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Wyszukujesz frazę "compression ignition engines" wg kryterium: Wszystkie pola


Tytuł:
DME as alternative fuel for compression ignition engines - a review
Autorzy:
Stepanenko, Denys
Kneba, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/133674.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
alternative fuels
dimethyl ether
DME
internal combustion engine
emission reduction
paliwa alternatywne
eter dimetylowy
tłokowy silnik spalinowy
redukcja emisji
Opis:
The ecological issues and the depletion of crude oil, has led the researchers to seeking for non-petroleum based alternative fuels, along with more advanced combustion technologies, and after-treatment systems. The use of clean alternative fuels is the one of the most perspective method that aiming at resolving of the said issues. One of the promising alternative fuels that can be used as a clean high-efficiency compression ignition fuel with reduced of toxic emissions is dimethyl ether (DME). Moreover, it can be produced from various feedstocks such as natural gas, coal, biomass and others. This article describes the properties and the potential of DME application on the combustion and emission reduction characteristics of the compression ignition engines.
Źródło:
Combustion Engines; 2019, 58, 2; 172-179
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ECU calibration for gaseous dual fuel supply system in compression ignition engines
Autorzy:
Stepanenko, Denys
Kneba, Zbigniew
Powiązania:
https://bibliotekanauki.pl/articles/2097470.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
compression ignition engine
ECU calibration
dual fuel mode
alternative fuels
emission reduction
silnik o zapłonie samoczynnym
kalibracja ECU
tryb dwupaliwowy
paliwa alternatywne
ograniczenie emisji
Opis:
The dual fuel (DF) combustion mode is proven solution that allows to improve or get at the same level engine performance and reduce toxic compounds in exhaust gases which is confirmed by researchers and end-users. DF combustion mode uses two fuels gaseous fuel as a primary energy source and a pilot quantity of diesel fuel as ignition source. However, in order, to fully take advantage of the potential of the dual fuel mode, DF system must be proper calibrated. Despite the existence of commercial control systems for dual fuel engines on the market, the literature on the important parameters for the engine's operation introduced during calibration is scarce. This article briefly describes a concept of working algorithm and calibration strategy of a dual fuel electronic control unit (ECU) The purpose of calibration is to achieve the greatest possible use of an alternative gaseous fuel without causing accelerated engine wear.
Źródło:
Combustion Engines; 2020, 59, 3; 33--37
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of possibilities to improve environmental operating parameters of modern compression – ignition engines
Autorzy:
Osipowicz, Tomasz
Abramek, Karol Franciszek
Barta, Dalibor
Droździel, Paweł
Lisowski, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/957973.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
fuel injector
compression-ignition engine
diesel fuel
dehydrogenation of hydrocarbons
wtrysk paliwa
silnik wysokoprężny
olej napędowy
odwodornienie węglowodorów
Opis:
The aim of this study was to analyse the possibilities of improving the ecological parameters of compression – ignition CI engines. During the analysis of exhaust gas, attention was mainly paid to the emission of nitrogen oxides and carbon black soot. A method was proposed to reduce the above chemical elements in CI – engine exhaust fumes by using the annular channels on the non-working part of the fuel injector needle and applying a platinum catalyst on them. The task of these annular channels is to mix and agitate the fuel before injection to the combustion chamber and to enlarge the contact surface area of catalyst. The task of catalytic coating is to initiate the reaction of dehydrogenation of paraffinic hydrocarbons to olefinic ones with a free hydrogen molecule. Hydrogen, owing to its properties, can shorten the period of delay of spontaneous ignition of combustible mixture in the engine combustion chamber, which affects the entire combustion process and improves the ecological parameters of a CI engine.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 2; 206-213
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of fuel atomization quality in compression ignition engines using acoustic emission signal
Autorzy:
Klyus, Oleh
Rajewski, Przemysław
Lebedevas, Sergeus
Olszowski, Sławomir
Powiązania:
https://bibliotekanauki.pl/articles/2202516.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
Diesel engines
fuel injection
atomization
Sauter mean diameter
acoustic emission
silnik Diesla
wtrysk paliwa
atomizacja
średnia średnica Sautera
emisja akustyczna
Opis:
The analysis of fuel injection processes in diesel engines showed the convergence of physical parameters affecting the mean diameter of the Sauter SMD (selected as a spray quality parameter) of the atomized fuel droplets and the parameters of the acoustic signal emission originating from the spring waves accompanying the atomization process. In experimental studies, the laser diffraction method was used to measure the atomization quality with the Malvern Spraytec device. For the acoustic signal recording and processing there was used the measurement set with a Fujicera 1045S sensor. The correlation between the values of the Sauter diameter and the energy of the acoustic signal has been obtained on the basis of which a method has been developed to assess the quality of fuel atomization in compression ignition engines by measuring the acoustic signal recorded during the fuel injection process.
Źródło:
Combustion Engines; 2022, 61, 4; 83--91
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of emission level of biofuels from waste-free production in compression-ignition engines
Autorzy:
Kurczyna, D.
Kołodziejczyk, K.
Sznyr, J.
Kruczyński, S. W.
Orliński, P.
Wojs, M. K.
Powiązania:
https://bibliotekanauki.pl/articles/245261.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
biodiesel
waste-free production technology
exhaust emission
Opis:
This article presents the impact of biofuel for compression-ignition engines, produced with the use of innovative production technology, on the emission of toxic substances. The innovative production technology of biodiesel does not generate by-products, eliminating the need for development glycerol fraction and toxic methanol, substances inconvenient for environment. This technology is not currently well known and not used on an industrial scale. The essence of this technology is to carry out the transesterification of triglycerides and methyl acetate in special conditions and with using an alkaline catalyst. The only product of this technology is a mixture of fatty acid methyl esters and glycerol triacetate (no by-products). In the first part of the article, selected physical and chemical properties of such biofuel in comparison to the limits specified in the standard quality requirements for this type of products (EN 14214) were discussed. In the next part, the results of empirical studies were evaluated, showing the influence of speed and load conditions in test engine Perkins 1104C-E44TA on concentrations of harmful components in the exhaust gases such as carbon monoxide, nitrogen oxides, hydrocarbons, particulates. Engine tests were performed with using biofuels selected by the authors. The measurement system, consisted of an AVL CEB II gas analyser and MEXA-1230PM device for measure of particulate matter in real time, to measure the concentrations of toxic exhaust components was used. Based on the concentration of toxic components of exhaust gases according to Test C1 according to ISO 8178, the emission of the above-mentioned normalized toxic components of exhaust gases was determined. In the final part of the article, the results of empirical studies on the concentrations of toxic exhaust gases in the linear-point diagrams, and emission in the bar chart diagrams were presented.
Źródło:
Journal of KONES; 2016, 23, 1; 185-191
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The properties of mixtures of FAEE diesel and ethanol used to power compression ignition engines
Autorzy:
Piętak, A.
Duda, K.
Chraplewska, N.
Ambrosewicz, M.
Struś, M.
Powiązania:
https://bibliotekanauki.pl/articles/245969.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
biodiesel
combustion engines
air pollution
biofuels examination
biofuel mixtures
ethyl esters
Opis:
Due to the continuous increase in prices of conventional fuels, the production of biofuels on an industrial, as well as small scale, nowadays is becoming more economically efficient. However, the usage of biofuels in its pure form is a problem when one have to supply them with modern injection systems. Due to the difference in parameters of biofuels in comparison with conventional fuels, the attempt to develop a mixture of optimal parameters for use in diesel engines, equipped with modern injection system, was made. Fuels derived from substrates which are produced independently of food production and which can energize CI engines are occupying now stronger market positions. Easier access to know-how and an uncomplicated production process result in technological development, not only in mass-scale plants but also in smaller devices which meet the needs of individual users or in which residues of other processes are neutralized or reused13 samples were tested, mixed of diesel, FAEE and ethyl alcohol. The mixtures were prepared and tested in The Department of Mechatronics in University of Warmia and Mazury for the most important parameters in the evaluation of possibility of usage to power modern compression ignition engines.
Źródło:
Journal of KONES; 2013, 20, 4; 341-347
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the potential of dimethyl ether as an alternative fuel for compression ignition engines
Autorzy:
Smolec, R.
Idzior, M.
Karpiuk, W.
Kozak, M.
Powiązania:
https://bibliotekanauki.pl/articles/133723.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
dimethyl ether
DME
alternative fuels
common rail
biofuel
eter dimetylowy
paliwa alternatywne
biopaliwa
Opis:
The main problem that the automotive industry has been dealing with since the beginning of the XXI century is the need to reduce the exhaust emissions from piston combustion engines. Another, not at all less important problem is the depleting natural resources of crude oil. There are many concepts aiming at resolving of the said issues. One of them is the possibility of application of dimethyl ether (DME) in a classic engine. The paper characterizes this fuel, drawing attention to the aspects related to the adaptation of the engine to this type of fuel, presents the process of its atomization and relevant exhaust emissions.
Źródło:
Combustion Engines; 2017, 56, 2; 181-186
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The flexibility of compression-ignition engines of Scania trucks
Elastycznosc silnikow o zaplonie samoczynnym samochodow Scania
Autorzy:
Myslowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/793765.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
engine
flexibility
Scania engine
motor vehicle
combustion
compression
ignition engine
dynamic property
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 1
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correlation investigations into pollutant emission and the operational states of compression-ignition engines in dynamic tests
Autorzy:
Chłopek, Z.
Lasocki, J.
Powiązania:
https://bibliotekanauki.pl/articles/133684.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
combustion engines
pollutant emission
correlation analysis
silniki spalinowe
emisja zanieczyszczeń
analiza korelacji
Opis:
This study investigates the correlation dependences between pollutant emission intensity and the engine operational states determining these properties, in various conditions, both in relation to measurements of engine operational states and their dynamic nature. The research was carried out in a variety of dynamic tests. Investigations into the correlations of processes occurring in combustion engines make it possible to assess the impact of one process on another and the relationship between the various processes. In general, it was found that similar dependencies occur for carbon monoxide and hydrocarbons, but were often substantially different for nitrogen oxides.
Źródło:
Combustion Engines; 2017, 56, 2; 87-92
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Decomposition of harmonic wavelets of torsional vibrations as basis for evaluation of combustion in compression-ignition engines
Autorzy:
Dereszewski, M.
Drewing, S.
Powiązania:
https://bibliotekanauki.pl/articles/243609.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
diagnostics
diesel engine
torsional vibrations
signal processing
Opis:
The aim of analysis presented in the article is results of measurements of torsional deflections of a crankshaft of three-cylinder internal combustion diesel engine. The wavelets of the run of torsional twists were processed by decomposition to harmonics using FFT. In order to exactly recognize all dynamic aspects of gas forces acting during working stroke, decomposition was done in two ways: first one relaying on records encompassing one working cycle (two revolutions), the second one based at separated periods encompassing angular an interval from TDC (Top Dead Centre) of one cylinder to TDC of subsequent in firing order. For three-cylinder engine, width of the interval is 240 degrees of crank angle. In order to obtain reliable results, torsional deflection signals acquisitions were recorded numerous times including changes of outer conditions (temperature, atmospheric pressure) and different values of the engine loads. The main goal of conducted experiments was looking for an answer of a question if exist any differences between frequency spectrums of harmonics of run of full cycle ( two revolutions) and the same cycle divided by three separate intervals. Analysis was conducted in order to state any possibility of diagnostic signals acquisition caused by abnormalities of combustion process. Results were presented in form of comparison of frequency spectra taken from full cycle and divided intervals.
Źródło:
Journal of KONES; 2018, 25, 3; 129-135
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Knock combustion in dual fuel turbocharged compression ignition engines
Spalanie stukowe w turbodoładowanym dwupaliwowym silniku o zapłonie samoczynnym
Autorzy:
Róźycki, A.
Powiązania:
https://bibliotekanauki.pl/articles/245368.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
spalanie stukowe
dwupaliwowy silnik o zapłonie samoczynnym
amplituda drgań głowicy
sprężony gaz ziemny
knocking combustion
gaseous fuel
dual-fuel compression ignition engine
cylinder head vibrations
Opis:
The paper describes some results of examination of dual fuel turbocharged compression ignition engine, which verify possibility of occurring of knock combustion. The first stage of examination was done with the use of standard fuel system. Dual fuel system was used in the second stage. Diesel provided by common rail system was used for ignition of natural gas, which was treated as a main fuel. The fluctuation of the cylinder pressure and engine head vibration was registered for characteristic points of engine run (maximum torque, maximum power, maximum engine efficiency). The spectrum of vibration of engine head was analyzed. Analysis is based on application of Fast Fourier Transform for calculation of characteristic frequency and maximum values of module of transform. Moreover the factors of knock intensity were calculated. The results ofanalysis confirmed previous results which shown that during combustion in CI engine fluctuation of pressure appear. The fluctuation cause vibration of engine head but frequency of the vibration is characteristic for knock combustion. Characteristic frequency doesn 't depend on gas fuel rate in total fuel, which is provided to the cylinder. The magnitude, which changes is maximum of amplitude of vibration. The results of calculation of knock combustion intensity factor, which is based on maximum of amplitude of engine head vibration shown its suitability for identification of knock combustion.
W artykule opisano wyniki badań weryfikujących możliwość wystąpienia spalania stukowego Drży dwupaliwowym zasilaniu pelnogabarytowego turbodoładowanego silnika o ZS. Pierwszy etap badań przeprowadzony był przy standardowym zasilaniu silnika. W drugim etapie badań silnik zasilany był układem dwupaliwowym. Paliwem inicjującym samozapłon ładunku był olej napędowy podawany przez układ common rail. Paliwem podstawowym był gaz ziemny (CNG). Rejestrowane były zmiany ciśnienia w cylindrze i drgania głowicy w charakterystycznych punktach pracy silnika (maksymalny moment, maksymalna moc i maksymalna sprawność silnika). Analizie poddano widma drgań głowicy w okresie spalania. Analiza polegała na zastosowaniu szybkiej transformaty Fouriera do obliczenia charakterystycznych częstotliwości i wartości maksymalnych modułu transformaty. Ponadto wykonano obliczenia wskaźników intensywności stuku. Wyniki analiz potwierdziły wcześniejsze badania, z których wynikało, że w silniku o zapłonie samoczynnym w okresie spalania występują pulsacje ciśnienia wywołujące drgania głowicy o częstotliwości charakterystycznej dla spalania stukowego. Częstotliwość ta występuje niezależnie od udziału paliwa gazowego w ładunku dostarczanym do cylindra. Wielkością, która ulega zmianie jest maksymalna amplituda pulsacji. Wyniki obliczenia wskaźnika intensywności spalania stukowego opartego na maksymalnej amplitudzie drgań głowicy wykazały jego przydatność do identyfikacji spalania stukowego.
Źródło:
Journal of KONES; 2009, 16, 4; 393-400
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Possibility of use a small fraction of rape seeds for the production of biofuels for compression ignition engines
Autorzy:
Tańska, M.
Ambrosewicz-Walacik, M.
Nitkiewicz, S.
Powiązania:
https://bibliotekanauki.pl/articles/247821.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
rape seeds
size
physical properties
chemical properties
biofuel production
Opis:
The aim of the study was to determine the possibility of using small seeds of rape (diameter <1.6 mm,) perceived as a raw material of inferior nutritional quality, for the biofuels production. Research material was samples of industrial mass of rapeseeds originating from three Polish regions. The seed mass was cleaned in a sieve separator, removing mineral matter (stones), cereal grains, stems and dusts. Then, the sample was sifted through a set of sieves and two fractions were received: seeds with diameter >1.6 mm – sample F1 and with diameter < 1.6 mm – sample F2. Each fraction was characterized by its share in bulk mass, moisture content, 1000 seeds weight, yield of pressing, fat content and phosphorus content. Cold-pressed oils were determined in terms of total and unhydrated phosphorus content, acid value and fatty acids content. Fractionation by weight rapeseeds with using an industrial sieve separation may provide a simple method for improving the technological value of the raw material used for food purposes, and thus obtain fine seed that could be intended exclusively for the production of technical oil. Despite the stated inferior quality of small seeds, it was found that the increased values of some discriminants would not have impact on the technology of biofuel production and cost of production.
Źródło:
Journal of KONES; 2016, 23, 1; 391-395
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of the total efficiency for engine with spark - ignition and compression - ignition
Autorzy:
Cygnar, M.
Budzik, G.
Powiązania:
https://bibliotekanauki.pl/articles/246712.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
two fuel injection systems
spark-ignition
compression-ignition engines
Opis:
This paper presented of developing a power system for two fuel injection systems – spark ignition and compression ignition. Two ways to initiate combustion process were used: initially the spark ignition, and after it turns off - the combustion is initiated by the injection of ignition injected fuel. The composition of the ignition dose was developed through the research conducted in order to adjust the right proportions of chemical components to obtain the best parameters of the combustion process. The study considered the performance of the ignition dose injected into the engine cylinder and its evaporation process, the charge stratification, the formation of toxic emission and the total efficiency of the engine. Experimental studies were carried out on a test engine equipped with two injection systems and automatic mode change control management. The scope of research included: – determining the basic characteristics of the engine operation, taking into account the injection advance angle of the ignition dose, – comparative studies of engine performance and exhaust gas composition, working with spark ignition and initiated by compression ignition of the ignition dose, – determining the increase in the general efficiency of the two-circulation engine working with injection of ignition dose compared to conventional power system with the initiation of combustion process from the spark plug.
Źródło:
Journal of KONES; 2013, 20, 1; 41-48
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Study of the Compression Ignition Engine Performance Using Various Bio Diesel Blends
Autorzy:
Adaileh, Wail
Powiązania:
https://bibliotekanauki.pl/articles/2201786.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
biodiesel
compression ignition engines
engine performance
waste cooking oils
Opis:
The purpose of this study is to experimentally investigate the performance of compression ignition engine using a biodiesel extracted from waste cooking oils (WCO), such as, falafel frying palm oil, chicken frying soybean oil, and fresh oils, such as soybean and olive oils. After producing biodiesel from WCO and fresh oils, the mixtures were blended with pure diesel in two percentages as follows: B20 (20% biodiesel from each type, 80% pure diesel) and B10 (10% biodiesel from each type, 90% pure diesel). The biodiesel blends were used as an alternative fuel for diesel engine. The ignition performance of the fuel blends was compared with that of pure diesel B00 (0% biodiesel, 100%pure diesel). To analyze the effect of biodiesel on engine performance, the engine was operated at variable load from 0 to 6 kW and constant speed at 2000 RPM. For engine performance, brake power, brake specific fuel consumption and brake thermal efficiency were analyzed. The results showed that pure diesel produces higher brake force (BP) than all biodiesel blends. The highest value for brake specific fuel consumption (BSFC) at variable load is for B20-F (20% biodiesel from falafel frying oil, 80% pure diesel) is equal to 0.243426 gm/kW.s. The highest value for brake thermal efficiency (BTE) is for B10-S (10% biodiesel from soybeans oil, 90% pure diesel) is equal to 27.6%.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 4; 29--37
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The concept of research on ecological, energy and reliability effects of modified marine fuel oils application to supply compression-ignition engines in real conditions
Autorzy:
Korczewski, Z.
Marszałkowski, K.
Rudnicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/133741.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
compression ignition engine
modified marine fuel oils
laboratory research test bed
concept of research implementation
silnik o zapłonie samoczynnym
zmodyfikowane paliwo okrętowe
Opis:
Within the article, basic assumptions of the research project financed by Regional Fund for Environmental Protection and Water in Gdansk were described. The project concerns the experimental investigations carried out on laboratory compression-ignition engine in conditions of its supply with a non-standard marine fuel oil. Configuration and measuring capability of laboratory test bed presently being constructed were introduced. The concept of engine tests implementation as well as a general outline of research methodology was characterised. After being accepted by Polish Committee for Standardization they could become an effective and efficient verification tool for various types of modified fuel oils introduced on the market, both for the maritime administration offices and shipyards as well as ship owners in operation.
Źródło:
Combustion Engines; 2017, 56, 4; 56-61
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł

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