Temat: diesel combustion - Katalog OPAC zbiorów

Skocz do pozycji: 1.

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

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Skocz do pozycji: 2.

Tytuł:: In cylinder pressure assessment from marine diesel engine
Autorzy:: Borkowski, T.
Kowalak, P.
Powiązania:: https://bibliotekanauki.pl/articles/242200.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine diesel engine
in-cylinder pressure analysis
combustion pressure measurement
Opis:: This paper explores the feasibility ofusing in-cylinderpressure-based variables in terms of certain class of errors, caused by indirect pressure measurement. Experimental direct in-cylinder measurement pressure setup was constructed, to make comparisons with standard indicator channel and indicator valve design. Zero-dimensional model was used for particular combustion system design. Subsequently, paper describes the application of a zero-dimensional combustion model for pressure signal analysis in cylinder head indicating passage of medium speed marine diesel engine. Recording of engine cylinder pressure development and its qualified evaluation is common aid for maintenance. Especially the outline of experimental test-bed, the injector nozzle equipped with piezoelectric pressure transducer, measurement system specification, B type uncertainty -mean angular speed characteristic, wavelet "denoising" setting and signals comparison, engine cylinder indicator model channel, cylinder pressure traces influenced by engine speed and load, cylinder pressure traces influenced by engine load and speed with two different indicator channel lengths, Indicated engine cylinder power in motoredmode of operation are presented in the paper.
Źródło:: Journal of KONES; 2009, 16, 3; 39-46
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Combustion pressure appraisal in marine diesel engine
Autorzy:: Borkowski, T.
Kowalak, P.
Marcinek, M.
Bonisławski, M.
Powiązania:: https://bibliotekanauki.pl/articles/247275.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine diesel engine
in-cylinder pressure analysis
combustion pressure measurement
Opis:: The practical design of the marine engine multi in-cylinder pressure acquisition system has been presented. The system operational properties and measurement methodology is aimed the online marine diesel engine applications. The design of engine combustion pressure recording system is based on piezoelectric sensors set that comprises quartz pressure element and charge amplifier, mounted on the indicator pipes, equipped with valves. The required crank degree signal is obtained from shaft encoder that is installed on the test bed engine shaft-line (free end of the hydraulic break). The encoder's TDC dedicated reference pulse is able generate simultaneously at the cylinder 1 and 6 in TDC position. The accuracy of the static crankshaft position calibration was evaluated. Additionally, a complex timing system was developed for individual cylinder TDC and crankshaft positioning definition. Before real time data acquisition starts, the number of engine cycles is defined for recording and the first pulse of each crankshaft revolution is used as trigger signal, so that all instantaneous pressure and crank angle signals acquisition can be started at the identical crankshaft position. The method provides required numbers of combustion cycles to be measured for time domain averaging and off line processing.
Źródło:: Journal of KONES; 2011, 18, 4; 25-32
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Możliwości eliminacji zakłóceń przy pomiarach ciśnień w komorze spalania silników okrętowych
Possibilities of Eliminating Inference at Pressure Measurements in Marine Diesel Engine Combustion Chambers
Autorzy:: Borkowski, T.
Kowalak, P.
Powiązania:: https://bibliotekanauki.pl/articles/360569.pdf
Data publikacji:: 2005
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: okrętowe silniki z zapłonem samoczynnym
indykowanie
proces spalania
czujniki ciśnienia
zakłócenia
OMiUO 2005
marine diesel engines
firing diagrams
combustion process
pressure transducers
interference
Opis:: Potrzeby wprowadzenia systemów monitoringu procesu spalania, wszystkich układów cylindrowych silników okrętowych przez cały okres eksploatacji stymulują rozwój techniki elektronicznego indykowania. Dane z systemów monitoringu mają służyć zaawansowanej diagnostyce pracy silnika. Złożone przetwarzanie sygnałów pomiarowych wymaga zastosowania precyzyjnych i efektywnych elementów przeciwzakłóceniowych. W artykule przedstawiono aspekty zastosowania filtrów elektronicznych w pomiarze ciśnień w komorze spalania.
In order to improve the reliability of the engine system, a new technology for engine control is needed. One of the methods used to meet this requirement is to develop a convenient and real-time measuring system. The equipment can be used in order to evaluate engine performance. Conventional calculations based on the pressure-volume diagram require a high-speed central processing unit (CPU) and a high accuracy measurement instrument. This paper presents some interference problems with combustion pressure measurement and analysis.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2005, 5 (77); 111-120
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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