Clean Combustion in a Diesel Engine Using Direct Injection of Neat n-Butanol

Yanai, Tadanori; Han, Xiaoye; Wang, Meiping; Reader, Graham T.; Zheng, Ming; Tjong, Jimi

doi:10.4271/2014-01-1298

Cited by 23 publications

(4 citation statements)

References 25 publications

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“…Despite the slight increase in NOx with the post injection, the use of butanol resulted in significantly reduced NOx emissions compared to the traditional DI diesel strategy. The use of butanol for NOx reduction has been demonstrated in previous studies [18,28].…”

Section: Exhaust Gas Temperaturementioning

confidence: 86%

“…Post injection and alternative fuel studies in compression ignition engines have been previously done by many researchers [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]. Numerous diesel post injection studies have been carried out to determine the effects of the post injection on soot emissions [20][21][22][23][24][25].…”

Section: Literature Reviewmentioning

confidence: 99%

“…In this study, the post injection characterization tests were performed with traditional and alternative fuel strategies due to the potential emission benefits of alternative fuels. Oxygenated alternative fuels, such as ethanol and butanol, can be used in a dual fuel application with diesel to enable premixing enhanced combustion and can be an attractive option for the reduction of PM and NOx emissions in lean-burn compression ignition engines [18,19]. In addition, it is possible to utilize port injection of pure butanol to allow for homogenous charge compression ignition (HCCI) which could further reduce the particulate matter emissions.…”

Section: Introductionmentioning

confidence: 99%

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A study of the effect of post injection on combustion and emissions with premixing enhanced fueling strategies

Jeftić

Zheng

2015

Applied Energy

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Section: Exhaust Gas Temperaturementioning

confidence: 86%

Section: Literature Reviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A study of the effect of post injection on combustion and emissions with premixing enhanced fueling strategies

Jeftić

Zheng

2015

Applied Energy

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“…One of the emerging biofuel, which is n‐butanol fuel, is particularly competitive in the automotive sector over the past decade due to the similarities in physical and chemical properties such as density, latent heat of vaporization, calorific value, octane number, and cetane number to those of gasoline and diesel fuels 5,6 . As such, n‐butanol fuel has been widely studied in different internal combustion engine setups such as spark‐ignition engine, 7–16 compression‐ignition engine, 17–21 and homogeneous charge compression ignition engine (HCCI) engine 22–26 . The engine performance of n‐butanol–gasoline/diesel blends was perceived to be on par with those of pure gasoline and diesel fuels, whereas emissions such as soot and nitrogen oxides (NO x ) were significantly reduced 6,13,19 …”

Section: Introductionmentioning

confidence: 99%

Development and validation of a n‐butanol reduced chemical kinetic mechanism under engine relevant conditions

Choo

Cheng

Scribano

et al. 2021

Int J of Chemical Kinetics

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A n‐butanol reduced mechanism (60 species and 306 reactions) was developed using the direct relation graph with error propagation and isomer lumping methods. Sensitivity analysis (SA) was then performed to identify reactions that were sensitive to the ignition delay (ID) for the adjustments of the pre‐exponential factor to replicate the experimental ID times. As compared with the experimental measurements at initial temperatures of 343–1350 K, initial pressures of 0.02–80 bar, and equivalence ratios of 0.5–2.0, the maximum deviation for the predictions by the n‐butanol reduced mechanism was at 37.75% for the ID times, 8 cm/s for the laminar flame speed, and a factor of three for both the species concentration profiles under jet‐stirred reactor and premixed laminar flame. Furthermore, a maximum deviation of 2.5 crank angle degrees in combustion phasing was obtained when the reduced mechanism was benchmarked against the detailed mechanism under homogeneous charge compression ignition (HCCI) conditions at initial temperature of 413 K, initial pressure of 1 bar, and equivalence ratios of 0.5–2.0. Despite these deviations, the low temperature IDs and the laminar flame speed predicted by the present reduced mechanism were in better agreement to the experimental measurements than the existing n‐butanol reduced mechanisms of comparable sizes. Hence, this collectively indicates that improvements were made to the present reduced mechanism, particularly for the low‐temperature reactions. The n‐butanol reduced mechanism was also compared with gasoline and diesel surrogates under 0D HCCI simulations. The results indicate that the combustion characteristics of n‐butanol is closer to gasoline than to diesel. This suggests that n‐butanol could safely replace gasoline fuel in neat form while it is more suitable to be blended with diesel fuel to maintain engine performance and prevent any adverse effects on the engine.

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