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Wyszukujesz frazę "Lotko, W." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Preliminary research of the diesel knock phenomenon with using of the crankshaft acceleration method
Autorzy:
Górski, K.
Lotko, W.
Powiązania:
https://bibliotekanauki.pl/articles/242350.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
diesel knock
transient conditions
combustion process
acceleration method
wavelet transform
alternative fuels
Opis:
Paper presents an experimental study on the pressure variations inside of 3 - cylinder, a direct injection AD3.152 type diesel engine. The main aim of the preliminary engine test was to use of the crankshaft free acceleration method for detection of diesel knock phenomenon. For this research, each combustion chamber was equipped with AVL cooled pressure sensor mountedat the top of engine head. Using of such sensors and special prepared at Technical University of Radom data acquisition system allow to record time histories of in-cylinder pressure variations at conditions of free acceleration of the engine crankshaft. Results presented in this paper show, that such transient engine conditions can be successfully used for detection of diesel knock phenomenon. High frequency pressure oscillations, typical for knocking were observed in the first phase of the acceleration process for selected combustion chambers. Experimental tests have been done for engine fuelled with regular diesel oil (DF) and its blend with Ethyl Tert Butyl Ether (ETBE) used as an oxygenated additive. Engine test procedure, used methodology and data acquisition system and engine test results carried out in non-stationary conditions with using of crankshaft acceleration method are presented in the paper.
Źródło:
Journal of KONES; 2009, 16, 2; 141-148
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
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
    Wyświetlanie 1-2 z 2

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