Temat: Sadza - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Soot contamination of engine oil - the case of a small turbocharged spark-ignition engine
Autorzy:: Kozak, Miłosław
Siejka, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/2097467.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: engine oil
thermogravimetric analysis
soot
particulate matter
spark-ignition engine
olej silnikowy
analiza termograwimetryczna
sadza
pył zawieszony
silnik o zapłonie iskrowym
Opis:: The paper presents the results of thermogravimetric tests of engine oil used in a small turbocharged spark-ignition engine. The main observation from the research was a significant soot contamination of engine oil, that appears even at its low mileage. This indicates that also in the case of port fuel injection spark-ignition engine, high particulate matter emissions may occur. A rapid soot contamination of the oil in this engine indicates that the oil change interval should be shortened.
Źródło:: Combustion Engines; 2020, 59, 3; 28--32
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Numerical investigation on diesel combustion and emissions with a standard combustion model and detailed chemistry
Autorzy:: Pyszczek, R.
Schmalhorst, C.
Teodorczyk, A.
Powiązania:: https://bibliotekanauki.pl/articles/133708.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: diesel
n-heptane
ECFM-3Z model
combustion
emissions
soot
NOx
EGR
post-injection
olej napędowy
n-heptan
spalanie
emisja
sadza
Opis:: The aim of this study was to determine possibilities of the soot and NOx emissions reduction from an existing heavy-duty compression-ignition (CI) engine based only on in-cylinder techniques. To that end numerical simulations of such processes as a multiphase fuel flow through injector nozzles, a liquid fuel jet breakup and evaporation, combustion and emissions formation were performed in AVL Fire 3D CFD software. The combustion process was calculated with the ECFM-3Z model and with the detailed n-heptane oxidation scheme that consisted of 76 species and 349 reactions. Both approaches of combustion modeling were validated against experimental data from the existing engine working under 75% and 100% loads. As for the reduction of the NOx emission an introduction of exhaust gas recirculation (EGR) was investigated. As for the soot concentration reduction such measures as an increased rail pressure, application of a post-injection and an increased injector nozzles conicity were investigated. Finally the ECFM-3Z model with emissions models, as well as the n-heptane mechanism predicted that it is possible to reach specified emissions limits with application of EGR, post-injection and increased nozzles conicity.
Źródło:: Combustion Engines; 2015, 54, 3; 19-33
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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