Temat: Diesel engine - Katalog OPAC zbiorów

Skocz do pozycji: 31.

Tytuł:: Assessment of the diagnostic suitability of net thermal efficiency of marine diesel engine
Autorzy:: Pawletko, R.
Polanowski, S.
Witkowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/247360.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: indicator diagram
thermal efficiency
diesel engine diagnosis
Opis:: This article applies to searching for symptoms and diagnostic parameters pointing in a deterioration in the quality of the combustion process in marine diesel engines. It was assumed that diagnostic parameters should give clear information regardless of engine load or with respect to the mean indicated pressure. The proposed cycle and sectional net thermal (heat) efficiency characteristics and also dimensionless net heat release rate were analysed. In order to obtain the state of deterioration of the injection process simulation of discalibration (larger diameter) of injector holes was performed. The simulation was carried out by the enlarged of diameter of the injector holes form 0.375 mm to 0.385 mm. Deterioration of the formation and growth of fuel spray droplet diameter is result of such simulation. The study was conducted on a laboratory engine Sulzer Al25/30. The study was carried out according to active experiment plan, during which the selected engine failure of the injection system was simulated. Measurements of pressure of combustion were performed by means of tensometric sensors of Spice Company on the indicator valve. The analysis found that in the event of injector nozzle faults (discalibrated holes) significantly decreases the net thermal efficiency η c cycle, and there are significant oscillations of net
Źródło:: Journal of KONES; 2013, 20, 4; 327-332
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Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 32.

Tytuł:: The effect of diesel/ethanol blends on variations of selected combustion parameter
Autorzy:: Lotko, W.
Smigins, R.
Górski, K.
Powiązania:: https://bibliotekanauki.pl/articles/242253.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: misfire detection
diesel engine
combustion process
ethanol
Opis:: This paper presents and discusses selected research results of the diesel engine fuelled with blends of: diesel oil (DO), synthetic ethanol (ET) as oxygenated additive and small quantity of fatty acid methyl esters (FAME) used as emulsifier. Content of ethanol in diesel oil was changed in wide range (up to 50%). Addition of 5% by vol. Of FAME was constant for each tested mixture. Preliminary tests were focused on influence of fuels blends composition on its combustion process. The main analyzed parameter was mean indicated pressure and its unrepeatability index. Research suggests that diesel oil blended with up to 20% of ethanol can be successfully used for diesel engines feeding. Higher ethanol content in mixture with diesel oil is unfavourable because misfire phenomenon occurs immediately. In this case tested engine works unstable with extremely high toxic gases emission. Some physical properties of tested fuels, measurement system configuration, Values of mean indicated pressure vs. cycle number for AD3.152 engine fuelled with: pure diesel oil, ETIO, ET20, ET30, ET 40, ET50, Variations of unrepeatability index of mean indicated pressure in relationship to kind of tested fuels are presented In the paper. Research shows that tested engine is not possible to operate with using above 40% of ethanol content in diesel oil, as the fuel simply will not ignite.
Źródło:: Journal of KONES; 2009, 16, 2; 279-284
1231-4005
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Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 33.

Tytuł:: Possibility of using visualization to present running point of marine diesel engine
Autorzy:: Krzyżanowski, J.
Witkowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/246958.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: monitoring
marine diesel engine
torque
field of work engine
Opis:: The following paper introduces us to possibility of using visualization to present running point of main marine diesel engine during ship operation. Construction development of ship marine diesel engine going towards more and more power results in large mechanical and thermal load. So ship marine diesel engines of new generation are more susceptible to damage caused by overloading than the ones of older generation. For this reason more and more attention is paid to proper operation of these main marine engines understood as the way of choosing the right parameters resulting in adequate point of engine operation. This kind of exploitation is being reflected in more and more rigorous requirements imposed by ship engine producers concerning the conditions of their exploitation. This paper presents measured parameters during engine operation and of the sometime confirming its current performance. Special attention has been paid to the measurement of torque. Measurement of torque and revolution speed of the main marine diesel engine have been linked with the possibility of visual presentation of running point of the engine. By means of research carried out of HCP Engine Test Bed it was possible to prove effectiveness of succession of measurement instruments and torque meter action. Visualization algorithm which can be used to present field of work and running point of the engine has also been tested.
Źródło:: Journal of KONES; 2010, 17, 2; 271-275
1231-4005
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Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 34.

Tytuł:: Premixed combustion of acetylene-hydrogen fuel mixtures for thermodynamic state generation in a constant volume combustion vessel
Autorzy:: Johnson, S.
Nesbitt, J.
Lee, S. -Y.
Naber, J. D.
Powiązania:: https://bibliotekanauki.pl/articles/242374.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
diesel engine
combustion processes
pressure vessel
preborn
Opis:: Flammability limits and flame speeds of dilute-lean fuel mixtures of hydrogen (H2) and acetylem premixed with oxygen (02) and nitrogen (N2) were examined with a detailed kinetics model. These mixtures are used in a preburn in a constant volume combustion vessel to create elevated temperatures and pressures with gas compositions that represent the thermodynamic state in a diesel engine combustion chamber at fuel injection and auto ignition. A mixture of hydrogen and acetylene with combined atomic hydrogen to carbon ratio (HCR) of 1.85 was used to match that of typical diesel fuel and results are shown in comparison to a previously used mixture with a HCR of 1.17. The lower flammability limit (LFL) of the HCR 1.85 fuel mixture was found at an equivalence ratio of 0.235, while flame speed and adiabatic combustion temperatures were also predicted for post preburn product oxygen levels between O and 21 percent. Flame speeds were shown to decrease with a reduction in oxygen concentration, an increase in nitrogen dilution, while combustion temperatures increased over most of this range. Trends for this relation of flame speed and temperature are presented and a new premixed fuel mixture with an HCR of 1.85 is proposed.
Źródło:: Journal of KONES; 2009, 16, 2; 199-208
1231-4005
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Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 35.

Tytuł:: The application of non-converted vegetable oils in contemporary self-ignition engines
Autorzy:: Reksa, M.
Powiązania:: https://bibliotekanauki.pl/articles/245366.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engines
vegetable oils
diesel engine
alternative fuels
Opis:: The paper presents a test of a self-ignition engine equipped with high-pressure fuel-dosing system based on injection units with electronic control system. The engine was fuelled with conventional fuel and few kinds of non-converted vegetable oil. The analysis of the experiment results correlated with knowledge of their properties shows the important conclusions about possibilities, disadvantages and perspectives of the fuels usage in contemporary engines equipped with electronic control fuel-dosing system. The vegetable oils have a special place in history of automotive industry. In 1900 a great event on Word Trades in Paris was compression-ignition engine fuelled by groundnuts oil — a masterpiece of no one else like Rudolf Diesel. R. Diesel, aware of conventional fuels limitation, patented in 1892 a vegetable oil as a fuel. The NOx concentration in exhaust was measuredfor maximum engine speed (1900 rpm). The lowest emission ofmeasured compounds was observed in case of sunflower oil and rape oil "Biedronka" (65% and 75% of emission during engine work fuelled by conventional diesel oil). The highest values were detected for post frying palm oil and rape oil "Aldi" (120% of emission during engine work fuelled by conventional diesel oil).
Źródło:: Journal of KONES; 2009, 16, 4; 385-391
1231-4005
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Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 36.

Tytuł:: Biogas as a fuel for diesel engines
Autorzy:: Wierzbicki, S.
Powiązania:: https://bibliotekanauki.pl/articles/246845.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: biogas
methane
diesel engine
dual-fuel supply system
Opis:: The pursuit of reduced greenhouse gas emissions, as well as the increased share of renewable fuels in the overall energy balance has led to a search for alternative energy sources. One of the fuels on which great hopes are set as fuel for engines is biomethane or biogas, whose main component is methane. Biogas can be obtained from different products by using different technologies, so that it has potential as a widelyavailable fuel, which is quite easy to produce. The percentage of methane in biogas depends on the technology for obtaining biogas and ranges from 35% to around 75%. The largest biogas sources can be animal farms, where it is obtained from animal excrement. Another source is sewage treatment plants and rubbish dumps, where substantial quantities of biogas are obtained as a result of natural processes occurring in waste dumping sites or sewage. Biogas can also be acquired from waste obtained from fruit and vegetable processing as well as waste from meat plants. This paper examines the possibility of using biogas as a fuel for diesel engines. In these engines, the combustion of biogas (methane) requires the application of a dual-fuel supply system in which liquid fuel initiating gas fuel selfignition will be injected into the combustion chamber along with methane. The paper also contains example results showing the effect of the methane dose on the course of the combustion process in diesel engines.
Źródło:: Journal of KONES; 2012, 19, 3; 477-482
1231-4005
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Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 37.

Tytuł:: Research of usage of RRME and alcohol biofuel mixture in diesel engine
Autorzy:: Lebedevas, S.
Lebedeva, G.
Žaglinskis, J.
Powiązania:: https://bibliotekanauki.pl/articles/246865.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: biodiesel
biofuel
diesel engine
environmental and energy parameters
Opis:: The paper provides the results of an integrated research of the energy, environmental performance and traction indicators and the characteristics of fuel feed and performance of A41, 2F511, VALMET 320 DMG and Audi 1Z highspeed, direct-injection diesel engines when converting their operation from mineral diesel D to the fatty acid esters (RRME and RRBE) and alcohol biodiesel mixtures. The researches are carried out in cooperation of the Lithuanian and Polish partners within the framework of joint scientific projects under EUREKA international scientific program „E!4018 CAMELINA-BIOFUEL”. In the light of the new EU initiatives („White Paper” 2011), 30% optimum part of RRME bio-component in the mixture with D (B30) is validated for practical use. The characteristics of fuel supply and heat generation in a diesel cylinder are under investigation; an explanation of a significant reduction in the harmful component emission (EG) and 2 to 4% increase in the fuel efficiency in case of use of B30 and B10 biodiesels is offered. The presence of the ethanol alcohol component 9E) in D-RME-E and RME-E biofuel mixtures resulted in reduction of CO and NOx emission by 10 to 12% and EG smokiness - by 20% per each 10% increase of E part. The indicated efficiency of performance was increased by 2-2.5%. The indicators of cyclic instability did not exceed the corresponding indicators in diesel operation on D. It is established that the motor properties of tested B30 and B50 biofuels based on butanol and rapeseed oil butyl ester RBE are similar to RME biodiesels and have important advantages over them: the complete solubility of alcohol component and the possibility of B30 (D-RBE) use at ambient temperature up to -30 centigrade. The motor characteristics of the second-generation biodiesels produced from the non-food raw material (Camelina Sativa oil methyl esters) are highly competitive with and even exceed by separate indicators the similar indicators of certified RME biodiesels. It is demonstrated that the conversion of diesels, including the automobile diesels with EGR electronic system, to operation on D-RRME (RME, CSME) biodiesels does not require the change of regulation characteristics of the fuel-feed system. The test of the oxidation stability of D-RME and D-CSME biodiesels performed under operating conditions on S. Lebedevas, G. Lebedeva, J. Žaglinskis VALMET 320 DMG marine diesel proved the stability of the motor, energy, and environmental performance indicators for 7-8 months' biodiesel storage without the addition of antioxidant and for 13-14 months' storage - with the addition of Ionol BS200 antioxidant.
Źródło:: Journal of KONES; 2012, 19, 2; 289-304
1231-4005
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Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 38.

Tytuł:: Assessment of ships engine effective power, fuel consumption and emission using the vessel speed
Autorzy:: Borkowski, T.
Kasyk, L.
Kowalak, P.
Powiązania:: https://bibliotekanauki.pl/articles/247151.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ships
main propulsion
marine diesel engine
exhaust emission
Opis:: Currently, the Baltic Sea States suggests a proposal to designate the Baltic Sea as an Emission Control Area for nitrogen oxides, in accordance with Annex VI of MARPOL73/78. The emission would be estimated on the data produced by the AIS (Automatic Identification System) system that is compulsory for ships. Therefore, exhaust emission of the ships' can be computed using the actual speed and main propulsion shaft power. Mostly, main propulsion engines' exhaust emission is dependent to realistic performance and can be determined. The research plan has been prepared, aimed an evaluating the main propulsion engine performance and emissions. In cooperation with the ship owner, the experimental program onboard the container vessel, equipped with latest large bore, two-stroke, and slow speed MAN B&W electronic controlled engine was carried out. The records set of vessel speed and related engine shaft power, fuel consumption and exhaust emission for container vessel is formed. Taking into account; main engine performance, types of fuel and other input data, the emission factors were determined for ship sea service state. Main engine shaft power estimation and measurement setup, examples of main engine shaft power, the shaft power equation coefficients density, example of main engine service operation, fuel oil consumption group, the ship speed estimated form, example of main engine area operation influenced by weather conditions are presented in the paper.
Źródło:: Journal of KONES; 2011, 18, 2; 31-39
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Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 39.

Tytuł:: Monitoring of torsional vibration of a crankshaft by instantaneous angular speed observations
Autorzy:: Dereszewski, M.
Powiązania:: https://bibliotekanauki.pl/articles/242907.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diagnostics
diesel engine
torsional vibrations
torque
angular speed
Opis:: Continuous monitoring of diesel engine performance under its operating is critical for prediction of malfunction development and subsequently functional failure detection. Analysis of Instantaneous angular Speed (IAS) of the crankshaft is considered as one of non-intrusive and effective method of detection of combustion quality deterioration. The paper contains presentation of attempt of monitoring of piston engine’s crankshaft torsional vibrations by measurement of Instantaneous Angular Speed at free and power output ends of the engine. It is assumed that calculation of differential value of angular distance run between both ends in the same time shall give the picture of torsion angle magnitudes and phases of the peak values. Fir carrying out such measurements, high frequency of sampling was required. The angular speed measurements is to be done utilising two optical sensors for reading and two perforated discs mounted at shaft’s ends playing the role of speed signal emitters. In the paper is presented description of the measurement system and explanation of its mode of work. It is also shown analysis of measurement accuracy, way errors elimination and method of signals runs filtration. Presented results of experiment derives from test cycle carried out using laboratory stand of Gdynia Maritime University equipped with 3- cylinder self - ignition engine, powering electric generator.
Źródło:: Journal of KONES; 2016, 23, 1; 99-106
1231-4005
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Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 40.

Tytuł:: Validation of reference sampling for failure detection by crankshaft angular speed analysis
Autorzy:: Dereszewski, M.
Charchalis, A.
Powiązania:: https://bibliotekanauki.pl/articles/243825.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diagnostics
marine diesel engine
angular speed
reference comparison
Opis:: The paper presents results of the experiment focused on evaluation of records of runs of the engine in good condition as a reference for subsequent detection of faults of fuel system of medium speed diesel engine. The aim of research was determination of limits of instantaneous angular speed's spread spotted between random starts of the engine, without any fault condition simulation. Due to fine variation of the load setup and different ambient condition, every record of angular speed of independent starting, despite of attempts to sustain the same load and rotational speed value, presents some deviations between runs. Having on mind utilization of such measurement as a template for further comparison, is crucial to find out how random changes of ambient conditions and accuracy of revolutionary speed setup affect the IAS magnitude course. The answer was got in way of registration of numerous runs of the test engine after independent starts and hand adjustment of required RPM’s. The experiment was carried out at laboratory stand in GdyniaMaritimeUniversity, equipped with diesel engine Sulzer 3AL 25/30 driving electrogenerator. Sulzer 3AL 25/30 is three cylinder, medium speed, four stroke marine diesel engine, with maximum output 400 kW at 750 rpm. Independent records were treated as random variable and were compared each other. Obtained results were compared with differences between healthy engine and with simulated malfunctions of fuel injection.
Źródło:: Journal of KONES; 2014, 21, 4; 63-70
1231-4005
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Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:: The effect of diesel fuel mixture and camelina oil ester on the process of fuel injection in traction engine
Autorzy:: Orliński, S.
Orliński, P.
Wojs, M. K.
Powiązania:: https://bibliotekanauki.pl/articles/246900.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuel plant
process of injection
engine test bench diesel engine
Opis:: This paper presents the results of comparative research on basic physical and chemical properties of pure diesel fuel and two types’ mixtures of Camelina oil ester (Camelina oil ester content of the mixture was 10% and 15%) and diesel fuel. Application of these mixtures has different physicochemical properties to power supply diesel engine, made it possible to detect existing differences in the injection process (pumping and spraying). The analysis of the injection process has been defined through experimental graphs of the fuel pressure in injection line and registered height of the needle injector. With the knowledge of these two fast-changing engine parameters and loadvelocity conditions, there were calculated: fuel flow speed from nozzle, range and fuel spray disintegration time and the average critical diameter of the droplets. In the final part of the article it was shown, that the fuel with different physicochemical properties has a significant impact on the injection process. There were also made a comparative assessment of the suitability test compounds for use in service.
Źródło:: Journal of KONES; 2013, 20, 1; 255-261
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 42.

Tytuł:: Validation of reference sampling for failure detection by crankshaft angular speed analysis
Autorzy:: Dereszewski, M.
Charchalis, A.
Powiązania:: https://bibliotekanauki.pl/articles/247164.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diagnostics
marine diesel engine
angular speed
reference comparison
Opis:: The paper presents results of the experiment focused on evaluation of records of runs of the engine in good condition as a reference for subsequent detection of faults of fuel system of medium speed diesel engine. The aim of research was determination of limits of instantaneous angular speed's spread spotted between random starts of the engine, without any fault condition simulation. Due to fine variation of the load setup and different ambient condition, every record of angular speed of independent starting, despite of attempts to sustain the same load and rotational speed value, presents some deviations between runs. Having on mind utilization of such measurement as a template for further comparison, is crucial to find out how random changes of ambient conditions and accuracy of revolutionary speed setup affect the IAS magnitude course. The answer was got in way of registration of numerous runs of the test engine after independent starts and hand adjustment of required RPM’s. The experiment was carried out at laboratory stand in Gdynia Maritime University, equipped with diesel engine Sulzer 3AL 25/30 driving electrogenerator. Sulzer 3AL 25/30 is three cylinder, medium speed, four stroke marine diesel engine, with maximum output 400 kW at 750 rpm. Independent records were treated as random variable and were compared each other. Obtained results were compared with differences between healthy engine and with simulated malfunctions of fuel injection.
Źródło:: Journal of KONES; 2014, 21, 3; 67-74
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 43.

Tytuł:: Influence of fuel pollutants on operating parameters of contemporary fuel injector
Autorzy:: Osipowicz, T.
Stoeck, T.
Gołębiewski, W.
Powiązania:: https://bibliotekanauki.pl/articles/247182.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuel injector
diesel engine
common rail injection systems
Opis:: Article describes the operation issues of contemporary injection systems of Diesel engines. Common-rail system has been used since 1997, and since then there has been a significant evolution in its construction. In this aspect, there are changes in generations of high-pressure injection pumps and fuel injectors as well as methods of steering them, but exploitation problems are the same. The most prone to malfunction elements of the system are the fuel injectors. Their task is to distribute and to spray of the fuel in the combustion chamber of engine. Common Rail fuel injectors generate few injection dosages in the one work cycle. The rate of injection is depended on the design of the steering valve. One very important parameter of fuel injector is fuel injection delay time. If the time from control start of fuel injector to begin injection is shorter then it causes generation of greater number of injection dosages. Pollutants in fuel in the form of various amorphous solids of the size an even few microns cause the decrease of operating parameters of injector, which adversely affects the operation of the engine. Article shows contemporary fuel injectors, the methods of their examination, the types of fuel pollutants and their impact on fuel injector work.
Źródło:: Journal of KONES; 2015, 22, 3; 169-174
1231-4005
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Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 44.

Tytuł:: Comparison of indicator and heat release graphs for vw 1.9 tdi engine supplied diesel fuel and rapeseed methyl esters (RME)
Autorzy:: Cisek, J.
Powiązania:: https://bibliotekanauki.pl/articles/247568.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: RME
FAME
indicator diagrams
heat realise
diesel engine
Opis:: The results of investigation of 1,9 TDI engine (285 Nm, 85 kW, type AJM without any modification) equipped with injection units supplied conventional diesel fuel (ON) or B100 fuel (RME) have been presented in article. Investigations have been realized at the engine speed of 2000 rpm and variable load within the range of 0 to 275 Nm. The pressure, temperature and heat release velocity runs have been subjected to analysis. Particular attention has been paid to the release of the heat used for the effective work and internal energy increase of the working medium (enthalpy) during combustion inside the engine cylinder versus the crank angle for both investigated fuels. It was found among the others that mentioned fuels differ in the heat release, heat velocity and the maximal combustion temperature, which for the B100 fuel is bigger than for the conventional diesel fuel. Bigger combustion dynamics of tested biofuel (compared with standard diesel fuel) results higher concentrations of Nitrogen Oxides NOx in exhaust gases. The easiest way is of course the use of the later start of fuel injection biofuels and/or increase the exhaust gas recirculation EGR. These treatments, however, result in a worsening of the energy performance of the engine. It was concluded also that the combustion of RME works properly at higher engine loads. Then reduce the negative difference between the combustion of biofuel (RME) and standard Diesel fuel.
Źródło:: Journal of KONES; 2013, 20, 4; 71-78
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 45.

Tytuł:: Method for modelling temperature distribution in exhaust system of diesel engine in the light of mine systems of heat recuperation
Autorzy:: Chuchnowski, W.
Tokarczyk, J.
Stankiewicz, K.
Woszczyński, M.
Powiązania:: https://bibliotekanauki.pl/articles/242169.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: recuperation
diesel engine
Peltier's cell
temperature distribution
CFD
Opis:: Analysis of temperature distribution and heat flow in the exhaust system of diesel engine to determine technical parameters of the system for heat recuperation and changing of thermal energy into electric energy was presented. Temperature of exhaust gases as well as geometrical and material features of exhaust system were the input data accepted for modelling. Computational Fluid Dynamics (CFD) was used to determine temperature distribution in the exhaust system. The software by use numerical methods finite volume method) enables solving partial differential equations consisting of equations of: continuity, Navier-Stokes, Fourier-Kirchoff and complemented with other equations important as regards the discussed phenomenon (e.g. with turbulences models)transforming them in the algebraic equations or common differential equations. CFD software enables gaining some information as regards flow rate, distribution of speed field, and pressure field as well as heat flow, temperature field and mass field. Design and principle of operation of Peltier 's cell, model of recuperator, exhaust system, and diesel engine, finite elements meshing, boundary conditions assumed in analysis of exhaust gases and water flow, distribution of temperature field (maximal temperature of scale 335 K and maximal temperature of scale 400 K) on external wall of exhaust system and cross-section of exhaust system are presented in the paper.
Źródło:: Journal of KONES; 2011, 18, 2; 101-108
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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