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Wyświetlanie 1-2 z 2
Tytuł:
Hydrocarbon species in SI and HCCI engine using winter grade commercial gasoline
Autorzy:
Elghawi, Usama
Mayouf, Ahmed
Tsolakis, Athanasios
Powiązania:
https://bibliotekanauki.pl/articles/2097456.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
homogeneous charge compression ignition
HCCI
gas chromatography-mass spectrometry
GC-MS
hydrocarbon speciation
regulated emissions
unregulated emissions
zapłon samoczynny mieszanki jednorodnej
chromatografia gazowa ze spektrometrią mas
specjacja węglowodoru
emisje regulowane
emisje nieregulowane
Opis:
The study provides a qualitative and quantitative analysis of the C5-C11 hydrocarbon species generated in Spark Ignition - Homogeneous Charge Compression Ignition (SI/HCCI) gasoline direct injection (GDI) engine at range of operating conditions. The presented results and data were obtained from the combustion of winter grade commercial gasoline containing 2% w/w ethanol (C2H5OH) for the engine operated in steady-state, fully warmed-up condition. The hydrocarbon analysis in exhaust gases was executed on a Gas Chromatography-Mass Spectrometer (GC-MS) apparatus directly connected to the engine exhaust via heated line. The highest concentration of the total hydrocarbon emissions was obtained under low load HCCI engine operation at stoichiometric fuel-air ratio. The major hydrocarbon compounds detected in the collected samples were benzene, toluene, p-xylene, and naphthalene. Benzene originates from the incomplete combustion of toluene and other alkylbenzenes which are of considerable environmental interest. During the SI engine operation, increase of the engine speed and load resulted in the increase of benzene and the total olefinic species with simultaneous decrease in isopentane and isooctane. The same trends are seen with the engine operating under HCCI mode, but since the combustion temperature is always lower than SI mode under the same engine conditions, the oxidation of fuel paraffin in the former case was less. As a result, the total olefins and benzene levels in HCCI mode were lower than the corresponding amount observed in SI mode. Aromatic compounds (e.g., toluene), except for benzene, were produced at lower levels in the exhaust when the engine speed and load for both modes were increased.
Źródło:
Combustion Engines; 2020, 59, 1; 17--24
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-regulated emissions and particle number emissions of two passenger cars with diesel-butanol blends
Autorzy:
Engelmann, Danilo
Comte, Pierre
Czerwinski, Jan
Renz, Stephan
Bonsack, Peter
Powiązania:
https://bibliotekanauki.pl/articles/2097481.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
alternative fuels
non-legislated emissions
ultrafine particles
diesel particle filter
cold start emissions
paliwa alternatywne
nieregulowane emisje
cząstki ultradrobne
filtr cząstek stałych
emisje zimne
Opis:
Biofuels represent one of the alternatives to obtain the CO2 - neutral propulsion of IC-engines. Butanol, which can be produced from biomass, is considered and was investigated in the last years due to the very advantageous characteristics of this alternative fuel. Butanol can be easily and irreversibly blended both with light (gasoline) and heavier (diesel) fuels. Comparing with ethanol it has the advantages of: higher calorific value, lower hygroscopicity and lower corrosivity. It can replace the aviation fuels. This paper presents the emission results obtained on two diesel passenger cars with different technology (Euro 2 and Euro 6c) and with addition of butanol to diesel fuel, as a part of the research project DiBut (diesel and butanol). Interesting results are given about some non-legislated (non-regulated) components, acetaldehyde (MeCHO) and formaldehyde (HCHO) and about the PN-emissions with/without DPF.
Źródło:
Combustion Engines; 2020, 59, 4; 29--38
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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