Temat: SPARK - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The study on the effects of different opening ranges of waste-gate on improving the work parameters of spark ignition engine
Autorzy:: Filipczyk, J.
Powiązania:: https://bibliotekanauki.pl/articles/243943.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: spark ignition engine
turbocharger
Opis:: The experimental study was conducted to investigate the effects of different opening ranges of waste gate of a turbocharged medium displacement spark ignition engine on improving work parameters such as exhaust emission, torque characteristics and fuel consumption. The object of the experimental tests was an engine with modified intake and exhaust manifolds. The intake and exhaust manifold modification included only implementation of turbocharger with the variable geometry turbine. The values of boost pressure were controlled by the system with waste gate valves with a changeable characteristic and a control valve. Work parameters of waste-gate valves have been selected experimentally. Boost pressure had to be reduced to 1.3 and to 1.5 bar in the range of medium values of throttle opening. The system with waste-gate allowed to increase significantly the torque value at low engine speed range as well as to reduce the boost pressure at high engine speed range for throttle opening values above 50%. In total range engine work, emission of particular exhaust gas components did not exceed the values of the emission suitable for normally aspirated engine. It provided the stable engine 's running in all conditions including variable engine speed and in the whole range of throttle opening angle with restricted fuel consumption. The application of changeable characteristics in the waste gate valve which reduces the charging pressure by controlling characteristics variable of the valve depending on the engine work parameters was controlled by electronic system. The controlled system allows improving parameters of engine performance in wide range of engine's rotation speed.
Źródło:: Journal of KONES; 2010, 17, 3; 93-98
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: CFD tests of the exhaust system of a sports motorcycle
Autorzy:: Tkaczyk, M.
Powiązania:: https://bibliotekanauki.pl/articles/247314.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: CFD
speedway
spark ignition engine
Opis:: The content of this article describes the area of the operation of speedway racing motorcycles, it reflects the specific use, and thus, the special requirements placed on the internal combustion engines used there. Then, a research tool is presented in the form of Computational Fluid Dynamics methods. The article presents basic equations as a base for software, and emphasizes the essence and necessity of adequate selection of turbulence models. Presentation of the work tool is crowned with a brief description of the application in the form of Ansys numerical analysis software and a specific place and possibilities of its application. The practical part describes the work carried out during the tests of a GM 500 type combustion engine and attempts to compare two types of exhaust systems whose advantages and disadvantages in analytical calculations are difficult to determine, whereas CFD tests accurately represent pressure fields, velocities and the most important parameter in the form of resistance of the exhaust system. The article is crowned with the results of tests enabling determination and selection of the exhaust system with lower flow resistance and recommendations adjusting the exhaust system to a specific engine.
Źródło:: Journal of KONES; 2018, 25, 4; 429-436
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Charging system of spark ignition engine with two turbochargers
Autorzy:: Sendyka, B.
Filipczyk, J.
Powiązania:: https://bibliotekanauki.pl/articles/243862.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: spark ignition engine
charging system
turbocharger
Opis:: The purpose of the investigation was the application of two turbochargers system in spark ignition engine and determining turbochargers' work parameters depending on throttle opening and engine's rotation speed. System with small turbocharger and larger variable geometry turbocharger in parallel connection (three-stage turbocharging) was examined. The engine used during the investigation was 1300 cm displacement SI engine with modified intake and exhaust manifolds. Intake and exhaust manifold modification including only implementation of turbochargers and sensors was done for experimental purposes. Specific values of maximum boost pressure were obtained by introducing a waste gate valve system with appropriate characteristic. Proper choice concerning work parameters of the charging system allows to improve torque characteristic in wide range of engine's rotation speed. The system with additional small turbocharger allowed to increase torque value in low engine's speed range as well as to increase boost pressure in high engine's speed range for throttle opening angle values above 50 %. In medium engine's speed range the best results were given by variable geometry turbocharger. The two turbochargers system and values of maximum boost pressure were controlled by the system with two waste gate valves. Improving total efficiency was obtained in medium engine's speed range. The application of two turbochargers system as modification of naturally aspirated spark ignition engine allows to improve torque flexibility rate. There is a possibility to apply the charging system with two turbochargers, with boost pressure control system, in already existing, naturally aspirated engine without decreasing compression ratio and modifying engine's control system.
Źródło:: Journal of KONES; 2008, 15, 2; 433-440
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Computational domain discretization and its impact on flow field around the spark plug in SI engine
Dyskretyzacja domeny obliczeniowej i jej wplyw na pole przeplywu wokol swiecy zaplonowej w silniku niskopreznym
Autorzy:: Sosnowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/792239.pdf
Data publikacji:: 2011
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: spark ignition engine
numerical modelling
mesh type
computational domain discretization
computational fluid dynamics
spark plug
combustion chamber
work cycle
Źródło:: Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11C
1641-7739
Pojawia się w:: Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Effect of fuel film deposition on combustion process in PFI SI engine
Autorzy:: Merola, S. S.
Sementa, P.
Tornatore, C.
Vaglieco, B. M.
Powiązania:: https://bibliotekanauki.pl/articles/246434.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Overboosting
spark ignition engine
optical diagnostics
fuel film deposition
Opis:: The present paper discusses the experimental investigations on the flame induced by fuel film deposition ignition in a single cylinder, ported fuel injection, four-stroke, over-boosted spark-ignition engine with a four-valve production head. The engine was optically accessible and equipped with a transparent quartz window in the bottom of the combustion chamber. 2D-digital imaging and UV-visible natural emission spectroscopy were used to follow the flame propagation in the combustion chamber. Two colour pyrometers were applied to evaluate flame temperature and soot concentration. Particulate matter and soot primary particles diameters were measured and correlated with the soot amount produced in the combustion chamber. The effect of the intake air pressure and injection phasing was investigated. Optical setup for spectroscopic measurements and visible digital imaging, visible flame emission detected in the chamber for the selected operating conditions, visible emission spectra measured at 60 CAD ASOS in the chamber, soot concentration measured at the selected operating conditions, integral soot concentration measured at the selected operating conditions, particulate mass concentration measured by the Opacimeter and particles number concentration measured by LII at the engine exhaust are presented in the paper.
Źródło:: Journal of KONES; 2007, 14, 3; 395-402
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Exhaust emissions of dual fuel spark ignition engine fuelled gasoline and methanol
Autorzy:: Stelmasiak, Z.
Semikow, J.
Powiązania:: https://bibliotekanauki.pl/articles/247184.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: methanol
gasoline
spark ignition engine
dual fuel
exhaust emissions
Opis:: Today, more and more attention is paid to search for alternative fuels, which would be not only environmentally friendly, but also cost-competitive to petroleum fuels. In the recent years much attention is paid to investigations at adaptation of combustion engine to run on bio-fuels. Results of the investigations show, that methyl and ethyl alcohols could belong to one from the most promising and future bio-fuels, being a serious alternative to petroleum fuels. Interest in these fuels comprises such areas as exploration of raw materials to production of the alcohols, development of technology of their production, especially 2nd generation of ethyl alcohol, special fuelling and control systems, design changes of the engines fuelled with alcohols. In the present paper are shown test results of Fiat 1.3 Multipoint engine fuelled in dual fuel system with methanol and gasoline. In this engine one assembled prototype fuel supply system with duplex injectors on each cylinder, to injection of methanol and gasoline. Implemented system enables fuelling with gasoline only, with methanol only, or simultaneously with gasoline and methanol with any fraction of the methanol. Change of fuelling system and change of methanol fraction can be accomplished in course of engine operation. Performed investigations showed advantageous effect of the methanol on toxicity of exhaust gases. One confirmed reduction of emissions of hydrocarbons, nitrogen oxide and carbon dioxide. The biggest changes in the concentration occurred in case of fuelling with the methanol only, and amounted to: 2-3 times reduction of the THC, reduction of NOx with 40-60%. Differences in concentration of NOx increased together with growth of engine load, and hence, they concern such areas of engine operation, where the biggest quantities of the NOx are emitted. In case of dual fuel feeding, effect of reduction of concentration of the components discussed here decreases according to reduced fraction of the methanol. Changes in the emissions discussed here are obtained with maintained engine performance and growth of overall efficiency of the engine. Implemented system eliminates problems of stratification of methanol-gasoline mixture in low temperatures and in presence of water. The system can be adapted to any liquid fuels.
Źródło:: Journal of KONES; 2013, 20, 2; 363-370
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Experimental investigation of leakage current influence on automotive spark plug voltage waveform
Doświadczalne badanie wpływu prądu upływu na przebieg napięcia świecy zapłonowej
Autorzy:: Fryśkowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/328264.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:: ignition system
spark plug
spark ignition engine
vacuum tube
car diagnostics
układ zapłonowy
świeca zapłonowa
silnik o zapłonie iskrowym
lampa elektronowa
diagnostyka samochodowa
Opis:: The misfire effect in an automotive ignition circuits is caused by parasitic spark plug shunt resistance resulting in leakage current flow. The main explanation for leakage current flow through a spark plug insulator is insulator surface contamination or dielectric failure. Practical measurements show that the spark plug waveforms analysis could be used for diagnostic purposes to recognize the presence of shunt resistance in secondary ignition circuit. A novel method of leakage current simulation and a prototype of an adjustable ignition coil electric load able to operate at high – voltage were proposed. Energy dissipated by adjustable electric load, spark plug voltage and leakage current measurement results were presented. A change in the shape of spark plug voltage and current waveforms caused by leakage current was analyzed and discussed.
Zjawisko wypadania zapłonu w samochodowych układach zapłonowych wywołane jest obecnością niepożądanej rezystancji bocznikującej, która wywołuje przepływ prądu upływu. Głównym powodem obecności prądu upływu izolatora jest zanieczyszczenie jego powierzchni lub degradacja właściwości izolacyjnych dielektryka. Wyniki pomiarów wykonywanych w praktyce dowodzą, że analiza przebiegu napięcia na świecy zapłonowej może być wykorzystana na potrzeby identyfikacji obecności rezystancji bocznikującej w obwodzie wtórnym cewki zapłonowej. W pracy zaproponowano nową metodę symulacji przepływu prądu upływu oraz prototyp regulowanego obciążenia obwodu wtórnego cewki zapłonowej mogącego funkcjonować w warunkach wysokiego napięcia. Przedstawiono wyniki pomiarów energii rozproszonej dzięki regulowanemu obciążeniu, napięcia na świecy zapłonowej oraz natężenia prądu upływu. Dokonano analizy wpływu obecności prądu upływu na kształt wykresów napięcia i prądu świecy zapłonowej.
Źródło:: Diagnostyka; 2015, 16, 4; 3-8
1641-6414
2449-5220
Pojawia się w:: Diagnostyka
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Ehksperimentalnoe issledovanie osobennostejj raboty iskrovogo DVS s sistemojj termokhimicheskojj parovojj konversii bioehtanola
Experimental research of work spark ice with bioethanol steam thermochemical conversion
Autorzy:: Timoshevsky, B.
Tkach, M.
Mitrofanov, A.
Poznansky, A.
Proskurin, A.
Powiązania:: https://bibliotekanauki.pl/articles/78226.pdf
Data publikacji:: 2013
Wydawca:: Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:: bioethanol
steam conversion
spark ignition engine
energy index
reactor
experimental research
Opis:: It is described a construction and an operating principle of the experimental plant for spark engine operation study with system of bioethanol steam thermochemical conversion. The main energy indicators of thermochemical reactor and the properties of the synthesis gas with a different composition, flow of the mixture and the reactor power are received.
Źródło:: Motrol. Motoryzacja i Energetyka Rolnictwa; 2013, 15, 2
1730-8658
Pojawia się w:: Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

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: 10.

Tytuł:: Comparison of combustion of gasoline and methanol in the si engine dual fuelled
Autorzy:: Stelmasiak, Zdzisław
Powiązania:: https://bibliotekanauki.pl/articles/242301.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: methyl alcohol
gasoline
spark ignition engine
combustion parameters
thermal efficiency
dual fuelling
Opis:: In the paper are presented comparative tests of combustion of gasoline and combustion of methanol in spark ignition engine of the Fiat 1100 MPI type. The engine was equipped with a prototype suction manifold with duplex injectors on each cylinder. Implemented system enabled dual fuel operation of the engine with any fraction of the alcohol. Engine performance and start-up capabilities were the same like in case of the operation on gasoline only. Type and parameters of the fuel supply can be changed in any time during operation of the engine. The study dealt with comparison of a selected parameters used to assessment of combustion of the fuels: pressure of the working medium p, rate of pressure rise dp/d, heat release rate dQ/d, temperature of the working medium, and combustion angle. The investigations pointed at considerable differences in run of combustion of the gasoline and combustion of the methanol, as autonomous fuels. Moreover, addition of methanol to gasoline results in considerable differences in combustion process, comparing to combustion of gasoline mixtures. The combustion goes on more dynamically, especially during initial phase of the process, while total time of the combustion is shorter. Effects of these changes are: higher maximal pressures, faster rates of pressure growth and heat release. Extent of change of combustion parameters depends on methanol fraction in total dose of the fuel supplied to the engine. Addition of the methanol effects in growth of general efficiency of the engine, which increases together with growth of methanol fraction and engine load. Absolute growth of the efficiency amounted to 2-5%, while relative growth amounted to 6-16%. Such significant growth of the efficiency should lead to reduction of energy consumption during engine operation.
Źródło:: Journal of KONES; 2013, 20, 1; 317-328
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Paliwowe komponenty depolimerowe do silnika o ZI
Fuel depolymerization components for the spark ignition engine
Autorzy:: Swat, M.
Powiązania:: https://bibliotekanauki.pl/articles/257663.pdf
Data publikacji:: 2009
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:: paliwo silnikowe
silnik o ZI
ekologia
engine fuel
spark ignition engine
ecology
Opis:: Przedstawiono wyniki własnych badań silnikowych nad zastosowaniem komponentów depolimerowych jako paliwa do silnika o ZI. W wyniku przeprowadzonych badań stwierdzono, że ze względów eksploatacyjnych najlepszym komponentem paliwowym jest dodatek 10% benzyny X i 20% benzyny Y z DTS (depolimeryzacji tworzyw sztucznych). Stwierdzono, że 20% dodatek benzyn X i Y z DTS jest wielkością graniczną, powyżej której efekty w ograniczaniu emisji CO i HC nie rekompensują wzrostu emisji NOx i wyraźnego pogorszenia parametrów eksploatacyjnych pracy silnika.
Research results of the application of depolymerization components as a fuel to the spark ignition engine are presented. The research determined that the best fuel components for the operational conditions are the 10% gasoline X additive and the 20% gasoline Y additive with PD (Plastics Depolymerization). The 20% value gasoline X and Y additives with PD is the limiting value. Below this value, the effects in reducing CO and HC did not compensate for the increase NOx emissions and there was a clear deterioration in the operational performance of the engine.
Źródło:: Problemy Eksploatacji; 2009, 3; 151-162
1232-9312
Pojawia się w:: Problemy Eksploatacji
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Optical diagnostics in a spark ignition engine for two-wheel vehicles
Autorzy:: Merola, S. S.
Sementa, P.
Tornatore, C.
Powiązania:: https://bibliotekanauki.pl/articles/247811.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: spark ignition engine
gasoline
2-wheel vehicle
optical diagnostics
digital imaging
spectroscopy
Opis:: Different optical techniques were applied to describe the thermal and chemical processes that occur in a SI small engine from the ported fuel injection and in-cylinder mixture formation to the combustion process and the exhaust emission. In PFI SI engines, the atomized fuel is sprayed towards the intake valves, where it may evaporate, puddle or rebound. Furthermore, a portion of the fuel may flow directly into the cylinder or impinge upon the port walls. These phenomena occur in varying degrees and depend upon the engine design, injector location and engine operation. Potentially the fuel can enter the cylinder in a poorly atomized state, leading to an increased unburned hydrocarbon emissions. This is particularly true during cold operation, when evaporation is low. In the small-motorcycle and scooter engines the fuel injection occurs in smaller intake manifold than light-duty vehicle engines, increasing the criticism of the fuel-wall interaction. The experimental investigations were performed in a single cylinder engine constituted by an elongated optically accessible piston and equipped with the head and injection system of a reference 4-stroke engine for small vehicles. High spatial resolution imaging was used to characterize the fuel injection phase. The cycle resolved visualization was performed to follow the flame propagation from the intake spark ignition to the exhaust phase. Natural emission spectroscopy measurements were applied in the ultraviolet-visible wavelength range to identify the chemical species that are markers of the combustion process and to follow the formation of pollutants.
Źródło:: Journal of KONES; 2010, 17, 4; 323-336
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Real-time implementation of multiple model based predictive control strategy to air/fuel ratio of a gasoline engine
Autorzy:: Wojnar, S
Polóni, T
Šimončič, P
Rohal’-Ilkiv, B
Honek, M
Csambál, J
Powiązania:: https://bibliotekanauki.pl/articles/229632.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: model predictive control
multiple models
air/fuel ratio
spark ignition engine
ARX models
Opis:: Growing safety, pollution and comfort requirements influence automotive industry ever more. The use of three-way catalysts in exhaust aftertreatment systems of combustion engines is essential in reducing engine emissions to levels demanded by environmental legislation. However, the key to the optimal catalytic conversion level is to keep the engine air/fuel ratio (AFR) at a desired level. Thus, for this purposes more and more sophisticated AFR control algorithms are intensively investigated and tested in the literature. The goal of this paper is to present for a case of a gasoline engine the model predictive AFR controller based on the multiple-model approach to the engine modeling. The idea is to identify the engine in particular working points and then to create a global engine's model using Sugeno fuzzy logic. Opposite to traditional control approaches which lose their quality beside steady state, it enables to work with satisfactory quality mainly in transient regimes. Presented results of the multiple-model predictive air/fuel ratio control are acquired from the first experimental real-time implementation on the VW Polo 1390 cm3 gasoline engine, at which the original electronic control unit (ECU) has been fully replaced by a dSpace prototyping system which execute the predictive controller. Required control performance has been proven and is presented in the paper.
Źródło:: Archives of Control Sciences; 2013, 23, 1; 93-106
1230-2384
Pojawia się w:: Archives of Control Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Ocena wpływu uszkodzenia turbosprężarki na wybrane parametry pracy silnika o ZI
Assessment of the impact turbocharger damage on selected parameters of the spark ignition engine
Autorzy:: Bieliński, M.
Borowczyk, T.
Karpiuk, W.
Idzior, M.
Powiązania:: https://bibliotekanauki.pl/articles/134025.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: turbosprężarka
turbodoładowanie
uszkodzenie
silnik o zapłonie iskrowym
turbocharger
operation
durability
damage
spark ignition engine
Opis:: W artykule omówiono zagadnienia wpływu uszkodzenia żeliwnego korpusu turbiny na parametry związane z pracą silnika współpracującego z niesprawnym podzespołem. Zbadano wpływ nieszczelności pękniętego elementu na ciśnienie powietrza doładowującego, prędkość obrotową wału turbosprężarki oraz zużycie paliwa w wybranych zakresach pracy. Podczas prób rejestrowano zarówno parametry pracy silnika tj. prędkość obrotową wału korbowego, zużycie paliwa, czasy otwarcia wtryskiwaczy, ciśnienia, temperatury czynników jak i parametry pracy turbosprężarki oraz samego pojazdu. Badania powtórzono dla turbosprężarki zregenerowanej. Przeprowadzono testy trzech turbosprężarek na pojeździe z silnikiem o zapłonie iskrowym w rzeczywistych warunkach drogowych. Wybór typu turbosprężarki (firmy KKK typ K03-011A) był podyktowany analizą przeprowadzoną przy współpracy z zakładem zajmującym się regeneracją układów doładowania. Podczas praktyk warsztatowych zaobserwowano szereg uszkodzeń o tym samym charakterze związanych ze zwiększonym naprężeniem termicznym prowadzącym do uszkodzenia korpusu. Istotny jest fakt, iż turbosprężarki tego typu trafiły do regeneracji z powodu innej awarii, zatem do czasu naprawy były eksploatowane z wymienionym wyżej uszkodzeniem. Wybrane wyniki badań oraz analizę przedstawiono w niniejszym artykule.
The article discusses the issues related to the influence of a damaged turbine cast-iron body on the operation of the motor which is works together with this defective component. The analysis focuses on the effects that the ruptured component had on charging air pressure, the rotational speed of the turbocharger shaft and fuel consumption for the selected rotation ranges. The trials included parameters of the engine performance, i.e. rotational speed of the crankshaft, fuel consumption, injector opening time, pressure, temperature etc., as well as parameters of the turbocharger and a vehicle itself. The measurements were repeated with the regenerated turbocharger. Both set of tests were conducted under real road conditions using vehicle with spark-ignition engines. Selection of the turbocharger model (KKK model no K03-011A) was determined by the analysis carried out in cooperation with the workshop that rebuilt the turbochargers. A number of defects were observed during the test runs. These defects were typically thermal stress related and led to deterioration of the body. The significant observation was that the turbochargers of this type were sent for repairs due to other malfunctions, thus before rebuilding they were utilized with the these malfunctions. This article presents selected research results and analysis.
Źródło:: Combustion Engines; 2015, 54, 3; 205-211
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Simulation model of combustion engine with direct injection of hydrogen
Autorzy:: Blažek, J.
Brabec, P.
Powiązania:: https://bibliotekanauki.pl/articles/242159.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Simulation model of combustion engine
direct hydrogen injection
Ricardo Wave
combustion process
spark ignition engine
Opis:: Fuel mixture formation inside a cylinder has become used more frequently in spark ignition engines in recent years. gas internal combustion engines can also benefit from this concept as direct injection into an engine 's cylinder during the compression stroke not only increases its volumetric efficiency but also eliminates adverse anomalies in the combustion process. This paper focuses on the development of a simulation model for a spark ignition engine with direct hydrogen injection into a cylinder. The Wave software was used for the simulation. A part of the paper depicts the model's verification. The study utilized a three-cylinder internal combustion engine with the total cylinder volume of 1.2 dm3. The concept of the engine is based on new, high-pressure injectors with 10 MPa inlet pressure (gas-hydrogen injection directly into the engine cylinder). Utilization of internal fuel mixture formation can be beneficial due to its enabling the control of the combustion process and gaseous emission generation. From the viewpoint of the engine's design, however, internal fuel mixture utilisation is more complicated as injectors have to be built into the cylinder head. The actual engine construction is housed in laboratories of the Technical University of Liberec, Department of Vehicles and Engines.
Źródło:: Journal of KONES; 2009, 16, 3; 15-21
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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