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Wyszukujesz frazę "Diesel engine" wg kryterium: Temat


Tytuł:
Potential non-toxic aqueous emulsion as a diesel fuel
Autorzy:
Haller, P.
Jankowski, A.
Kolanek, C.
Walkowiak, W.
Powiązania:
https://bibliotekanauki.pl/articles/244342.pdf
Data publikacji:
2015
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
emulsions
water
diesel engine
nitrogen oxides
emissions
Opis:
Natural processes occurring on Earth (fires, volcanic eruptions) and human activity in the area of acquisition and processing of energy, is the cause of the continuous contaminating the atmosphere of combustion products. The combustion of fuels is and will be in the near future primary means of generating energy, including for transportation purposes. Transport is the cause of many environmental threats - emits dust and particles along with many of gaseous harmful substances and also noise and vibration. Power sources used for transport are almost exclusively equipped with internal combustion engines, among which is dominated by a diesel engines. In view of the known advantages of these motors such as high efficiency and relatively low emissions of toxic compounds in the exhaust gas, they have been accepted as the most preferred source of power motor vehicles in the coming decades, assuming that meet the requirements of future regulations regarding environmental protection. The problem to be solved in internal combustion engines is the emission of nitrogen oxides. In this paper are contained an overview of proven methods and results in the reduction of nitrogen oxides in exhaust gases by means of emulsion fuels, and forming an opinion concerning of the usefulness of such solutions in the future.
Źródło:
Journal of KONES; 2015, 22, 3; 43-48
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stężenie i rozkład wymiarowy cząstek spalin silników Diesla w powietrzu w garażu
Concentration and size distribution of Diesel fume particles in garage air
Autorzy:
Jankowska, E.
Pośniak, M.
Powiązania:
https://bibliotekanauki.pl/articles/179374.pdf
Data publikacji:
2010
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
silnik Diesla
spaliny
diesel engine
exhaust gases
Opis:
W artykule przedstawiono wyniki badania stężeń i rozkładu wymiarowego cząstek spalin silników Diesla w powietrzu w trzech przypadkach powszechnie występujących podczas prac wykonywanych w garażu. Podano również wyniki badania stężenia masowego w odniesieniu do frakcji wymiarowych cząstek PM10, PM2,5, PM1, PM0,5 i PM0,25. Badania wykazały, że spaliny z silników Diesla zawierają przede wszystkim cząstki drobne: 95-99% cząstek poniżej 2,5 µm; 91-98% poniżej 1 µm; 87-96% poniżej 0,5 µm i 66-77% cząstek poniżej 0,25 µm.
This article presents the results of an investigation of the concentrations and size distribution of particles of Diesel fumes suspended in the air in three cases common during work done in a garage. The article also presents the results of an investigation of mass concentrations in relation to size fraction particles PM10, PM2.5, PM1, PM0.5 and PM0.25. Investigations showed that Diesel fumes contained first of all fine particles: 95-99% particles below 2.5 µm, 91-98% below 1 µm, 87-96% below 0.5 µm and 66-77% particles below 0.25 µm.
Źródło:
Bezpieczeństwo Pracy : nauka i praktyka; 2010, 1; 23-27
0137-7043
Pojawia się w:
Bezpieczeństwo Pracy : nauka i praktyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Selected physicochemical properties of water-fuel microemulsion as an alternative fuel for diesel engine
Autorzy:
Górska, Milena
Bukrejewski, Paweł
Stobiecki, Jerzy
Powiązania:
https://bibliotekanauki.pl/articles/262891.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
microemulsion
alternative fuel
diesel engine
environmental protection
Opis:
The paper focuses on the assessment of selected physicochemical properties of microemulsion containing 5% by mass (m/m) of surface active compounds (SAC), i.e. Span20 and Crilet4 as well as 10% (m/m) of distilled water dispersed in diesel fuel (DF). In particular temperature dependent properties such as: flash point (FP) and cold filter plugging point (CFPP) as well as lubricity, friction coefficient, corrosiveness and kinematic viscosity of tested fuels were examined. It was found that the tested surfactants and water added to DF increase microemulsion FP by 13ºC. For this reason, it can be stated that tested microemulsion is safer than typical DF. On the other hand it was found that the CFPP of the tested microemulsion is also adequately higher. It means less usefulness of such fuel during winter periods. Based on the research results it can be stated that addition of tested surfactants slightly worsens the lubricity of DF. However, the same surfactants in the presence of dispersed water reduce the friction in the tribological node and improve the lubricity of the tested microemulsion. Research showed that tested microemulsion system is not corrosive as well as its kinematic viscosity meet requirements of EN590 standard. Based on all these findings, microemulsion is considered as safe and such fuel can be recommended for engine tests without the risk of its damage.
Źródło:
Archiwum Motoryzacji; 2019, 84, 2; 45-56
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
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
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of diesel oil improvers on indices of atomisation and combustion in high-efficiency engines
Autorzy:
Pielecha, I.
Pielecha, J.
Skowron, M.
Mazanek, A.
Powiązania:
https://bibliotekanauki.pl/articles/259914.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
diesel oil
diesel engine
improvers
fuel injection
fuel combustion
Opis:
The process of fuel combustion in a diesel engine is determined by factors existing during liquid fuel injection and atomisation. The physicochemical properties of the fuel to a large extent decide upon the quality of this phase of cylinder fuelling. So it is important to ensure appropriate properties of a fuel affecting its atomisation and, as a result, combustion. The paper deals with the topic of diesel oil improvers and the analysis of their influence on atomisation and combustion indices. In the studies base diesel oil and a diesel fuel improved by a package of additives, were used. The process of conventional and improved fuel injection was analysed by using optical examinations. The amount of released heat was evaluated during the studies carried out on combustion. Significant aspects of the applied improvers in relation to fuel injection and its combustion have been indicated.
Źródło:
Polish Maritime Research; 2017, 3; 99-105
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
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
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental Investigation on Indicated Pressure and Heat Release for Direct Hydrogen Injection in a Dual Fuel Diesel Engine
Autorzy:
Siadkowska, Ksenia
Barański, Grzegorz
Sochaczewski, Rafał
Wendeker, Mirosław
Powiązania:
https://bibliotekanauki.pl/articles/2201773.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
diesel engine
direct hydrogen injection
dual fuel
combustion engine
Opis:
This paper presents the research results for a diesel and hydrogen fueled engine. The research object is a four-cylinder, four-stroke ADCR engine with a displacement of 2,636 cm3. In the experiments, glow plugs were replaced with compressed hydrogen injectors and a special adapter. Hydrogen was supplied directly into a combustion chamber using a test injector. A hydrogen dose in the tests was changed at selected test points and ranged from 0 to 160 dm3/min. The research were conducted at 1,500 rpm. A hydrogen injection start angle and maximum hydrogen dose were specified from the preliminary experiments. The following parameters were analyzed: indicated mean effective pressure, maximum pressure, crank angle of maximum cylinder pressure occurrence and heat release. The obtained results were statistically analyzed. The conducted analysis focused on determining whether there are significant differences between early and late injection and how these changes affect the measured parameters.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 3; 54--66
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FEM Simulation of Different Engine Mount Models in an Aircraft Piston Diesel Engine
Autorzy:
Magryta, Paweł
Pietrykowski, Konrad
Borowiec, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2204049.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
engine mount
diesel engine
aircraft
FEM
finite element method
Opis:
The article presents the results of numerical simulations using the FEM (Finite Element Method) of the engine mount strength for mounting an aircraft diesel engine with opposite pistons called PZL-100. Four versions of the mount prepared by aircraft engine producer WSK "PZL-Kalisz" company were analyzed. Tests were performed in Catia v5 software in the Generative Structure Analysis module. The boundary conditions were engine gravity force, propeller thrust force, and propeller torque. S235JR steel was defined as the material. A design grid with tetrahedral elements with a single element size of 2 mm was used. As part of the simulation study, four structural solutions for the test engine mounts were calculated in terms of strength. The results of stress maps and the magnitude of deformation of the mount elements were compared. Based on the obtained results, one of the mount versions was recommended for actual fabrication.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 5; 230--241
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Termodinamicheskaja vozmozhnost povyshenija ehffectivnosti DVC
Thermodynamics possibility of increase of efficiency of combustion engines
Autorzy:
Podznoev, G.
Abdulgazis, Y.
Zharik, T.
Powiązania:
https://bibliotekanauki.pl/articles/78218.pdf
Data publikacji:
2013
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
combustion engine
diesel fuel
exhaust gas
diesel engine
pollutant emission
heat regeneration
Opis:
A thermodynamic analysis of the possibility of catalytic reforming of water emulsified diesel fuel by the heat of the exhaust gases. The results indicate the potential for a significant increase in efficiency of a diesel engine with a substantial improvement in the quality of the kinetics and combustion and a significant reduction of pollutant emissions in the exhaust gases. Calculations confirmed a significant reduction in consumption of primary diesel fuel, while maintaining the amount of useful work
Źródło:
Motrol. Motoryzacja i Energetyka Rolnictwa; 2013, 15, 5
1730-8658
Pojawia się w:
Motrol. Motoryzacja i Energetyka Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zużycie i możliwość diagnozowania wybranych elementów układu wtryskowego silników okrętowych
The wear and the possibility of condition monitoring of selected elements of injection system of marine diesel engines
Autorzy:
Bejger, A.
Powiązania:
https://bibliotekanauki.pl/articles/327678.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
emisja akustyczna
układ wtryskowy
zużycie
silnik wysokoprężny
silnik okrętowy
acoustic emission
injection system
wear
diesel engine
marine diesel engine
Opis:
W artykule przedstawiono typowe rodzaje zużycia układu wtryskowego na tle innych układów funkcjonalnych silników okrętowych. Przedstawiono możliwość zastosowania sygnałów emisji akustycznej (EA) do diagnozowania procesu wtrysku. Wykazano, że w częstotliwości około 12 - 16 kHz można wyodrębnić "czyste" sygnały odzwierciedlające pracę wtryskiwacza i układu przepłukania. Częstotliwość rzędu 8 - 16 kHz bardzo dobrze uwidacznia procesy tribologiczne zachodzące w pompie wtryskowej.
Typical wear cases of fuel injection system, in confrontation with other main functional systems of the marine diesel engine are presented in the paper. The possibility of apply the acoustic emission signals for condition monitoring of injection process and the operation of injection pump and injector are presented. There is shown, that in the frequency of 12 - 16 kHz is possibility to separate signals depended from operation and condition of injector and scavenge. The frequency of 8 - 16 kHz superbly reflect the tribological processes of fuel injection pump.
Źródło:
Diagnostyka; 2006, 4(40); 47-50
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exhaust gas toxicity problems in ship drives
Autorzy:
Kolanek, C.
Sroka, Z. J.
Walkowiak, W. W.
Powiązania:
https://bibliotekanauki.pl/articles/963451.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
inland navigation
diesel engine
fuel cell
emission
standards
Opis:
The issues discussed in the article include exhaust gas emission, purity requirements and standards, methods of reducing the emission of harmful exhaust gas components, and alternative and future traction drive sources having the form of fuel cells. The discussion often refers to the situation of road transport, a subsystem which severely affects the environment and thus is obliged to intensify the search for solutions.
Źródło:
Polish Maritime Research; 2007, S 1; 46-52
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving physical properties of rape biofuels
Autorzy:
Kiernicki, Z.
Powiązania:
https://bibliotekanauki.pl/articles/102549.pdf
Data publikacji:
2012
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
alternative fuel
diesel engine
fuel composition
FAME
polyolefin
Opis:
The researches on the use of biodiesel and fuel derived from waste plastics are presented in the paper. Biodiesel and fuel obtained from waste plastics were both used as fuel components. FAME is a bio-admixture in the fuel. The catalytic cracking of polyolefin was the source of second fuel admixture. The physical properties of the analyzed components of fuel have been presented. The operational parameters of direct injection in diesel engines fuelled by tested fuel blends was set out. The preparation of the fuel mixture was also described. The concept of the diesel fuel which is made from the components of opposite physical properties could have a positive practical effect and could improve the use of biofuels.
Źródło:
Advances in Science and Technology. Research Journal; 2012, 6, 16; 48-54
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
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
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
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
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
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
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł

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