The impact of n-butanol and iso-butanol as components of butanol-acetone (BA) mixture-diesel blend on spray, combustion characteristics, engine performance and emission in direct injection diesel engine
Article
Article Title | The impact of n-butanol and iso-butanol as components of butanol-acetone (BA) mixture-diesel blend on spray, combustion characteristics, engine performance and emission in direct injection diesel engine |
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ERA Journal ID | 5115 |
Article Category | Article |
Authors | Algayyim, Sattar Jabbar Murad (Author), Wandel, Andrew P. (Author), Yusaf, Talal (Author) and Hamawand, Ihsan (Author) |
Journal Title | Energy |
Journal Citation | 140, pp. 1074-1086 |
Number of Pages | 13 |
Year | 2017 |
Publisher | Elsevier |
Place of Publication | United Kingdom |
ISSN | 0360-5442 |
1873-6785 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.energy.2017.09.044 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0360544217315669 |
Abstract | This article assesses the impact of n-butanol (nB) and iso-butanol (isoB) as components of a butanol-acetone (BA) mixture on spray, combustion, engine performance and emission characteristics. The macroscopic spray characteristics including spray penetration, spray cone angle and spray volume of n-/iso-BA-diesel blends were measured at two injection pressures 300 bar and 500 bar. A direct visualisation technique high speed camera was used to analyse the images that were obtained. The spray results show that both n- and iso-BA-diesel blends achieved a slightly higher penetration distance compared to pure diesel, resulting in a better fuel-air distribution and mixing. Two blend ratios (10% and 20%) of iso- and n-BA-diesel blends were tested in a single-cylinder DI diesel engine at three engine speeds: 1400, 2000 and 2600 rpm at full load. The engine performance included measuring the following parameters: pressure inside the combustion cylinder; brake power (BP); and brake specific fuel consumption (BSFC). The exhaust gas emissions included measuring the following parameters: exhaust gas temperature (EGT); oxide of nitrogen (NOx); unburnt hydrocarbons (UHC); carbon monoxide (CO); and carbon dioxide (CO2). The results from the blended diesel with iso- and n- BA were also compared to pure diesel as a baseline. The results for 10 iso-BA-90 diesel showed a slight improvement in BP by 4% at medium speed, while the BP of 20iso-BA-diesel, 10 and 20 n-BA-diesel was slightly lower and comparable with pure diesel at all engine speeds. The highest peak in-cylinder pressure was measured for the iso-BA-diesel blends. BSFC and BTE were increased for both iso- and n-BA-diesel blends. CO emission reduced with the increase in both n-BA and iso-BA ratios in diesel blend. Both NOx emissions and EGT were decreased at all n-BA and iso-BA-diesel blends compared to pure diesel. UHC and NOx emissions concentration of n-BA-diesel blends were lower compared to that of the iso-BA-diesel blend. Thus, it can be concluded that iso-BA-diesel blends showed slight improvement in brake power and higher in-cylinder pressure, while n-BA-diesel blends resulted in lower emission levels in regard to NOx and UHC. Therefore, using n-BA and iso-BA blended together as an additive for diesel fuel could be a suitable blend to obtain optimum results in regard to engine performance. |
Keywords | butanol-acetone mixture, iso-butanol, n-butanol, spray characteristics, diesel engine performance and emissions |
ANZSRC Field of Research 2020 | 400703. Autonomous vehicle systems |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | School of Mechanical and Electrical Engineering |
Computational Engineering and Science Research Centre | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q4745/the-impact-of-n-butanol-and-iso-butanol-as-components-of-butanol-acetone-ba-mixture-diesel-blend-on-spray-combustion-characteristics-engine-performance-and-emission-in-direct-injection-diesel-engine
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