear and multi-body. In design process of power transmission systems very important is correctly selection of the couplings parameters (especially flexibility). Couplings stiffness and damping have principle influence on shaft torsional vibrations. In case of power transmission with tooth gear the vibrations which are connected with dynamic forces in meshing. The paper presents influence of flexible couplings stiffness characteristics on dynamic forces in meshing. The investigations based on the measured couplings stiffness as well as damping and computer simulation ofpower transmission system with tooth gear operates at varying load. On the basis of conducted tests and analysis it may be stated that toothed wheels rotational speed increase does not always result in meshing dynamic forces increase. dynamic model ofdrive system with toothed gear is therefore a useful toolfor analysing couplings impact on meshing dynamic forces. This is illustrated by examples presented in current paper.
Źródło:: Journal of KONES; 2010, 17, 3; 497-504
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Wear processes of hydraulic plunger and barrel assemblies connected with the time of their work
Autorzy:: Ułanowicz, L.
Powiązania:: https://bibliotekanauki.pl/articles/246273.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fluid power transmission
pump delivery
volume flow rate
hydraulic precision pair
avionic technology
Opis:: The article discusses the wear processes of hydraulic plunger assemblies connected with the time of their work and the impact exerted by these processes on the value of parameters of a hydraulic plunger pump. It describes working conditions and loading of a hydraulic plunger assembly. The paper presents also the results of empirical analyses of the wear process of the connection of the plunger base with the working surface of the swivel disk, which is related to time and conditions of its work. It discusses the impact of the loading value and sliding speed on the character and intensity of the wear of the connection between the plunger base and the working surface of a swivel disk. Furthermore, it presents a general characteristic and mechanism responsible for the wear of the hydraulic plunger assembly through oxidation. The article also analyses the impact of the hardness of materials used for producing the hydraulic plunger assembly on the intensity of its wear. Another issue is the dependence of the coefficient of friction in the hydraulic plunger assembly on the contact pressure at different sliding speeds. Finally, the paper discusses the impact of wearing of the cooperating plunger base and the working surface of the swivel disk on the initial parameters of the hydraulic pump at a given working pressure and its volumetric efficiency.
Źródło:: Journal of KONES; 2014, 21, 4; 515-524
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Analysis methods of crankshafts stiffness characteristics
Autorzy:: Murawski, L.
Charchalis, A.
Powiązania:: https://bibliotekanauki.pl/articles/244837.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine engine
power transmission system
marine propulsion system
crankshaft springing
shaft line
boundary conditions
Opis:: Development of on-line diagnostic (monitoring) method of marine propulsion system working parameters is the authors' target. Crankshaft springing characteristics are one of the most important from the ships' main engines reliability point of view. Planned monitoring system will be able to verify crankshaft springing characteristics by continuous measurements of the crankshaft free-end's axial deformations. Development of the analysis methods of crankshaft's stiffness characteristics is the first step of planned SHM system. The main purpose of research is method developing of the springing analysis for the marine crankshafts in the high-power engines. Crankshaft modeling method, by Finite Element Method, has been discussed. Short overview of the crankshaft boundary conditions is presented. Bearings' oil film stiffness characteristics, ship hull stiffness characteristics and temperature deformation of the ship hull and main engine body are taking into account. Influence of the crankshaft's foundation stiffness on springing values is analysed. During the analyses it was proved that flexibility of engine foundation has a big influence upon the value of crankshaft springing. The authors' method of cylindrical mass and gas forces decompositions has been presented. Analysis of modeling precision of piston-crank system's forces has been performed. Results of calculations are well compatible in the terms of quality with the measurements data.
Źródło:: Journal of KONES; 2013, 20, 1; 219-226
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Identification of the ship's hull impact load on the base on the power transmission system's vibrations measurements
Identyfikacja obciążenia udarowego kadłuba okrętu na podstawie pomiaru drgań układu napędowego
Autorzy:: Dąbrowski, Z.
Grządziela, A.
Powiązania:: https://bibliotekanauki.pl/articles/244379.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: modelowanie systemów dynamicznych
eksplozja podwodna
układ napędowy
dynamic systems modelling
underwater explosion
power transmission system
Opis:: The following paper presents the results of an experiment in which an influence of underwater explosions on the ship's power transmission system dynamics was measured. The results, obtained for two different configurations of the object's position and the explosion's place, were compared. The experiment was conducted while the power transmission system was working, so that it was possible to define the relation between a hull's impact load and the vibrations ofpropeller shaft's bearings. As a result of this research, the methodology of measurements and signal analysis has been elaborated and, in consequence, the obtained data can be used to improve an vibroacoustic diagnostic system working on-line. Localisation of the explosives, the configuration of measurements points, measuring time before and after explosion, the comparing of the signal analysis using RMS and Peak value of the acceleration, the comparing of the signal analysis results in two frequency bands, the comparing of the signal analysis results, the comparing of the two explosion effects, the comparing of the two explosion effects are presented in the papers.
W artykule przedstawiono wyniki eksperymentu w którym badano wpływ wybuchów podwodnych na dynamikę układu napędowego okrętu. Porównano wyniki dla dwóch różnych usytuowań obiektu w stosunku do miejsca eksplozji. Eksperyment wykonano podczas pracy układu napędowego, co pozwoliło określić wpływ impulsowego obciążenia kadłuba na drgania łożysk wału śrubowego. Efektem badań jest opracowanie metodyki pomiaru i analizy sygnału wibroakustycznego pozwalającej na wykorzystanie uzyskanych danych do doskonalenia drganiowego systemu diagnostycznego pracującego w systemie (trybie) on-line. Schemat rozmieszczenia ładunków w trakcie badań, rozmieszczenie punktów pomiarowych, zakres czasu pomiaru przyspieszeń przed i po detonacji, porównanie wyników analiz pulsacji pęcherzy przy wykorzystaniu wartości szczytowej i wartości skutecznej przyspieszeń porównanie analiz przy różnych zakresach częstotliwości, porównanie analiz porównanie oddziaływań dla detonacji, porównanie oddziaływań dla detonacji, są przedstawione w artykule.
Źródło:: Journal of KONES; 2007, 14, 4; 67-74
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Effect of dynamic properties attributable to hydraulic lines onto operation of avionic
Autorzy:: Ułanowicz, L.
Powiązania:: https://bibliotekanauki.pl/articles/247057.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fluid power transmission
pump delivery
volume flow rate
hydrostatic (forcing) pressure
compressibility effect
viscous friction effect
Opis:: The present paper is dedicated to discuss how dynamic parameters of a hydraulic line intended to transfer hydraulic power from a source of hydraulic power (a hydraulic pump) to an actuating device (a hydraulic motor) can affect operation of an avionic hydraulic drive. Avionic hydraulic drives are operated with fast-varying waveforms of flow intensities and pressures. It is why analysis of most hydraulic drive systems must take account of compressibility of working fluid and elasticity of hydraulic lines. It leads to a wave model for propagation of energy variation down a hydraulic line (a pipe). The paper deals with flow of a compressible liquid via a hydraulic line with flexible walls. Theoretical deliberations were successfully verified by experimental research studies that were carried out on a dedicated test bench, therefore the presented amplitude vs. frequency characteristic curves of the hydraulic line could be obtained from both theoretical considerations and experimental research studied. The experimental research studies were carried out for hydraulic line terminated with a fixed flow restrictor alone and a flow restrictor combined with a hydraulic accumulator as well as for a hydraulic line supplied from a source of constant pressure and terminated with a valve with adjustable flow together with a hydraulic accumulator. The theoretical calculations for the amplitude vs. frequency characteristic curve are based on a model for a hydraulic line with its resistance depending on frequency.
Źródło:: Journal of KONES; 2011, 18, 4; 535-542
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: The influence of shaft line alignment accuracy on the operational reliability of marine propulsion systems
Autorzy:: Murawski, L.
Powiązania:: https://bibliotekanauki.pl/articles/241911.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: shaft line alignment
marine propulsion systems
propulsion system's bearings damages
operating parameters of the power transmission system
Opis:: The paper presents a method of identification parameters of shaft line alignment and its influence on operational reliability of marine propulsion system. The discussion about shaft line parameters (bearings' reactions, bending moment and shear forces acting on crankshaft or gear box, and stresses distribution in the shaft line) which has an influence on marine propulsion system reliability was presented. Proper shaft line alignment is often a problem for repair shipyards, for aged ships without sufficient documentation. Some data can be draw by measurements; e.g. shaft line dimensions or intermediate bearings' reactions. Other data (stern tube bearing load, real axis of shaft line) have to be determined on the base of calculations. Author proposed combined experimental-analytical method for identified and optimization (correction) some existing parameters and checking power transmission system’s foundation. Specialised software (based on Finite Element Method) has been developed for shaft line alignment calculations. Main novelties of the software are elastic supports (model of bearings – boundary conditions) of the shaft line, continuous support as a model of stern tube bearing and influence coefficients calculations. An example analysis with discussion has been performed for cargo ships with medium-speed main engine. Multi-variant computations supported by measurements of the ships’ shaft line have been carried out. Changes in shaft line alignment have been proposed in order to increase reliability of propulsion system.
Źródło:: Journal of KONES; 2016, 23, 1; 247-254
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Analysis of dynamic properties of hydraulic lines for fluid power transmission
Autorzy:: Ułanowicz, L.
Powiązania:: https://bibliotekanauki.pl/articles/247615.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fluid power transmission
delivery of a pump
volume flow rate
hydrostatic (forcing) pressure
compressibility effect
viscous friction effect
Opis:: This paper presents the results of a hydraulic line dynamic properties analysis taking into account inertia of the fluid flowing in rigid and flexible lines, the compressibility effect for this fluid and the viscous friction effect. The following are described and analyzed: solution of the wave equation in the form binding four variables: pressure and flow rate at the line input, and pressure and flow rate and the line output; two of the above-mentioned variables should be regarded as independent (input) and the other two as dependent (output), the accuracy comparison of distributed parameters model to lumped parameters model with regard to applicability range in hydraulic systems analysis, pressure value at given installation points as a response to rapid valve closing (transient response) or to valve opening (waterhammer effect). In these considerations the hydraulic line is regarded as a two-port with two inputs and two outputs with a definite transmittance matrix. Main considerations concern the variable resistance model. A general solution is given as a function of the Laplace operator. Introducing appropriate simplifications into the variable resistance model, the constant resistance model and lossless line model is obtained. Also, general solutions for three different lump parameter models are presented. For the lumped parameters lin presents three equivalent models possible, i.e. as: a symmetrical two-port, a two-port with shared resistance and a two-port with capacitance at the output.
Źródło:: Journal of KONES; 2010, 17, 3; 467-475
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Simulative comparison of the traction properties of Daewoo Lublin 3 Mi van with particular types of gearbox
Autorzy:: Prajwowski, K.
Gołębiewski, W.
Powiązania:: https://bibliotekanauki.pl/articles/244475.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: traction characteristics of a vehicle
theory of motion
combustion engines
external characteristic of an engine
power transmission system
Opis:: A problem of comparing the traction properties of Daewoo Lublin 3 Mi van with respective types of gearbox has been taken up in the paper. There were three gearbox types: TS5-21, PD.97 and ZF. These properties were concluded based on vehicle traction graph. They included: reaching the reserve driving force in respective gears, obtaining accelerations, overcoming the resistances to motion (rolling resistance, air resistance and grade resistance) as well as achieving the maximum speed. Vehicle traction diagram has been made based on the torque curve of Andoria 4CTi90 engine external characteristics obtained on engine test bed in a direct way using an AVL eddy current brake. The engine was supplied with a complete fuel dose and loaded with the resistance torque produced by engine brake. The characteristics was performed every 200 rpm from 1000 rpm to maximum revolutions and the other way from maximum revolutions to 1000 rpm every 200 rpm. The torque characteristics points were determined as a mean value obtained from these two measurements. After considering the data from engine external characteristics, vehicle information (including, among others, respective gear ratios and final drive ratio, under-the-bonnet power loss coefficient, and dynamic wheel radius) and the resistances to motion, a vehicle traction diagram of Daewoo Lublin 3 Mi van was made for three types of gearboxes. Based on this, the authors found that a Daewoo Lublin 3 Mi van equipped with ZF gearbox is the best from the point of view of traction properties.
Źródło:: Journal of KONES; 2011, 18, 1; 483-490
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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