Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "Diesel engine" wg kryterium: Temat


Tytuł:
On possible supplying ship diesel engines with alternative fuels (mixtures of diesel oils and vegetable oils or their esters). Preliminary report
Autorzy:
Krzyżanowski, J.
Witkowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/259181.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship diesel engine
alternative fuel oils
ecology
Opis:
The paper presents introduction to the research on possible supplying ship diesel engines with mixtures of diesel oils and vegetable oils or their esters with accounting for ecological aspects, i.e. exhaust gas purity. Characteristics of vegetable oils and their esters are compared with those of diesel oils; some consequenŹces of their application to diesel engines, mainly for their working process and exhaust gas content, are indicated. Also, influence of combusting their mixtures with diesel oils are discussed in the same context. Scope of the planned research project is shortly presented.
Źródło:
Polish Maritime Research; 2004, 4; 28-30
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A simulation model of energy distribution in ship combustion engine
Autorzy:
Nguyen, H.
Powiązania:
https://bibliotekanauki.pl/articles/259168.pdf
Data publikacji:
2005
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
computer simulation
ship diesel engine
dynamic processes
energy balance and distribution
Opis:
In the paper a model of energy flow and distribution in ship diesel engine cylinder was presented. This is a model of discrete parameters, being a continuation of the author s research on simulation of energy processing within ship main propulsion engine [2,3]. The model in question makes it possible to calculate energy flow values delivered and transferred during every working cycle of the engine cylinder. Results of application of the model for 6ZA40S Sulzer engine installed on B672 ship were also attached. The results were compared with results of test-stand measurements of the engine, performed at different load levels.
Źródło:
Polish Maritime Research; 2005, 1; 22-26
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A fatigue testing method of wet cylinder liner of diesel engines
Autorzy:
Kaźmierczak, A.
Kolanek, Cz.
Powiązania:
https://bibliotekanauki.pl/articles/247871.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engine
diesel engine
cylinder liner
fatigue
Opis:
It has been agreed to call the loads changing with time and acting in most varied constructional arrangements as well as the stresses accompanying them changeable or cyclic. Changeable stresses produce in the material a very complex entanglement of phenomena and changes depending on the value of those stresses and on the number of cycles. These are fatigue phenomena and changes. They develop successively till the element has been destroyed. This is called the element material fatigue. Thus changing loads and stresses are also called fatigue loads and stresses. The purpose of the presented work was to develop a method of comparative investigations for wet replaceable sleeves in direct contact with coolant that have been submitted to technological treatment of sub-edge zone material strengthening. The source of loads is a cyclically occurring normal component of gas and mass forces in the cylinder. The frequency of changes is a derivative of the number of strokes in the engine run and of the rotational speed of the crankshaft. Fatigue loads can be the reason why cylinder liner cracks in the edge zone. The results of the fatigue testing of the technological process of strengthening the cylinder lines sub-edge zone on crack sensitivity shows differences in the behaviour of particular samples, depending on the parameters of strengthening. The fatigue testing method can be used to evaluate the technological process of cylinder liner.
Źródło:
Journal of KONES; 2007, 14, 3; 287-290
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An effect of physical and chemical properties of commercial diesel fuels on engine parameters
Autorzy:
Sroka, Z. J.
Reksa, M.
Kułażyński, M.
Powiązania:
https://bibliotekanauki.pl/articles/242752.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engine
diesel engine
engine fuels engine performances
Opis:
This paper is focused on problem of quality of diesel commercial fuels in Polish market and an effect of their properties as well on engine parameters as environment The academic staff from Wrocław University of Technology put the own experience to the huge discussion by making research in the Wroclaw-city, where some probes of fuels were taken from six different commercial fuel stations. Chemical and physical properties of fuels were checked. A real diesel engine VW 1,9 TDI was investigated in university lab of Division of Motor Vehicles and Internal Combustion Engines. Typical engine performances were built including power, torque, fuel consumption, toxicity levels due to different fuels. The IC engine on the test bench, oxygen content in fuels, example of full load performance of VW1,9 TDI for fuel Bio D20-type, differences of mean effective pressure for different fuels, differences of carbon monoxide in exhaust for different fuels, differences of nitric oxides in exhaust for different fuels, differences of smog level in exhaust for different fuels, differences of heat release for different fuels, relation between engine torque and oxygen content in fuels vs. engine rotation are presented in the paper.
Źródło:
Journal of KONES; 2007, 14, 4; 447-452
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of acoustic emission in research of phenomenon occurring in high pressure fuel oil pipes of marine diesel engines
Zastosowanie emisji akustycznej w badaniach zjawisk zachodzących w przewodzie wtryskowym paliwa okrętowego silnika spalinowego
Autorzy:
Bejger, A.
Drzewieniecki, J.
Powiązania:
https://bibliotekanauki.pl/articles/258354.pdf
Data publikacji:
2007
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:
sygnał emisji akustycznej
diagnoza
silnik okrętowy
system wtryskowy
proces wtrysku
acoustic emission signal
diagnosis
marine diesel engine
injection system
injection process
Opis:
This article presents the possibilities of AE signal application in the diagnosis of the technical condition of marine diesel engines, while taking into consideration injection systems in the range of the evaluation of the repeatability of fuel injection pressure. It describes the phenomenon and characterized disturbances in the injection pipe and their influence on the AE signal changes. On the basis of results of the research, the analysis of the AE signal presenting the coarse of fuel pressure changes in the injection pipe and pump was done, and there were distinguished friction processes occurring in the precise pair of injection pump and field characterizing the flow out of fuel from injector.
W niniejszym artykule przedstawiono możliwości zastosowania sygnałów emisji akustycznej do diagnozowania stanu technicznego okrętowych silników spalinowych, ze szczególnym uwzględnieniem układów wtryskowych w zakresie oceny powtarzalności ciśnienia wtrysku paliwa. Omówione zostały zjawiska i scharakteryzowano zakłócenia zachodzące w przewodzie wtryskowym i ich wpływ na zmiany sygnału EA. W oparciu o wyniki badań dokonano analizy sygnału EA przedstawiającego przebieg zmian ciśnienia paliwa w przewodzie i pompie wtryskowej oraz wyróżniono procesy tarciowe zachodzące w parze precyzyjnej pompy wtryskowej i obszar charakteryzujący wypływ paliwa z wtryskiwacza.
Źródło:
Problemy Eksploatacji; 2007, 3; 25-31
1232-9312
Pojawia się w:
Problemy Eksploatacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of low temperature plasma nox control system for marine diesel engine
Autorzy:
Borkowski, T.
Myśków, J.
Hołub, M.
Kalisiak, S.
Powiązania:
https://bibliotekanauki.pl/articles/243384.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
marine diesel engine
exhaust emission gas treatment
low temperature plasma reactor
Opis:
The control of nox emissions from marine engines proves a challenge. Diesel engine manufacturers have been investigating a variety of methods with aim of reducing nox emissions. Currently, the plasma technology is undergoing rapid development in application to diesel engine exhausts. A combination of non-thermal plasma with catalysts can be referred to plasma assisted catalysts technology. This paper briefly describes research efforts aimed at non-thermal plasma reactor development for ship use with primary focus on NO oxidation condition. The part scale plasma reactor models have been designed and manufactured for the purpose of this trial. Exhaust emission plasma after-treatment module was fitted on exhaust outlet path of the marine test bed engine for fractional exhaust gas stream examination. Subsequently, the comprehensive series of trials were performed to assess the exhaust flow properties of the main exhaust channel and plasma reactor by-pass duct. Emission measurements were carried out on engine at steady-state operation. The NO reaction activity was a major task of the experiment and throughout the measurements, the engine outlet nox levels (NO and NO2) were monitored with simultaneous NO, NO2, N2O level recording after NTP reactor.
Źródło:
Journal of KONES; 2007, 14, 3; 91-99
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Energy - time method for assessment of main diesel engine operation
Autorzy:
Rudnicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/246378.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
ship power plants
diesel engine performance
reliability
Opis:
This paper presents a development of the known qualitative method for assessment of engine operation, applied to ship main diesel engine as an example. According to this interpretation engine operation can be presented as a physical quantity. In this aspect, based on the selected functional system of the engine, was assessed usefulness of the quantity for description reliability features of the system. To the analysis was applied Poisson's uniform process which made it possible to elaborate a model of run of worsening the considered system's operation taken as a random process of identical independent decreases of energy efficiency within a given time interval. The presented method is a valuable supplement for description reliability features of ship main engine what is important for realization of shipping tasks by sea. Additional advantage is versatility which makes that it can be applied to reliability analysis of any ship device or ship energy subsystem. Classification of the engine serviceability states with taking into account the assessment of its operation in energy-time aspect, schematic diagram of lubricating system of RTA48-TB engine and values of lubricating oil parameters in steady conditions for the engine load, graphical presentation of lubricating oil cooler operation graphical interpretation of the decreasing of oil cooler efficiency are presented in the paper
Źródło:
Journal of KONES; 2007, 14, 3; 519-526
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
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:
Identification of service failures of cylinder valves of ship piston combustion engines
Autorzy:
Korczewski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/260423.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
technical diagnostics
ship diesel engine
valve timing
Opis:
This paper presents selected diagnostic problems of charge exchange system of ship piston combustion engines. Theoretical background of wear process of cylinder valves was highlighted in the aspect of identification and sources of known and identifiable states of unserviceability. The presented results of endoscopic examinations concern failures of cylinder valves of the engines installed on Polish Navy ships.
Źródło:
Polish Maritime Research; 2007, 2; 19-26
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of engine speed and the course of the fuel injection characteristics on forming the average combustion temperature in the cylinder of turbo diesel engine
Wpływ prędkości obrotowej i przebiegu charakterystyki wtrysku paliwa na kształtowanie się średniej temperatury spalania w cylindrze doładowanego silnika z zapłonem samoczynnym
Autorzy:
Gustof, P.
Powiązania:
https://bibliotekanauki.pl/articles/374541.pdf
Data publikacji:
2007
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
silnik z zapłonem samoczynnym
wtrysk paliwa
temperatura spalania paliwa
turbo diesel engine
fuel injection
fuel combustion temperature
Opis:
Average combustion temperatures inside a turbo diesel engine for the same load and the same total doze of fuel for two rotational speeds: 2004 [rpm] and 4250 [rpm] are presented in this paper. The aim of this work is also the evaluation of the influence of the temporary course of the fuel injection characteristics on forming temperature in the engine cylinder space for these temperatures. The calculations were carried out by means of two zone combustion model .
W pracy zostały przedstawione obliczenia średniej temperatury spalania wewnątrz doładowanego silnika z zapłonem samoczynnym, dla tego samego obciążenia i tej samej sumarycznej dawki paliwa dla dwóch prędkości obrotowych: 2004[min"1] oraz 4250[min"1]. Celem realizowanej pracy była również ocena wpływu chwilowego przebiegu charakterystyki wtrysku paliwa na kształtowanie się temperatury w przestrzeni cylindra silnika dla tych prędkości. Obliczenia zostały przeprowadzone przy zastosowaniu dwustrefowego modelu procesu spalania.
Źródło:
Transport Problems; 2007, 2, 3; 5-10
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Marine diesel engine combustion influenced by injection nozzle and primary fuel atomization
Autorzy:
Borkowski, T.
Powiązania:
https://bibliotekanauki.pl/articles/243157.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
marine diesel engine
injection assembly
combustion and injection modelling
Opis:
In recent years modelling has been applied to investigation of mixture formation, fluid flow, combustion process and pollutant formation in diesel engines. In this study numerical simulation was carried out to investigate the effect of fuel spray characteristics in marine medium speed diesel engine - Sulzer 6A20/24D. 1-D and 3-D CFD fuel spray model was adopted for simulation of atomization and combustion process. For comparison purposes modelling outcome was set against experimental tests results. Operational validation of injection assembly model was performed according to standard marine engine test cycles. Injection pressure history for full load range of the engine has been experimentally established. Fuel oil supply system, test engine cylinder experimental setup, 1-D engine fuel injection assembly model and geometry of cam profile, measured nominal injection duration, comparison of calculated and measured injection pressures, calculated nominal injection process components shape, the cross section of velocity flow field for nominal injection phase and for nominal injection phase, the cross sections of velocity flow field in hole channel for nominal injection phase after cut-off and for nominal injection phase after cut-of, the cavitation-induced spray formation process in modelled combustion chamber are presented in the paper.
Źródło:
Journal of KONES; 2007, 14, 2; 45-54
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Marine diesel engine pistons instantaneous position experimental determination
Eksperymentalne wyznaczanie chwilowego położenia tłoka silnika okrętowego
Autorzy:
Kowalak, P.
Powiązania:
https://bibliotekanauki.pl/articles/258342.pdf
Data publikacji:
2007
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Eksploatacji - Państwowy Instytut Badawczy
Tematy:
okrętowy silnik spalinowy
szacowanie położenia
tłok TDC
marine diesel engine
diesel engines indication
piston TDC determination
Opis:
Przedstawiono eksperymentalne możliwości obserwacji ruchu tłoka poprzez skrzynię korbową silnika okrętowego. Wyznaczono charakterystyczne punkty położenia tłoka w czasie. opracowano metodę estymacji wystąpienia GMP tłoka na podstawie jego obserwowanych położeń. Zaproponowano model matematyczny umożliwiający szacowanie położenia dynamicznego GMP tłoka na podstawie obserwacji jego ruchu. Wykazano występowanie różnicy pomiędzy wystąpieniem GMP termodynamicznym, a GMP dynamicznym.
The experimental possibility of piston movement observation through the crankcase has been presented. The characteristic piston positioning points in the time domain have been determined. The piston TDC estimation methodology based on observed positioning points has been developed. A mathematic model for piston TDC estimation has been proposed. The difference between thermodynamic and dynamic TDC has been detected and presented.
Źródło:
Problemy Eksploatacji; 2007, 3; 113-120
1232-9312
Pojawia się w:
Problemy Eksploatacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of the heat load in the piston of turbo diesel engine - continuation
Modelowanie obciążeń cieplnych tłoka doładowanego silnika ZS - kontynuacja
Autorzy:
Gustof, P.
Hornik, A.
Jędrusik, D.
Powiązania:
https://bibliotekanauki.pl/articles/374585.pdf
Data publikacji:
2007
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
silnik z zapłonem samoczynnym
obciążenie cieplne silnika
COSMOS/M
metoda warunków brzegowych
metoda elementów skończonych
turbo diesel engine
heat load in engine
boundary conditions method
finite elements method
Opis:
In this study the mathematical description of characteristic surfaces of the heat exchange of the piston and temperature distribution of the turbo diesel engine at the beginning phase its work was presented. The computations were performed by means of the two-zone combustion model, the boundary conditions of III kind and the finite elements method (MES) by using of COSMOS/M program.
W niniejszym artykule przedstawiono matematyczny opis charakterystycznych powierzchni wymiany ciepła tłoka oraz rozkład ich temperatury dla doładowanego silnika, z zapłonem samoczynnym w początkowej fazie jego pracy. Obliczenia numeryczne zostały przeprowadzone przy zastosowaniu dwustrefowego modelu procesu spalania [1], warunków brzegowych III rodzaju oraz metody elementów skończonych (MES), za pomocą programu COSMOS/M.
Źródło:
Transport Problems; 2007, 2, 4; 81-86
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stochastic model of the load spectrum for main engines of sea-going ships
Autorzy:
Girtler, J.
Powiązania:
https://bibliotekanauki.pl/articles/243406.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
semi-Markov process
load
diesel engine
main engine
sea ship
Opis:
The paper presents possibility of applying the theory of semi-Markov processes for probabilistic description of load spectrum for diesel engines employed for ship propulsion, so for main engines. The considerations include output power characteristics for this kind of engines. The characteristics have enabled formulating a four-member set of states of the process of load on the engines. The theory of semi-Markov processes has been applied for describing the real process of loads on the mentioned engines. This theory has made possible building a model of the engine loads in form of a continuous-time semi-Markov process with a four-state set of values. Properties of a Darboux continuous function, which allow considering the engine loads as the discrete-states and continuous-time processes, have been used to build the model. In consequence a limiting distribution of the occurring process of successive states of engine loads could be determined. The distribution is the probabilities of staying a sea-going ship main engine in successive states of load. The distribution is characterized by the spectrum of loads on this kind of engines. The presented model can be developed by taking into account many states of the process of main engines loading as the need is to make such a probabilistic description of the process that provides possibility of rational control of the operating process.
Źródło:
Journal of KONES; 2007, 14, 3; 187-193
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of rapeseed oil blending with ethanol on engine performance and exhaust emissions
Autorzy:
Labeckas, G.
Slavinskas, S.
Pauliukas, A.
Powiązania:
https://bibliotekanauki.pl/articles/246446.pdf
Data publikacji:
2007
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
diesel engine
rapeseed oil (RO)
ethanol
effective parameters
emissions
smoke opacity
Opis:
The article presents the bench testing results of a four stroke, four cylinder, direct injection, unmodified, naturally aspirated diesel engine operating on neat rapeseed oil (RO) and its 2.5vol% (ERO2.5) and 7.5vol percent (ERO7.5) blends with ethanol. The purpose of the research was to investigate the effect of ethanol inclusion in the RO and preheating temperature on bio-fuel viscosity, engine brake power, specific fuel consumption, break thermal efficiency and emission composition changes, especially NO, NO2, NOx, CO, CO2, HC and smoke opacity of the exhausts. Inclusion in the RO 2.5 and 7.5vol% of ethanol the blend viscosity at ambient temperature of 20 centigrade diminishes by 9.2 and 28.3%. During operation under constant air-to-fuel equivalence ratio gamma = 1.6, blends ERO2.5 and ERO7.5 ensure the brake mean effective pressure (bmep) lower at the maximum torque 1800 min-1 by 0.5 and 2.3% (bmep=0.770 mpa) and at rated 2200 min1 speed by 2.4 and 9.1% (bmep=0.740 mpa), correspondingly, than that of neat RO case. The bsfc at maximum torque (248.7 g/kwh) and rated power (247.5 g/kwh) for blends ERO2.5 and ERO7.5 is higher by 1.3-4.4% and 4.2-10.7% and the brake thermal efficiency lower by 0.5-1.5% and 3.3-7.6%, respectively. The tests revealed that during operation of the fully loaded engine at rated 2200 min-1 speed, ethanol inclusion in the RO up to 7.5vol% diminishes NO, nox, HC, CO2 emissions, smoke opacity and temperature of the exhausts however it may increase simultaneously NO2, NO2/NOx and CO emissions.
Źródło:
Journal of KONES; 2007, 14, 3; 331-338
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies