Autor: Karczewski, M. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Algorithms of the SW-680 engine electronic governor
Algorytmy elektronicznego regulatora silnika SW-680
Autorzy:: Karczewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/244283.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: silnik spalinowy
sterowanie
regulator elektroniczny
algorytm sterowania
program sterowania
combustion engine
control
the electronic governor
algorithm of controlling
programme of controlling
Opis:: W elektronicznych układach sterowania silnikami o zapłonie samoczynnym kluczową kwestią jest stworzenie odpowiedniego programu dla centralnej jednostki sterującej, który mógłby jednocześnie i całościowo realizować funkcję regulatora prędkości obrotowej, korektora dawki paliwa, a w bardziej rozbudowanych wersjach sterować także innymi układami silnika. Opracowanie algorytmu sterowania silnikiem o zapłonie samoczynnym ze względu na konieczność uwzględnienia wielu czynników i sytuacji warunkujących pracę silnika jest procesem skomplikowanym i czasochłonnym. W artykule przedstawiono algorytm sterowania silnikiem SW-680 z regulatorem elektronicznym. Zakres pracy silnika podzielono na fazę rozruchu i użytecznej prędkości obrotowej silnika i dla każdej fazy opracowano algorytmy sterowania dawkowaniem paliwa. Przedstawiono metodykę korekcji dawki paliwa. Poprawność działania algorytmu została zweryfikowana doświadczalnie podczas badań poligonowych pojazdu wyposażonego w omawiany regulator. Oprogramowanie sterownika napisane w języku Flow Chart okno pakietu ISaGraf oraz C++. zostało eksperymentalnie zweryfikowane na stanowisku dynamometrycznym (podczas rozruch, w stanach ustalonych i nieustalonych oraz podczas odtwarzania zastępczego cyklu obciążenia). We wszystkich stanach pracy silnik pracował poprawnie.
Creation of a appropriate programme of electronic control systems in diesel engines is key factor to use a central control unit, which could simultaneously and all in all realize the function of control of revolution speed, correction of fuel dose and also in more complicated versions to control different parts of an engine. The study about algorithm of the diesel engine control with regard on necessity of cover of many situations and conditioning of the engine work is complicated process and time-consuming. In the article was introduced the algorithm of the SW -680 diesel engine controlling with the electronic governor. The range of the engine work was divided on phase of starting and phase useful revolution speed. In every phase fuel dosage was worked out according to the algorithms of control. The methodology of equalization of dose fuel was showed in the paper. The correctness of working of algorithm was verified during investigations of a vehicle equipped with the electronic controller. The control unit software worked out in the Flow chart the window of the ISaGraf pack and C++ was experimentally verified on the dynamometric stand (during start, in settled and unestablished states, and during modeling of supplementary cycle of load). The engine worked correctly in all states.
Źródło:: Journal of KONES; 2007, 14, 4; 143-151
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: 3D scanner working parameters : influence on an accuracy of mechanical vehicle element reproduction
Autorzy:: Karczewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/241566.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: 3D scanning
strain identification
photogrammetry
reverse engineering
skanowanie 3D
fotogrametria
inżynieria wsteczna
Opis:: In recent years, the reconstruction based on existing physical objects, plays an increasingly important role in research and everyday life. With the advancement of modern industry, more and more often, including automotive industry, modelling and deformation techniques of objects, based on reverse engineering, are used. One of such example is the reproduction of the geometry of motor vehicles using 3D scans. Damages of motor vehicles, cause local changes in the shape of the product and their size and character are directly related to the occurred reaction. However, to assess the damage extent and qualify the object for further repair, it is necessary thoroughly to know the condition of the object after the damage to select the appropriate technology and repair method. This is the case for reverse engineering, and 3D scanning using structural light. The aim of the study was to evaluate the influence of the parameters of the 3D scanner on the accuracy of reconstructing the geometry of the selected vehicle element – the rear door of the Skoda Octavia in two variants, non-deformed and deformed. The dimensions of door exceeded the range of the largest measuring area of used 3D scanner, so it was necessary to use the photogrammetric technique in order to generate a point model of the object that was used to compose the individual scans. Measurements were made with different measuring areas: 1000 x 800 x 800 mm, 500 x 400 x 400 mm and 250 x 250 x 200 mm. For the base field, 500 x 400 x 400 mm, several measurements were repeated in order to determine repeatability.
Źródło:: Journal of KONES; 2018, 25, 1; 215-223
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Assessment of dynamic qualities of the G9T engine with common rail system, FED with battlefield-use fuel blends with a biocomponent
Autorzy:: Karczewski, M.
Wilk, M.
Powiązania:: https://bibliotekanauki.pl/articles/244600.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
fuel system
F-34 fuel
ester
Opis:: The main aim of the study was to experimentally determine the influence of fuel blends of F-34 with biocomponents (rapeseed methyl esters and methyl alcohol) on the performance of an engine with high pressure fuel injection; Common Rail system was used as the example. The study included measurements of useful parameters of combustion and composition of exhaust gas. The studied engine was Renault G9T engine with Common Rail fuel system, fed with the following fuels: fuel base (diesel oil); aviation fuel, code NATO F-34; fuel blends of F-34 and rapeseed methyl esters of higher fatty acids; fuel blends of F-34 and anhydrous ethyl alcohol. The study showed that the parameters of Renault G9T engine with high pressure injection system fed with fuel blends of F-34 with biocomponents changed in comparison to those obtained with the use of the fuel base: diesel oil. As a result of the study it must be stated that fuel blends of F-34 with RME and F-34 with ethyl alcohol can be used as alternative fuel for diesel engines with high pressure Common Rail injection system.
Źródło:: Journal of KONES; 2011, 18, 1; 243-251
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Testing methodology of small unmanned platform on the chassis dyno
Autorzy:: Karczewski, M.
Polak, F.
Powiązania:: https://bibliotekanauki.pl/articles/243717.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road transport
simulation
dyno chassis
examination of unmanned vehicle
Opis:: The article shows construction solution of chassis dyno, designed for small-unmanned platform hybrid drive testing. Brief fore design of chassis dyno were also presented. Most important parts of dyno are module design of dyno. Each of dyno module consists of one free roll and one roll powered by electrical engine for inertia braking. Asynchronous electric engines for dyno stand were selected. Maximum torque, with respect to vehicle wheel torque has to be greater than Mo < 50 Nm, maximum linear speed of vehicle can’t be greater than Vp ≤ 40 km/h, minimal vehicle dimensions: axle base greater than 500 mm, wheel base greater than 770 mm, inverters allow to connect in series enable synchronous operation by computer, during tests, received energy is dispersed in resistors, emergency shut off of each engines. Methodology of measurements, based on UDC test, was presented. Dyno stand was used for hybrid propulsion testing of small-unmanned vehicle. Dyno was used for hybrid drive testing, where measurement of electrical parameters, proportional to load of vehicle drive system, were collected and other parameters such as battery temperature, and electric engines or fuel consumption during tests. Tests were performed during various load and speed of vehicle. The developed methodology of research should allow for a comprehensive study of this type of vehicle in terms of overall efficiency, reliability and energy needs.
Źródło:: Journal of KONES; 2016, 23, 4; 201-207
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Investigation of diesel engine with the supply system type common rail supplied fuel F-34 and biofuel
Autorzy:: Karczewski, M.
Wilk, M.
Powiązania:: https://bibliotekanauki.pl/articles/244141.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
fuel system
F-34 fuel
ester
Opis:: Problems of the power supply in military vehicles grow with the growing number of vehicles in armies. Moreover, biocomponents additions which are added to the basic fuels change its properties. Therefore undertaking work to adopt engines to supply them with fuels coming from renewable sources is essential. The purpose of that research is indicating the influence of fuel feeding system on useful parameters and composition of exhaust exhaust gases of self-igniting engine Renault G9T with high pressure injection mechanism „Common Rail. The researches were conducted while the engine was supplied with six kind of the fuel: basic fuel which was diesel oil, aviation fuel coded NATO F-34, fuel mixtures: F-34 methyl esters of higher fatty acids from rapeseed oil. In the result, it can be stated that the achievements of the engine Renault G9T with high pressure injection system feed with F-34 fuel and mixtures have hanged partly. Conducted examination has showed the essential influence between the fuel and performance of Renault G7T engine with high-pressure injection system feed with F-34 fuel mixtures with methyl esters of higher fatty acids. The increase of EMKOR share in F-34 fuel caused the decrease of useful power, increase of fuel consumption and decrease of combustion smoke.
Źródło:: Journal of KONES; 2009, 16, 1; 245-253
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Introductory investigation of diesel engine G9T supplied fuel F-34 and biofuel
Wstępne wyniki badań silnika G9T zasilanego paliwem F-34 oraz jego mieszanina z biokomponentem
Autorzy:: Karczewski, M.
Walentynowicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/247873.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: silnik spalinowy
układ zasilania
paliwo F-34
estry
combustion engine
fuel system
F-34 fuel
ester
Opis:: The problems of power supply the engines of military vehicles are growing together with the number of vehicles in armies. Application of additions biokomponents which change the proprieties of basic fuels is the next problem of fuelling present combustion engines. That is necessary undertaking the operations of enabling to adapting engines to supplying fuels from renewable sources. The assessment of the influence of kind of fuel supplied diesel engine Renault G9T on its useful parameters and exhaust gas composition was the aim of investigations. The investigations were made while the engine was feeding three kinds of the fuel: diesel fuel as a basic fuel, single fuel the NATO code F-34, the mixture of fuels: F-34 (80% the mass part) and the methyl esters of higher acids rape oil of the rapeseed (20% the mass part) means B20. As the result of made investigations was state, that the parameters of engine Renault G9T with the high pressure injection system supplying the fuel F-34 and B20 were partly changed in the relation to the basic fuel what there was the diesel oil. The parts of Carbon Monoxide, Hydrocarbons and exhaust gas are decreasing and engine torque is slight higher. In maximal torque and high engine speed - above 2500rpm during supplying engine fuel F-34 and its mixture, engine switched off automatically and for explanation this phenomena is necessary to explanation this phenomena.
Problemy zasilania silników pojazdów wojskowych narasta wraz ze wzrostem liczby pojazdów w armiach. Równocześnie kolejnym problemem przy zasilaniu współczesnych silników spalinowych jest stosowanie dodatków biokomponentów, które zmieniają właściwości paliw podstawowych. Dlatego też konieczne jest podejmowanie działań prowadzących do przystosowywania silników do zasilania paliwami pochodzącymi ze źródeł odnawialnych. Celem badań było określenie wpływu paliwa zasilającego silnik na parametry użyteczne i skład spalin silnika o zapłonie samoczynnym Renault G9T. Badania przeprowadzono podczas zasilania silnika trzema rodzajami paliwa: paliwem podstawowym jakim był olej napędowy, paliwem lotniczym o kodzie NATO F-34, mieszaniną paliw: F-34 (80% masowego udziału) i estrów metylowych wyższych kwasów tłuszczowych oleju rzepakowego (20% masowego udziału). W wyniku przeprowadzonych badań stwierdzono, że parametry silnika Renault G9T z wysokociśnieniowym układem wtrysku zasilanego paliwem F-34 i B20 uległy częściowo zmianie w stosunku do podstawowego paliwa jakim był olej napędowy. Celowe jest prowadzenie dalszych badań nad zastosowaniem paliwa F-34 oraz F-34 z udziałem EMKOR, gdyż jak pokazują otrzymane wyniki właściwości takiej mieszaniny zmieniają się korzystnie. Przy maksymalnych obciążeniach, dla wysokich prędkości obrotowych - powyżej 2500 obr/min przy zasilaniu silnika paliwem F-34 i jego mieszanką silnik samoczynnie się wyłączał Prawdopodobnie gaśnięcie silnika spowodowane było trudnościami w utrzymaniu odpowiedniego ciśnienia na zasobniku paliwowa. Celowe jest prowadzenie dalszych badań celem wyjaśnienia tego zjawiska.
Źródło:: Journal of KONES; 2007, 14, 3; 279-286
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Assessment of start-up characteristics of G9T engine at low temperature, FED with F-34 fuel blends with biocomponents
Autorzy:: Karczewski, M.
Pszczółkowski, J.
Wilk, M.
Powiązania:: https://bibliotekanauki.pl/articles/244594.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
fuel system
F-34 fuel
ester
code NATO
Renault G9T
Opis:: The main aim of the study was to experimentally determine the influence of low temperature on start-up and performance of an engine with high pressure fuel system; Common Rail system was used as the example here. The study included measurements of useful parameters of combustion and composition of exhaust gas, and determination of the influence of the fuel used on catalytic converter's performance. The studied engine was Renault G9T engine, fed with the following fuels: fuel base (diesel oil), aviation fuel, code NATO F-34, fuel blends of F-34 and rapeseed methyl esters of higher fatty acids, fuel blends of F-34 and anhydrous ethyl alcohol. The study showed that the parameters of Renault G9T engine with high pressure injection system fed with fuel blends of F-34 with biocomponents changed in comparison to those obtained with the use of the fuel base: diesel oil. The process of engine's ignition relies mainly on the proper functioning of engine starting system, fuel system and devices assisting the start-up.
Źródło:: Journal of KONES; 2011, 18, 1; 227-236
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Application of reverse engineering for identification of damage and support the reparation of the vehicles
Autorzy:: Karczewski, M.
Walentynowicz, J.
Polak, F.
Powiązania:: https://bibliotekanauki.pl/articles/245789.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: motor vehicle
reverse engineering
photogrammetry
3D scanner
Opis:: The methodology of the vehicle damage identification was presented in this article. Presented method used reverse engineering methodology for compare the shape of new vehicle, including CAD models of vehicle, and change of vehicle shape after damage. The method is based on three-dimensional scanning technology and photogrammetry. Identification of the defect is divided into two areas: the accurate reproduction of the vehicle surface damage and measure only changes of the base point’s position. In a first method, scanning large areas of vehicle requires connection of the consecutive scanning images of the surface to an object stuck in a random reference points. They form a grid of completing successive scanning images with very high accuracy of the surface point’s position. Measuring the angle and length between reference points, scanned surface is measured and digitized by software. However, do not always have to make as accurate measurements. In the second method there is measured only position of the vehicle base points. They may be dispersed very rare so if a damage is very small position of base points does not change. Sometimes it is reasonable to use the first and the second method together. For this purpose, the photogrammetric system is used in the first stage of the scanning surface. The vehicle specific places that are so-called base points are equipped with appropriate measuring adapters. Taking pictures of the object from these points programmatically determine the distance between reference points. This paper presents a method of surface scanning and processing on digital image scans of the vehicle for the calculation of standard deviations between the surface and the reference points. Presented adapters are used for measurement of base point’s position. Examples of calculations results of base point’s location in multi-wheeled AMV vehicle are described and illustrated in the paper.
Źródło:: Journal of KONES; 2013, 20, 4; 155-161
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

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: 10.

Tytuł:: Optical analysis of failure of combustion engines elements
Autorzy:: Karczewski, M.
Koliński, K.
Walentynowicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/244604.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engines
3D scanning
piston failure
triangulation principle
poligonization
Opis:: Methodology of analysis of damages of piston combustion engines by using 3D scanner enabling threedimensional analysis of such damages was introduced in the study. The principle of the device operation and his investigative possibilities were introduced. Presented is a phased process of scanning. The possibilities of the method were analyzed on examples of the damaged pistons for this engine supplied by fuel with low octane number. Precision of the damage measurements were estimated. The piston is one of the busiest part of the engine. The effects of wear on its surface are irregular and difficult to quantify. Geometric shape changes are related to: - movement of material in the case of dry friction due to accidents, - loss of material due to burnout, - formation of carbon deposits. With the 3D scanner is possible to observe these processes and to quantify the resulting deformation. The measurement results can be edited in many different ways to connect them to present them in an accessible form. Moreover, data obtained in digital form, you can quickly send long-distance transport instead of the actual object which is costly and time consuming.
Źródło:: Journal of KONES; 2011, 18, 1; 237-242
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Evaluation of the technical condition of the powerpack for AMV Rosomak on the dynamometer test stand
Autorzy:: Karczewski, M.
Szczęch, L.
Walentynowicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/245173.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
diagnostics
powerpack
Opis:: The paper describes standard methods of diagnosing of the AMV (the Rosomak) drive unit technical condition used in daily operation in military missions in Afghanistan. Main rule of the method of diagnosing of the vehicle technical condition is using an external diagnosing system. This system is connected to the vehicle at the time of checking of operation of the powertrain control system configuration of the drive unit to permit the diagnosis, including examination of the engine and gearbox. Enhanced diagnostic system is connected to the OBD system with using standard PC computer with appropriate software. Stored examples of the results of the operation of such system are included in the paper. Measuring was led on a dynamometer stand to perform research of a propulsion unit in work condition. Measurements of the engine parameters were led in steady state and transient engine operating conditions. Unsteady-state condition studies were carried out using the method of free-range acceleration of the engine. Pointed out the merits of the development of this type of study due to the perceived potential and usefulness of the results obtained. The results of studies carried out by various methods and assess the current condition of the engine and the entire powertrain were compared.
Źródło:: Journal of KONES; 2013, 20, 3; 221-228
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Energetic balance of unmanned ground vehicle hybrid power transmission
Autorzy:: Karczewski, M.
Szczęch, L.
Polak, F.
Powiązania:: https://bibliotekanauki.pl/articles/242808.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: balance
unmanned vehicle
hybrid transmission
test stand
Opis:: Article presents the energetic balance of small-unmanned vehicle hybrid power transmission. The vehicle equipped with series hybrid transmission consisted of electric engines connected to the battery pack and small Diesel power generator. In mentioned construction, battery is used as energy buffer and combustion engine is used more as emergency power supply, and is turned on when battery is depleted. In other condition, power generator can be turned off, without reducing power of transmission parameters, except its range. Investigation was divided on two stages. At first stage generator, charging unit and battery were placed outside the vehicle. One piston power generator was feed by Diesel fuel. Fuel consumption of power generator was recorded from AVL fuel balance and energy parameters were recorded by power line analyser of BMR Company. Generator was connected to the direct current power plant. 70 Ah and 48 DC Lithium-polymer battery was charged from the power plant. After charging cycle, small water resistor was used to discharge the battery. Power parameters of discharged battery were measured. This enable to measure balance form tank to the battery. Second stage of the energetic balance determination was to measure internal resistances of vehicle power transmission from current inverter/converter connected to the engine and through the transmission up to the wheels of the vehicle. Power loss of energy at different speed of vehicle wheels without ground contact was measured in respect of power consumption. The series hybrid transmission is consider less efficient than parallel but because of specific configuration of power transmission, it was possible to reach higher efficiency
Źródło:: Journal of KONES; 2018, 25, 2; 177-184
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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