Temat: Depozyty - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Influence of physicochemical properties of gasoline on the formation of DISI engine fuel injector deposits
Autorzy:: Stępień, Zbigniew
Powiązania:: https://bibliotekanauki.pl/articles/2097508.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: direct injection spark ignition engine
injector deposits
deposit control additives
fuel
engine tests
silnik ZI z wtryskiem bezpośrednim
depozyty na wtryskiwaczach
dodatki kontrolujące depozyty
paliwo
testy silnikowe
Opis:: This paper describes the results of an engine study of the tendency for fuel injector deposits to form by gasolines of various compositions. Since the factors promoting the formation of fuel injector deposits in DISI engines have, in many cases, been insufficiently identified they require further research and investigation work, which was the greatest motivation for undertaking this project. The latest CEC F-113-KC test procedure for the most damaging deposits in DISI engine injectors was used for this purpose. The research results obtained in the framework of the conducted project indicated T90, aromatic and olefinic hydrocarbons, sulphur, ethanol, DVPE, IBP and fuel density as the most important factors causing the increase in the tendency for deposits to form on the injectors of SI type DISI engines.
Źródło:: Combustion Engines; 2021, 60, 1; 16--23
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Deposition effect of carbon deposits on charge flow in EGR valve equipped CI engine
Autorzy:: Woźniak, Marek
Siczek, Krzysztof
Zakrzewski, Sergiusz
Just, Paweł
Ozuna, Gustavo
Onescu, Constantin
Powiązania:: https://bibliotekanauki.pl/articles/24202415.pdf
Data publikacji:: 2023
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: CI engine
EGR valve
carbon deposits
CFD analysis
silnik ZS
zawór EGR
depozyty węglowe
analiza CFD
Opis:: The exhaust gas recirculation (EGR) valve regulates the exhaust gas flow between the engine exhaust manifold and the inlet one. This allows the inlet air to warm up, improving fuel evaporation and reducing the combustion temperature of the charge. Such a valve reduces the number of harmful substances in the exhaust gases. The valve tends to stick when too much sediment builds on the walls of the exhaust system, especially during driving in urban conditions or when leaks in the vacuum or exhaust pipes occur. A faulty valve causes the engine to run unevenly at idle speed and under light loads. The defective EGR valve weakens the inlet manifold capacity, increases combustion, causes clogging of the particulate filter and damage to the lambda probe. Blocked EGR valve may lead to engine immobilization as a result of its computerized control system operations. A model of an EGR valve for a selected diesel engine was developed to determine velocity distribution of the load flowing in it for different values of the degree of valve opening and the volume of deposits on the valve walls. The volume of accumulated carbon deposits on the walls of the EGR valve was measured using a real engine. Based on the recorded mileage of the vehicle, the assumed average speed of the car and the driving style of the driver and the intensity of deposition of carbon particles on the walls was estimated.
Źródło:: Combustion Engines; 2023, 62, 1; 26--35
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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