Filtreler

2016 - 20192
Filtreleri Sıfırla

Ayarlar

Konu: RCCI × WoS Q: Q1 ×

Arama Sonuçları

Listeleniyor 1 - 2 / 2
  • Küçük Resim
    Öğe
    Analysis of ethanol RCCI application with safflower biodiesel blends in a high load diesel power generator
    (Elsevier, 2016-11-15) Işık, Mehmet Zerrakki; Aydın, Hüseyin
    The effects of RCCI in a diesel power generator by using safflower oil biodiesel-diesel blends were experimentally investigated. Ethanol was premixed as PFI by rates of 30% and 50% of total mass fuel consumption of the engine. Tests were conducted at constant engine speed of 1500 rpm and fixed load 10.8 kW engine power. The purpose of blending biodiesel with diesel is to increase the fuel reactivity of primary fuel in order to easily initiate the combustion. Therefore, test fuels were prepared by blending 10% of the biodiesel with 90% of diesel, 20% of the biodiesel with 80% of diesel and 50% of the biodiesel with 50% of diesel. The most important combustion, performance and emission indicators of the engine under various conditions have been deeply investigated and results have been presented. The ethanol RCCI operation increased peak pressure values especially with using of B50 as high reactivity fuel while combustion was retarded for both RCCI modes. Overall, many indicators of the combustion was improved. Performance parameters were developed. Especially, bsfc was considerably increased. NOx, emissions were considerably decreased while CO and HC emissions were a bit increased.
  • Küçük Resim
    Öğe
    Investigation on the effects of gasoline reactivity controlled compression ignition application in a diesel generator in high loads using safflower biodiesel blends
    (Elsevier, 2019-04) Işık, Mehmet Zerakki; Aydın, Hüseyin
    In this study, the effects of Reactivity Controlled Compression Ignition (RCCI) application on engine combustion, performance and emissions in a diesel generator were investigated. In the experiments, safflower oil derived biodiesel and diesel mixtures were used as the high reactivity fuel (primary fuel) and gasoline as the low reactivity fuel. The RCCI application was provided by the connection of a secondary fuel injection system with the intake manifold. The gasoline RCCI application rate was 30% and 50% of the total mass fuel consumption of the engine and was pre-mixed as port fuel injection (PFI). Tests were performed at a constant engine load (10.8 kW) and engine speed of 1500 rpm. The purpose of using diesel and biodiesel mixtures is to increase the reactivity of the primary fuel that facilitates the start of the combustion. The combustion, performance and emissions, which are the most important parameters of the engine operation, have been thoroughly investigated and the results were presented. In RCCI application, in peak values of pressure, velocity of heat release, average gas temperature partial increases were determined. When the ratio of gasoline PFI was increased, the NOx emissions significantly decreased and the engine efficiency was also increased, while the CO and HC emissions were slightly increased.