Temat: engine gasoline - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The influence of spray guided charge on possibility of stratified mixture formation in SI gasoline direct injection engine
Autorzy:: Sendyka, B.
Kudzia, S.
Powiązania:: https://bibliotekanauki.pl/articles/242770.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: SI engine
gasoline direct injection
spray guided
mixture stratification
fuel stream
Opis:: In this paper there has been described the structure of ZI gasoline direct injection engines in which there has been applied spray guided. There has been shown the burning chambers structure of the engines of that type. There has been also presented the modification range of ZI engines equipped with system of gasoline multipoint indirect injection in order to get the gasoline direct injection engine with spray guided. The authors have described the block diagram of fuel supply system of this type of an engine which is being developed in Cracow University of Technology's Combustion Engine Department. Certain information about mechanical modification of engine is given. They have proposed model of fuel air mixture stratification in a combustion chamber of spray guided engine, in which base homogeneous mixture come into being out of the this chamber. In this paper there has been also designated an influence of an angle of crank shaft on initial velocity of fuel stream and on flow intensity of fuel stream that flows through the injector. There also has been presented an influence of air fuel coefficient of homogeneous base mixture on the angle on a crank shaft of ignition charge.
Źródło:: Journal of KONES; 2007, 14, 4; 393-402
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Property determination for ethanol-gasoline blends with application to mass fraction burn analysis in a spark ignition engine
Autorzy:: Yeliana, Yeliana
Worm, J.
Michalek, D.
Naber, J.
Powiązania:: https://bibliotekanauki.pl/articles/950185.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ethanol-gasoline blend
mass fraction burn
heat release
IC engine
fuel-air mixture properties
Opis:: The Mass Fraction Burn (MFB) and Heat Release Rate (HRR) reflects the amount of fuel burned, and the rate of burning throughout the combustion process in an internal combustion engine. These parameters play a crucial role in research and development endeavors focused on engine efficiency, emissions, and overall operating performance. They are computed by analyzing measured pressure data and applying thermodynamic principals to determine the energy released during the combustion process. Thus, the properties of the fuel-air and combusted gas mixtures play an important role in the analysis. Engine pressure data were taken from a Spark-Ignition Cooperative Fuels Research (CFR) engine operating at a constant load of 330 kPa Net Indicated Mean Effective Pressure (Net IMEP) and using five ethanol-gasoline fuel blends: E0 (gasoline), E20, E40, E60, and E84. The fuels were assumed to be in a non-reacting state throughout the mixing process. Once the fuel mixture properties were known, the fuel-air and burned mixture properties were determined using the fuel-air mass ratio. The analysis presented within this paper details the process by which the fuel, fuel-air, and burned mixture properties can be determined. The MFB of five different fuel blends at a chosen operating condition was also presented along with the pressure trace, the temperature and the gamma profile at the end of this paper.
Źródło:: Journal of KONES; 2008, 15, 2; 553-561
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Wiebe function parameter determination for mass fraction burn calculation in an ETHANOL-GASOLINE fuelled SI engine
Autorzy:: Yeliana, Yeliana
Cooney, C.
Worm, J.
Michalek, D.
Naber, J.
Powiązania:: https://bibliotekanauki.pl/articles/949481.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ethanol-gasoline blend
mass fraction burn
IC engine
Wiebe function
Opis:: The Mass Fraction Burn (MFB) and Heat Release Rate (HRR) reflect the amount of fuel burned and the rate of burning throughout the combustion process in an internal combustion engine. These parameters play a crucial role in research and development endeavours focused on engine efficiency, emissions, and overall operating performance. Analytically in a Spark-Ignition (SI) engine, these parameters are often modelled with the Wiebe function, a well known mass fraction burn formulation, which is a function of "a" (efficiency parameter), "m" (form factor), crank angle, and the duration of combustion. This function is a simple but powerful correlation model that is well suited for zero and one dimensional engine cycle simulations. In this work, the Wiebe function parameters are determined over a range of fuel compositions and compression ratios by fitting the Wiebe function curve to the experimentally obtained MFB data from a single-zone HRR analysis. The Wiebe function parameters are determined using a curve fitting model by finding the minimum of a scalar function of several variables. This functionality has been built into the single-zone mass fraction burned model. Experiments with five ethanol-gasoline fuel blends: E0 (gasoline), E20, E40, E60, and E84 were conducted on a SI Cooperative Fuels Research (CFR) engine while holding a constant load of 330 kPa Net Indicated Mean Effective Pressure (Net IMEP). There were five methods introduced to fit the Wiebe function parameters, which utilized a combination of least square method and direct algebraic solution. This paper details the process used to determine the Wiebe function parameters, and compare the results obtained using these methods for the ethanol-gasoline mixture concentrations.
Źródło:: Journal of KONES; 2008, 15, 3; 567-574
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Effects of using a dual-injector fuel system on a process of combustion in a spark-ignition engine
Autorzy:: Sendyka, B.
Noga, M.
Powiązania:: https://bibliotekanauki.pl/articles/246083.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: dual-injector fuel system
gasoline
direct injection
port injection
combustion
spark-ignition engine
Opis:: This paper analyzes aprocess of combustion in a spark-ignition engine. The aim of the analysis was to determine the differences in the combustion process between the engine with a classic multipoint injection system and a system which injects fuel directly to the cylinders as well. To aid in the analysis the measurements of the high variable pressure in the engine's cylinder against the crankshaft angle were taken. This allowed us to obtain indicated diagrams for both types of engines. To eliminate distortions, both functions were approximated using combined functions. The other basic parameters were also measured: torque, RPM and instantaneous fuel consumption. The analysis of the indicated diagrams yielded an indicated mean pressure and thermal efficiency for both fuel systems. Then, a comprehensive analysis ofpressures in cylinders was performed in order to determine the way the flame spreads in the cylinder for the two types of engines. The results obtained from this analysis show that the speed of combustion is greater for the charge formed by the dual-injector fuel system. The increased speed of the combustion, especially when it reaches a 50% fraction of the exhaust gas in the cylinder, is what accounts for the increase in the indicated mean pressure and the increase in the thermal efficiency of the engine with a dual-injector fuel system. The time of the spreading of the flame, as well as the fast burn period were reduced. The increased efficiency of the combustion process in the cylinder me ans that the heat losses through the cylinder sleeve are greatly reduced. The results of the research in this paper confirm the purposefulness of using a dual-injector fuel system in a spark-ignition engine.
Źródło:: Journal of KONES; 2010, 17, 1; 389-397
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Identification of fuel injection control system in a GDI engine
Autorzy:: Wołczyński, Z.
Powiązania:: https://bibliotekanauki.pl/articles/246237.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: gasoline engine
mixture composition
injector characteristic
control of volumetric efficiency
Opis:: In 1995 as a first in the world Mitsubishi introduced SI engine with the direct fuel injection to combustion chamber GDI (Gasoline Direct Injection). Currently such a way of providing of gasoline is applied and introduced to mass production by other companies. This solution permits to burn stratified mixtures which is rich in the region of the spark plug and very lean in more distant areas of the combustion chamber. The average mixture composition of such a mixture is very poor and often incombustible. The combustion of lean mixture to some extend permits to reduce fuel consumption but limits also the possibility of reduction of NOx by the typical catalyst. Furthermore the direct injection of gasoline to combustion chamber gives the possibility of the precise dosage in each cycle. The precise control of mixture composition is possible because the injection of the fuel takes place after closure of inlet valve, so the amount of the air in the cylinder is known. The precise dosage and the dispersion of the fuel in connected with several problems. The additional information which is provided by sensors installed on the engine is very useful to solve. Gasoline direct injection fuel systems are equipped with sensors which aren't use in standard indirect systems. These problems are described in the paper with special attention paid on the accuracy of the dosage of the fuel and all problems related with this.
Źródło:: Journal of KONES; 2010, 17, 4; 599-606
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

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

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Effect of butanol blend on in-cylinder combustion process. Part 2: Compression ignition engine
Autorzy:: Tornatore, C.
Marchitto, L.
Mazzei, A.
Valentino, G.
Corcione, F. E.
Merola, S. S.
Powiązania:: https://bibliotekanauki.pl/articles/246225.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: optical diagnostics
combustion process
common rail CI engine
diesel/gasoline blend
diesel/butanol blend
Opis:: To meet the future stringent emission standards, innovative diesel engine technology, exhaust gas after-treatment, and clean alternative fuels are required. Oxygenated fuels showed tendency to decrease internal combustion engine emissions. In the same time, advanced fuel injection modes can promote further reduction in pollutants at the exhaust without penalty for the combustion efficiency. One of the more interesting solutions is provided by the premixed low temperature combustion (LTC) mechanism jointly to lower-cetane, higher-volatility fuels. In this paper, to understand the role played by these factors on soot formation, cycle resolved visualization, UV-visible optical imaging were applied in an optically accessed high swirl multi-jets compression ignition engine. Combustion tests were carried out using two fuels: commercial diesel and a blend of diesel with n-butanol. The fuels were tested at 70MPa injection pressure and different timings. At late injection timing coupled to high EGR rate (50%), the blends increased the ignition delay allowing operating in partially premixed LTC (PPLTC) regime in which the fuel is completely injected before the start of combustion. Strong reduction in engine out emissions of smoke and NOx were obtained with a little penalty on engine efficiency. This limitation was overcome operating at earlier injection timing in which a mixing controlled combustion (MCC) LTC regime was realized. In this regime, a good compromise between low engine out emissions and efficiency was achieved.
Źródło:: Journal of KONES; 2011, 18, 3; 473-483
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Właściwości smarne benzyn silnikowych
Autorzy:: Jakóbiec, J.
Wysopal, G.
Powiązania:: https://bibliotekanauki.pl/articles/311688.pdf
Data publikacji:: 2011
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: paliwa benzynowe
silnik o zapłonie iskrowym
benzyna bezołowiowa
właściwości smarne benzyn
automotive gasolines
spark-ignition engine
unleaded gasoline
lubricity of gasolines
Opis:: W artykule zamieszczono informacje dotyczące rozwoju technologii benzyn silnikowych, w tym właściwości smarnych, jako istotnego parametru jakościowego paliw silnikowych ze względu na trwałość pomp wtryskowych. Omówiono czynniki kształtujące właściwości smarne benzyn silnikowych z uwzględnieniem składu komponentowego oraz zamieszczono wyniki badań specjalistów w tym temacie jak również możliwości ich poprawy poprzez wprowadzenie substancji smarnościowych.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2011, 12, 10; 212-215
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Badania samochodu napędzanego silnikiem FSI - systemem elektronicznego sterowania bezpośrednim wtryskiem benzyny
FSI - electronic control of gasoline direct injection system
Autorzy:: Typańska, D.
Putz, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/158749.pdf
Data publikacji:: 2012
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Elektrotechniki
Tematy:: bezpośredni wtrysk paliwa
elektroniczne sterowanie
FSI
mieszanka jednorodna
mieszanka uwarstwiona
silnik benzynowy
electronic engine control
fuel direct injection
gasoline engine
homogeneous mixture
stratified mixture
Opis:: W artykule zaprezentowano szczegółową analizę systemu bezpośredniego wtrysku benzyny FSI (Fuel Stratified Injection) stosowanego w samochodach koncernu Volkswagen Group. W pracy przedstawiono charakterystyczne elementy budowy z opisem ich wpływu na działanie tego typu silnika. Następnie przedstawiono wyniki badań mocy silnika, momentu obrotowego, emisji zanieczyszczeń oraz zużycia paliwa, przeprowadzonych na modelu VW Passat 2.0 FSI oraz porównano z wynikami badań odpowiednika o wtrysku pośrednim - VW Passat 2.0 MPI.
In this article is presented a detailed analysis of FSI (Fuel stratified injection) gasoline direct injection system used in the Volkswagen Group cars. In the paper are also presented characteristic elements of the construction with a description of their impact on the operation such a type of engine. Next are presented results of research like engine power, torque, exhaust emissions and fuel consumption, carried out on the VW Passat 2.0 FSI and compared with test results in the indirect injection equivalent - VW Passat 2.0 MPI.
Źródło:: Prace Instytutu Elektrotechniki; 2012, 260; 107-119
0032-6216
Pojawia się w:: Prace Instytutu Elektrotechniki
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Diagnostyka w układzie zasilania dawką paliwa w silniku benzynowym
Diagnostics engine control dose of fuel
Autorzy:: Duer, S.
Zajkowski, K.
Sokołowski, S.
Łyskojć, D.
Grodecki, B.
Powiązania:: https://bibliotekanauki.pl/articles/316716.pdf
Data publikacji:: 2012
Wydawca:: Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:: diagnostyka
układ zasilania
dawka paliwa
silnik benzynowy
diagnostics
suppy system
fuel delivery
engine gasoline
Opis:: W artykule zaprezentowano problematykę badania w układzie wypracowania i zasilania silnika dawką paliwa. Badanie tego typu, na który wpływ ma sprawność sterownika silnika należy do trudnych przedsięwzięć diagnostycznych. Wiarygodnym sprawdzeniem w układzie zasilania dawką paliwa jest badanie stanu sterownika silnika na podstawie wykreślonych "map roboczych" sterujących wtryskiwaczami (wtryskiem paliwa). Kolejnym badaniem powinno być sprawdzenie stanu wydatkowania paliwa przez wtryskiwacze w określonym czasie. Badanie należy przeprowadzić przy różnych prędkości obrotowych silnika. Diagnoza może być wypracowana na podstawie porównania wyznaczonych parametrów sygnałów z ich wielkościami wzorcowymi (serwisowymi). Wynik tej diagnozy pozwoli ocenić sprawność układu zasilania dawką paliwa w silniku.
The paper presents the research issues in the system to develop and supply engine fuel delivery. The study of this type, which affected the efficiency of the engine controller is diagnostic of challenging projects. Reliable check on the fuel supply system is to check the dose of the engine controller based on the traces, "working map" control injectors (fuel injection). Another study should be spent checking the fuel injectors at a time. The test shall be performed at different engine speeds. Diagnosis can be worked out by comparing the signals from the designated parameter to the reference values (service). The result of this diagnosis to assess the efficiency of the supply amount of fuel in the engine.
Źródło:: Autobusy : technika, eksploatacja, systemy transportowe; 2012, 13, 5; 157-163
1509-5878
2450-7725
Pojawia się w:: Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 11.

Tytuł:: A LES numerical approach for investigating the cycle-to-cycle combustion pressure variability in a direct injection gasoline engine
Metoda LES jako narzędzie do analizy fluktuacji ciśnienia dla kolejnych cykli pracy w silnikach benzynowych o wtrysku bezpośrednim
Autorzy:: Teodorczyk, A.
Jaworski, P.
Priesching, P.
Tatschl, R.
Powiązania:: https://bibliotekanauki.pl/articles/132920.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: gasoline engine
direct injection
cycle-to-cycle variability
large eddy simulation
LES
combustion
SCRE
wtrysk bezpośredni
fluktuacje cykliczne
spalanie
silnik benzynowy
Opis:: The Large Eddy Simulation method (LES) has become a powerful computational tool for the application to turbulent flows. It links the classical Reynolds Averaged Navier–Stokes (RANS) approach and Direct Numerical Simulation (DNS). This means that the large eddies are computed explicitly in a time-dependent simulation using the filtered Navier-Stokes equations. The LES resolves the large flow scales that depend directly on the geometry where the small scales are modelled by the subgrid-scale models. LES is expected to improve the description of the aerodynamic and combustion processes in Internal Combustion Engines. This paper addresses the topic of developing the combustion model GCM (Gradient Combustion model) for the Large Eddy Simulation (LES) method. Another part of this paper presents numerical investigations of cycle-to-cycle combustion pressure variability with comparison to experimental data. The Gradient Combustion model (GCM) based on the Turbulent Flame Speed Closure Model (TFSCM) is validated against the experimental data for a multi-cycle gasoline direct injection research engine (SCRE). It is shown that the introduced combustion model is stable and capable of proper representation of the experimental results which is one of the assets of the LES method.
Metoda LES jest obecnie zaawansowanym narzędziem numerycznym do analizy przepływów turbulentnych. Metoda LES opiera się na połączeniu klasyczej metody uśredniania równań Naviera-Stokes (RANS) z bezpośrednią analizą numeryczną (DNS). Oznacza to, że duże struktury wirowe są rozwiązywane niejawnie poprzez filtrowanie równań Naviera-Stokesa. W metodzie LES oznacza to obliczanie przepływu dużej skali, który zależy od geometrii, podczas gdy przepływ w małej skali jest modelowany modelem podsiatkowym (ang. Sub-grid-scale models, SGS). Uważa się, że metoda LES pozwoli na poprawienie numerycznego opisu aerodynamiki i procesów spalania w silnikach tłokowych. Artykuł przedstawia wyniki prac rozwojowych nad modelem spalania w metodzie LES. Model GCM (model spalania oparty na metodzie gradientu) został zastosowany do obliczeń wielocyklicznych i ich weryfikacji z wynikami eksperymentalnymi. Wyniki eksperymentalne pozyskano z badań na jednocylindrowym silniku badawczym (SCRE) o wtrysku bezpośrednim. W pracy pokazano, że model spalania jest stabilny numerycznie oraz otrzymane wyniki są zgodne z wynikami eksperymentalnymi, co jest jedną z ważniejszych zalet metody LES.
Źródło:: Combustion Engines; 2013, 52, 3; 794-799
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 12.

Tytuł:: Badania stanowiskowe wpływu dodatku wodoru do układu dolotowego silnika o zapłonie iskrowym na proces roboczy
Effect of intake hydrogen addition on the performance and emission characteristics of a spark-ignition gasoline engine
Autorzy:: Barański, G
Wendeker, M.
Gęca, M.
Biały, M.
Powiązania:: https://bibliotekanauki.pl/articles/134088.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: wodór
benzyna
spalanie
emisja
silnik o ZI
hydrogen
gasoline
combustion
emission
SI engine
Opis:: W artykule przedstawiono wyniki badań stanowiskowych silnika HOLDEN C20LE zasilanego dwoma paliwami (benzyną i wodorem). Procentowy udział energetyczny paliwa wodorowego w mieszaninie palnej wynosił 0, 5, 10 i 20%. Badania przeprowadzono w stanach ustalonych dla 7 punktów pracy dla prędkości obrotowej w zakresie od 1500 do 3900 obr/min. W trakcie badań rejestrowano ciśnienie w komorze spalania i emisję związków w spalinach. Analizie poddano stężenie związków w spalinach, średnie ciśnienie indykowane, kąt wystąpienia ciśnienia maksymalnego i wartość ciśnienia maksymalnego. Badania wykazały, że dodatek wodoru ma istotny wpływ na analizowane parametry.
The tests were carried out for four-cylinder, four-stroke spark-ignition engine C20LE Holden for 7 various operating points for speeds from 1500 to 3900 rpm. The energy share of a hydrogen fuel for the engine was 0, 5, 10, and 20%. Exhaust gas components (CO2, CO, HC, NOx) were analysed. The mean indicated pressure and the maximum pressure in the combustion chamber of the engine running under steady conditions was also registered. A reduction in CO2 and HC emissions and increase of NOx in certain operating conditions for the engine compared to its original fuel supply was shown. Hydrogen addition has an influence on crank angle peak pressure and its value.
Źródło:: Combustion Engines; 2013, 52, 3; 442-448
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 13.

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

Artykuł

Zmień widok

na półce

Skocz do pozycji: 14.

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

Artykuł

Zmień widok

na półce

Skocz do pozycji: 15.

Tytuł:: Nietypowe zastosowania analizatora Horiba TEOM 1105
Non-standard applications of the Horiba TEOM 1105 analyser
Autorzy:: Dutczak, J.
Powiązania:: https://bibliotekanauki.pl/articles/133413.pdf
Data publikacji:: 2013
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: emisja cząstek stałych
bezpośredni wtrysk benzyny
silnik turbinowy
PM emission
gasoline direct injection engine
turbine engine
Opis:: Analizator Horiba TEOM 1105 jest w założeniu przeznaczony do badania emisji cząstek stałych (PM) w spalinach silnika z zapłonem samoczynnym. Od kilku lat w Katedrze Silników Spalinowych Politechniki Krakowskiej prowadzone są próby nietypowych zastosowań analizatora cząstek stałych Horiba TEOM 1105. Niniejszy artykuł jest przeglądem wybranych przykładów takich zastosowań. Przedstawiono pomiary emisji cząstek stałych w spalinach silnika FSI zasilanego za pomocą bezpośredniego wtrysku benzyny oraz przypadki pomiarów emisji PM w gazach wylotowych śmigłowcowych silników turbinowych.
Horiba TEOM 1105 analyser is originally dedicated to the PM emission measurement in the diesel engine exhaust gas. For last several years in the Combustion Engines Chair of Cracow University of Technology the attempts of non-standard application of the Horiba TEOM 1105 analyser have been leading. The article is the review of chosen examples of such applications. The measurements of PM emission in the exhaust gas of FSI engine fuelled with direct gasoline injection and the cases of measurements of PM emission in the exhaust gases of helicopter turbine engines have been presented.
Źródło:: Combustion Engines; 2013, 52, 3; 670-676
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "engine gasoline" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język