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Wyświetlanie 1-2 z 2
Tytuł:
Prechamber optimal selection for a two stage turbulent jet ignition type combustion system in CNG-fuelled engine
Autorzy:
Pielecha, Ireneusz
Bueschke, Wojciech
Skowron, Maciej
Fiedkiewicz, Łukasz
Szwajca, Filip
Powiązania:
https://bibliotekanauki.pl/articles/133967.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
gas engine
prechamber
thermodynamic analysis
combustion
exhaust emission
optimization
silnik gazowy
komora wstępna
analiza termodynamiczna
spalanie
emisja spalin
optymizacja
Opis:
Searching for further reduction of fuel consumption simultaneously with the reduction of toxic compounds emission new systems for lean-mixture combustion for SI engines are being discussed by many manufacturers. Within the European GasOn-Project (Gas Only Internal Combustion Engines) the two-stage combustion and Turbulent Jet Ignition concept for CNG-fuelled high speed engine has been proposed and thoroughly investigated where the reduction of gas consumption and increasing of engine efficiency together with the reduction of emission, especially CO2 was expected. In the investigated cases the lean-burn combustion process was conducted with selection of the most effective pre-combustion chamber. The experimental investigations have been performed on single-cylinder AVL5804 research engine, which has been modified to SI and CNG fuelling. For the analysis of the thermodynamic, operational and emission indexes very advanced equipment has been applied. Based on the measuring results achieved for different pre-chamber configurations the extended methodology of polioptimization by pre-chamber selection and the shape of main chamber in the piston crown for proposed combustion system has been described and discussed. The results of the three versions of the optimization methods have been comparatively summarized in conclusions.
Źródło:
Combustion Engines; 2019, 58, 1; 16-26
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative study on combustion characteristics of lean premixed CH4/air mixtures in RCM using spark ignition and turbulent jet ignition in terms of orifices angular position change
Autorzy:
Bueschke, Wojciech
Skowron, Maciej
Wisłocki, Krzysztof
Szwajca, Filip
Powiązania:
https://bibliotekanauki.pl/articles/973119.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
CNG
turbulent jet ignition
prechamber
optical analysis
flame development
heat release rate
turbulentny zapłon odrzutowy
komora wstępna
analiza optyczna
szybkość wydzielania ciepła
Opis:
The increase in ignitability consist a main aim of implementation of the turbulent jet ignition (TJI) in relation to the combustion of diluted charges. Such an ignition system has been introduced to the lean-burn CNG engine in the scope of GasOn-Project (Gas Only Internal Combustion Engines). In this study the impact of TJI application on the main combustion indexes has been investigated using RCM and analyzed on the bases of the indicating and optical observations data. The images have been recorded using LaVision HSS5 camera and post-processed with Davis software. Second part of the study based on indicating measurements consist the analysis of combustion regarding the variation in the geometry of pre-chamber nozzles. It has been noted, that combustion with TJI indicates significantly bigger flame luminescence and simultaneously - faster flame front development, than the combustion initiated with conventional SI. The positive impact of nozzles angular position on engine operational data has been found in the static charge movement conditions, regarding the combustion stability.
Źródło:
Combustion Engines; 2019, 58, 1; 36-41
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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