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- W3168592796 endingPage "121136" @default.
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- W3168592796 abstract "The usage of i-propanol-n-butanol-ethanol (IBE) in engines as substitute resources can significantly reduce the regeneration and separation expenses in the manufacturing of n-butanol and avert the corrosion tendency of acetone in acetone-n-butanol-ethanol (ABE) proposed as the next generation biofuel of n-butanol. To predict the combustion and emission characteristics of IBE mixture and n-butanol in diesel engine, a synthetical skeletal mechanism including 152 species and 775 reactions was proposed in this study based on sub-mechanisms reduction, reduced sub-mechanisms coupling, and coupled sub-mechanisms optimization. After a preliminary evaluation using the uncertainty analysis based on polynomial chaos expansions, the mechanism was widely validated against ignition delay, laminar flame speed and premixed flame species profile. It provides a satisfactory prediction for the combustion characteristics of IBE, i-propanol, n-butanol, ethanol and diesel surrogates. A CFD model coupled with the mechanism was then developed to further verify the efficiency of the mechanism in engine combustion simulation. The findings portray that engine combustion and emissions characteristics were reliably reproduced. From the comparison study on IBE and n-butanol combustion in a diesel engine which is rarely reported, it is seen that the diesel blended with 15 vol% or 30 vol% IBE and n-butanol results in the prolonged ignition delay, shortened combustion duration, suppressed soot emissions, and deteriorated NOx emissions. The IBE-diesel blends have a shorter combustion duration, lower soot emissions and higher NOx emissions compared to n-butanol-diesel blends at the same blend ratio." @default.
- W3168592796 created "2021-06-22" @default.
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- W3168592796 date "2021-10-01" @default.
- W3168592796 modified "2023-10-14" @default.
- W3168592796 title "Skeletal mechanism for i-propanol-n-butanol-ethanol (IBE) and n-butanol combustion in diesel engine" @default.
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- W3168592796 doi "https://doi.org/10.1016/j.fuel.2021.121136" @default.
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