Temat: ENGINES - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Simulation of the combustion process in the electronically controlled marine diesel engine
Autorzy:: Kluj, S.
Powiązania:: https://bibliotekanauki.pl/articles/243056.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine diesel engines
simulation
combustion engines
electronically controlled engines
Opis:: The introduction of the electronically controlled low-speed diesel engines has raised a number of new problems - caused mainly by the influence of these electronic system settings on the combustion process. The wide set of the combustion press settings is now available for the chief engineers on the board of the ship and for the shipyard experts during the sea trials. This opens many new possibilities for the combustion process optimization but also causes the danger of the serious engine malfunction due to the improper settings. The paper presents the mathematical model of the electronically controlled low-speed marine diesel engine ant the special attention is paid to the available settings of the combustion process. The effective compression ratio, the injection timing and the exhaust valve setting can be adjusted in a similar manner like in the actual engine. The combustion pressure curves, the mean indicated pressure, the exhaust gas temperature can be observed when changing the combustion settings. The paper describes in detail the results of the several most typical simulations like change of the given combustion pressure increase, the change of the effective compression ratio, the change of the exhaust valve opening timing and the change of the maximum load setting.
Źródło:: Journal of KONES; 2014, 21, 4; 233-238
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Geometry of the Wankel rotary engine
Autorzy:: Drogosz, P.
Powiązania:: https://bibliotekanauki.pl/articles/243941.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: hydrogen engines
internal combustion engines
Wankel rotary engines
trochoids
Opis:: This article describes the basic principles for determining the geometry of Wankel rotary engines. An attempt is made to clarify if the characteristics of the rotary engine are such that the engine may be brought into more general use as an internal combustion hydrogen engine. An analysis of the data indicates that reorganizing the basic mathematical issues would be useful. Also the clarification of the names used to describe the basic curve characterizing the Wankel engine may be useful too. Now in such names and basic mathematical issues there are many differences generating many difficulties in comparison information comingfrom different sources. In this article one most convenient name and form of mathematical equation were chosen and described. The chosen name is the best for communication in the English language, but the other described names can be useful when comparing information from other European languages. This is the first time that the chosen form of mathematical equation is proposed to be used in accordance to construction of Wankel engines. Many other applications of the chosen form of mathematical equation ascertain proper and convenient use. The main advantages of this form of mathematical equation are applications of two main parameters: curve size parameter and dimensionless curve parameter. These two parameters decided about convenience in changing volume of internal combustion engines and comparisons of performance characteristic of different Wankel engines.
Źródło:: Journal of KONES; 2010, 17, 3; 69-74
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: BMD ecofuel for diesel engines
Autorzy:: Struś, M.
Sitnik, L.
Piętak, A.
Powiązania:: https://bibliotekanauki.pl/articles/243008.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ecofuels
biomixdiesel
BMD
engines
diesel engines
Opis:: The World is strongly dependent on crude oil for its transport needs. In order to diminish this dependence, we need to introduce clean, CO2-efficient, secure and affordable transportation fuels. The current production of liquid biofuels in the EU25 is less than 1% of the market. Recent assessments have concluded that the 2010 targets, 18 Mtoe used in the transport sector, are unlikely to be achieved. There can be three basic possibilities of accomplishing this target: i) use of alcohols (first of all ethanol) and their mixing with petrol; ii) use of fatty acids esters (methyl or ethyl) of vegetable oils and their mixing with diesel fuel, iii) use of synthetic hydrocarbons of the synthetic gas coming from biomass resources and eventually their mixing with other "classical" hydrocarbons. This paper presents a novel way of utilizing alcohols as fuels for a diesel engine. It is proposed to use heavy alcohols as a mix with vegetable oils and conventional diesel fuel. It is presented the way to use alcohols. Namely, the use of heavy alcohols as a solvent for vegetable oil (named the biomix or BM) and after the obtainment of the thickness, which would be approximate to diesel fuel, mixing the biomix with diesel fuel to obtained biomixdiesel (BMD). This solution will be shown for example with butanol as heavy alcohol, rape oil as vegetable oil and conventional diesel fuel. The investigations are carried out with a simple diesel engine on the engine test bed. Main parameters of engine (power output, torque, specifically fuel consumption) and the main exhaust gas component (in this case CO, NOx, PM) will be investigated. There were better results achieved than one expected. Opposed to existing experiences, the maximum of power output and the torque of engine are higher in the whole range of the rotational speed of the engine crankshaft when the engine biomixdiesel (BMD) is reinforced. The addition of the component biomix to fuel influences the specific fuel consumption. Generally, with the larger part of the component biomix the specific fuel consumption grows. Because the power of engine also grows up one should expect that in exploitation the specific fuel consumption should not increase. Very important is that this fuel could be used to reinforce old, existing now and the future diesel engines. The production of butanol is known (from biomass and in other way with electrolysis of ethanol). The possibility to get butanol from ethanol gives a very good perspective for the use of ethanol from today's overproduction and moreover without the essential change of infrastructure. All this leads to the conclusion that fulfilling of the expected requirements of European Union regarding the ecofuels is fully possible.
Źródło:: Journal of KONES; 2012, 19, 4; 589-599
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Analysis of thermodynamic cycle influence of turbofan mixer engine on its performance
Autorzy:: Jakubowski, R.
Powiązania:: https://bibliotekanauki.pl/articles/245722.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aircraft engines
turbojet engines
modelling of turbojet engines
turbojet engine characteristics
Opis:: The turbofan engines are widely used as propulsion of the contemporary airplanes. In the military application the turbofan mixer engines are used. Although the turbofan mixer engines are applied for a long time, the information about exact analysis of their thermodynamic cycle and performance are still in complete. The thermodynamic cycle of the turbofan mixer engine is presented and discussed in this paper. Based on it the cycle parameters selection is discussed. Then the optimization of turbofan mixer engine cycle is presented. Final results present the influence of chosen engine cycle parameters on the engine performance. The results are analyzed and discussed. On the basis of them the conclusions are formulated. It is not such an easy process to choose for the turbofan mixer engine thermodynamic parameters. It is connected with the fulfilment of two important rules. The equalization of total pressure of mixer inflow streamfor mixer efficient work is the first of it. The other rule is connected with engine cycle optimization. As it is shown it is not possible to choose engine parameters to reconcile the demands of specific thrust maximization and specific fuel consumption minimization. The engine thermodynamics parameters selection process is the search of the compromise between these two demand fulfilments, very often including engine mass analysis.
Źródło:: Journal of KONES; 2009, 16, 4; 171-178
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The environmental safety of the Fiat 0.9 TwinAir compressed natural gas engine
Autorzy:: Warianek, Michał G.
Lejda, Kazimierz
Powiązania:: https://bibliotekanauki.pl/articles/263728.pdf
Data publikacji:: 2020
Wydawca:: Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:: spark ignition engines
gas engines
CNG engine
load characteristics
emission of gas engines
Opis:: The article presents the results of measurements of concentrations of selected exhaust components of the Fiat 0.9 TwinAir spark ignition engine operating according to load characteristics. The tested engine has an indirect, multi-point petrol supply system and has been retrofitted with an indirect CNG injection system. The results of the tests are a comparison of selected economic, ecological and energetic indicators of engine operation obtained when fuelled with CNG and 95 octane petrol. The operation of the engine fuelled with gaseous fuel was preceded by autocalibration of the controller of the fuelling system. The article presents the results of tests of concentrations of harmful components of exhaust gases: carbon dioxide CO2 , carbon monoxide CO, nitrogen oxides NOx and HC hydrocarbons. Moreover, the values of lambda λ air excess coefficient are presented and fuel consumption is compared. The obtained results of the tests of the engine fuelled with CNG gas show a significant decrease in the value of the obtained torque in comparison to the engine torque when fuelled with petrol. The engine fuelled with compressed natural gas contributed to the improvement of its ecological properties and a reduction of fuel consumption, which are important factors of ecological and energy safety. Exhaust gas analysis showed a reduction in the concentration of harmful components of exhaust gases, mainly hydrocarbons and nitrogen oxides. A positive effect of the operation of the engine powered by CNG was also a significant reduction of carbon dioxide in the exhaust gases compared to the engine powered with gasoline.
Źródło:: Archiwum Motoryzacji; 2020, 88, 2; 47-60
1234-754X
2084-476X
Pojawia się w:: Archiwum Motoryzacji
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Vert particle filter test procedure and quality standard for new and in-use diesel engines
Autorzy:: Mayer, A.
Czerwinski, J.
Kasper, M.
Leutert, G.
Heeb, N. V.
Ulrich, A.
Jaussi, F.
Powiązania:: https://bibliotekanauki.pl/articles/247808.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: internal combustion engines
diesel engines
ecology
filters
particulates
Opis:: A new approach is needed to test particle filters for retrofitting Diesel engines. Considering the toxicity of the particles as also the physical and chemical attributes of particle filters, the optimal scheme is to test the components themselves independent of the deployment. That scheme ensures the highest effectiveness with least effort. It also enables evaluation of worst-case situations and assesses the hazards of secondary emissions. The Swiss standard SNR 277 205, which mandates the VERT test procedure, is a first step in that direction. The solution is derived from the physics of the filter media. The filtration of fine particles essentially depends on the particle size and the space velocity. The attributes of the emitting engine are only insignificantly relevant. Hence the physics and chemistry of particle filters can be investigated independent of the engine and its deployment duty. This concept facilitates a very thorough investigation of the size-dependent filtration, aging susceptibility, secondary emissions and extreme situations. Filter systems, which pass this detailed test, perform equally well in every retrofit configuration. This filter test concept was implemented 1998 in the VERT project and is successful for assessing retrofltting [4]. VERT approved fllter systems are already deployed in the Low Emission Zones of Europe, North and South America.
Źródło:: Journal of KONES; 2010, 17, 4; 313-322
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Investigation of the dynamic properties of engine fan titanium rotor blades in a high manoeuvrability aircraft in FOD aspect
Autorzy:: Szczepanik, R.
Powiązania:: https://bibliotekanauki.pl/articles/244435.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aircraft
combustion engines
turbine engines
engine diagnostic
blades
Opis:: A current problem concerning the use of military and civilian aircraft is the damage caused to turbine compressor blades by ‘foreign objects’. Here the term ‘foreign objects’ means small stones, pieces of metal, cement pitch, asphalt, etc., left on runways and taxiways. Foreign objects also include ice and iced lumps of snow as well as birds sucked into aircraft engine air ducts. All such objects pose a serious threat to proper engine operation. They are very harmful in two respects. One is the direct danger during flight when a bird or some other object is sucked into the engine. The other danger is in what might occur in later flights if the engine, especially the compressor and turbine blades, are not inspected for durability reassessment. This paper presents an analysis of how the size and distribution of defects on blade edges affect, the frequencies and fatigue strength of titanium blades in the first four stages of a high manoeuvrability jet engine fan (low pressure compressor). In particular, damaged high manoeuvrability aircraft fan stage rotor blades and measured natural vibration frequencies and logarithmic decrement of damping of high manoeuvrability aircraft fan titanium blades are presented in the paper.
Źródło:: Journal of KONES; 2013, 20, 2; 371-376
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Some problems with operation of engines fuelled with landfill biogas
Autorzy:: Ziółkowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/246187.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: power plants
internal combustion engines
gas engines
landfill biogas
Opis:: In the article has been described some problems associated with the production of biogas and using it as a fuel in internal combustion engines. In Poland biogas is mostly generated from deposits from sewage treatment plants, agricultural waste and from landfills. The biogas chemical composition depends on the organie matter as a source of biogas on used fermentation technology. One of the forms of biogas utilization is burning it in internal combustion engines. Engines producers offer a range of models designed to be fuelled with biogas. However there are some signiflcant problems with operation of such engines that appear in the case of using landfill biogas as a fuel. This kind of biogas is characterized by considerable variability in methane content, which dynamically changes throughout the period of landfill usage. In the article there is some information about the impact of changes in the methane content on operation of internal combustion engines fuelled with landfill biogas. Rapid increase in the methane content may be the purpose of knocking and engine damage. There also presented the analysis of control systems applied in gas engines. The analysis is made for purpose of determining the ability of described control systems to maintain with rapid changes in methane content in fuel gas. On the basis of this there are described some requests for features that should be characterized by the gas engine control system adapted to the combustion of landfill biogas. In summary are presented some guidance to facilitate the correct selection of engine fuelled with landfill biogas.
Źródło:: Journal of KONES; 2010, 17, 4; 615-622
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: The selection of stirling engines applied to cogeneration systems
Autorzy:: Drogosz, P.
Nitkiewicz, S.
Piętak, A.
Powiązania:: https://bibliotekanauki.pl/articles/247267.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engines
Stirling engines
heating power
cogeneration systems
hydrogen
Opis:: The cogeneration systems of energy production are built and developed to achieve the highest economic and ecologic efficiency. These two aims can be realized by increasing energetic efficiency of transforming different sources of energy into technical systems and optimizing usage of own energy. These can be achieved by the usage of different equipment. The search for new constructions, structure and systems is still developing. This article describes the basic principles for use of Stirling engines in micro immobility cogeneration systems. This attempt is made because the Stirling engines seem to be a convenient equipment of optimizing usage of own energy in micro agropower plants. Especially we try to determine which type of the Stirling engine seems to be the best to fulfil the demands in practice. For this purpose a procedure of selection and adjustment of Stirling engines was formulated. In the described procedure many steps ought to be taken for correct choice of all technical arrangements. In this paper the following topics were considered: energetic demands of small houses, maximum instantaneous electric power, consumption of electric energy throughout a year, maximum instantaneous heating power, consumption of heat energy of the year, selection and choice of construction of Stirling engines, selection and choice of pressure of working gas.
Źródło:: Journal of KONES; 2011, 18, 4; 85-90
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Interdependence of torsional vibration damper parameters on crankshafts torsional vibrations
Autorzy:: Mitianiec, W.
Buczek, K.
Powiązania:: https://bibliotekanauki.pl/articles/244893.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
combustion engines
HD engines
crank drive
torsional vibration
Opis:: Torsional vibration of crankshaft is a harmful phenomenon in every type of engine. It can easily cause a fatigue failure in engines with relatively long crankshafts and big bore diameters (usually above 90 mm). For these types of engines, the resonance caused by specific low order harmonic of gas force and inertia force of oscillating masses occurs in engine speed range, thus resonant torsional moment of big amplitude is generated. This moment, additionally acting on crankshaft, is harmful and can easily cause its fatigue failure. In order to reduce the resonance effects, the torsional vibration damper (TVD) has to be used. That is the reason why application of torsional vibration dampers is almost a rule in these types of engines. The viscose TVD is the most popular type of vibration damper in heavy duty diesel engine. Moment of inertia of its plunger is the main criterion of damper selection. It is the basic factor, which determines the amount of dissipation work, decreasing the additional torsional moment caused by resonance. Increasing plunger's moment of inertia induce the rise of dissipation work but simultaneously decrease natural frequencies of a crank train, what allows to resonate with low order harmonic of tangential force acting on crankpin. The paper concerns an analysis of influence of viscose TVD parameters on crankshaft's torsional vibration for six cylinder inline heavy duty diesel engine.
Źródło:: Journal of KONES; 2008, 15, 4; 351-358
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Failure’s identification of turbochargers of internal combustion engines by means of multi-functional test stand
Autorzy:: Idzior, M.
Karpiuk, W.
Bieliński, M.
Borowczyk, T.
Powiązania:: https://bibliotekanauki.pl/articles/247935.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engines
vehicles
transport
Opis:: A turbocharger is a relatively simple, but very precisely made component working in conditions, which should be considered hard. Due to hard working conditions, among others: high exhaust temperatures, very high rotational speeds reaching up to 250 000 rpm, precise design and difficult assembly, turbochargers should be considered particularly subject to damage and failure. It is confirmed by data showing an increasing number of failures of such components, which is caused, among others, by the increasing number of vehicles equipped with turbochargers. The considerable cost of a new turbocharger and its relatively easy disassembly coupled with easy access to spare parts in Poland result in establishing of ever more new companies remanufacturing this type of device. The effectiveness of repairs carried out in such plants varies strongly, often being of poor quality due to lack of knowledge, both practical and theoretical, inadequate training of personnel, and many other factors. A common problem, faced by the companies remanufacturing turbochargers, is the lack of tools allowing to reliably checking the selected parameters relevant for subsequent use of remanufactured components. In connection to that in article have been presented identification of common failures occur in turbochargers. Moreover, conception of multi-functional diagnostic test stand have been also presented. Such method will be an extremely useful tool for verifying the effectiveness of repairs, which will be important in terms of their subsequent use (confirmation, that the repair has been performed properly), environmental protection and in case of conflict between the customer and the company (certifying, that the repair has been performed properly). No equipment or other technological solution enabling to achieve aims described above in practice is produced in Poland or abroad.
Źródło:: Journal of KONES; 2013, 20, 3; 169-175
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: A method for preliminary optimisation of the selection of high speed sidp engines
Autorzy:: Gadomski, D.
Powiązania:: https://bibliotekanauki.pl/articles/1920335.pdf
Data publikacji:: 1998
Wydawca:: Instytut Morski w Gdańsku
Tematy:: preliminary optimisation
engines
Opis:: A method for preliminary optimisation of the selection of high speed ship engines is presented using the example of MAN engines which form a part of Diesel-electric units of DEMP A/S. After appropriate adaptation of the component functions of the objective function, i.e. of the cost of purchasing the engine and of the cost of consumed fuel, the presented method allows to make comparative calculations for other main engines and to take simultaneously into account a given structure of the propelling installation.
Źródło:: Biuletyn Instytutu Morskiego w Gdańsku; 1998, 25, 2; 33-53
1230-7424
2450-5536
Pojawia się w:: Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Comparison of characteristics of spark pług engines FSI, TSI/TFSI type of Volkswagen Company
Autorzy:: Miksiewicz, K.
Tkaczyk, M.
Rymarowicz, M.
Powiązania:: https://bibliotekanauki.pl/articles/247802.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
combustion engines
fuel injection
stratified injection
charge engines
Opis:: The use of direct injection in spark ignition engines significantly facilitated the use of chargers in these engines. This resulted lately in the significant popularization of direct injection engines, initially freely sucking and in final result turbocharged. The greatest popularity on the market gained engines of Volkswagen Company, named FSI and TFSI / TSI. Application of Common Rail systems allowed not only improving the characteristics of the engine by increasing the accuracy in dispensing fuel into individual cylinders. The most important gain is the possibility ofsecond injection of the fuel to the cylinder after the intake valve is closed. On the one hand it allows better control of the load in the cylinder, at first with the piston crown, and now with shaping the injection by the injector. On the other hand it allows creating a stratified mixture, at low load of the engine it reduces fuel consumption and work at high excess air ratios lambda Quickly it began to use the turbocharger in those engines due to the significant improvement in the operating characteristics of such engine. Profit from better filling of the combustion chamber can be used in different ways. On the one hand, you can replace engines naturally aspirated, with turbocharged with lower displacement, which leads to the improvement of the economics of such engine. On the other hand, after appropriate modifications to the design, you can add a charger to the naturally aspirated engine, retaining its capacity. Gains are then not only higher operating parameters, such as power and torque, but it also significantly improves the torque curve. It has big impact on the flexibility of the engine and the vehicle which is powered by it. Another gain is larger amount of work done by the engine.
Źródło:: Journal of KONES; 2010, 17, 4; 337-343
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Trajectory of the apex seals of the wankel rotary engine
Autorzy:: Drogosz, P.
Powiązania:: https://bibliotekanauki.pl/articles/242183.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: internal combustion engines
Wankel rotary engines
trochoid
seals
equidistant
Opis:: This article describes the basic principles for determining the trajectory of the apex seals of Wankel rotary engines. An attempt is made as the Wankel engine seems to be the convenient as the burning hydrogen fuel engine. The main advantage is particularly intensive cooling. The main disadvantage is high pollution of combustion gases. Analyzing the working constructions it is possible to find the main sources of pollution. After all it seems that specific work of rotating piston seals are the main reason of usage big volume of lubrication oil. But part of lubrication oil is burnt together with the fuel increasing the pollution. Even using hydrogen as fuel it remains difficult to meet EURO V regulations of combustion gases pollution made by transport vehicles. Every possibility of volume reduction of lubrication oil is important. In the article the trajectories of apex seals are discussed. As the mathematical model of trajectory a special formula of trochoid was chosen. The main advantages of the chosen form of mathematical equation are applications of two main parameters: curve size parameter and dimensionless curve parameter. These two parameters decided about convenience in changing volume of internal combustion engines and comparisons of performance characteristic of different Wankel engines. In other publications connected with Wankel motors more complicated mathematic formulas are still used.
Źródło:: Journal of KONES; 2011, 18, 2; 117-122
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Heat release characteristics in combustion chamber of CI engine
Autorzy:: Jankowski, A.
Lagowski, P.
Slezak, M.
Powiązania:: https://bibliotekanauki.pl/articles/244001.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: internal combustion engines
diesel engines
combustion processes
heat release
Opis:: On the basis of the internal heat balance of CI engine with direct fuel injection, the quantity of heat transported during the combustion process from the combustion zone was determined. The real indicator diagrams are the bases for determination of the heat release Characteristics during the combustion process and making up of the internal heat balance. These diagrams were worked out for the engine fuelled with diesel oil for three sets of the injection timing and for work of the engine according to the full load engine Characteristics, and the load Characteristics taken at the engine speedb for the maximum engine torque. Tests with the three different injection timing were carried out. Tests with the load characteristics of the compression-igniting engine for five values of the power were carried out. The pressure in the cylinder of the engine during combustion process was recorded by means of liąuid cooled a piezo-electric quartz sensor with a load amplifier. Characteristics of heat release depended on the composition, temperature and the mol quantity of the working charge in the cylinder during the combustion process. Characteristics of the heat release were determined with the use of the novel calculation program. The program was worked out by authors at the assumption that the process of complete combustion was finished at the moment of the opening of the engine exhaust valve. For purpose of simplification calculation of the quantity of heat lost into the cooling system, the radiation, dissociation and incomplete combustion, were assumed to change during the combustion process in a linear way.
Źródło:: Journal of KONES; 2010, 17, 3; 155-164
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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