Journal
FUEL
Volume 207, Issue -, Pages 741-750Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2017.06.033
Keywords
Biodiesel; Water; Metal-based additive; Diesel engine; Emission; Performance
Categories
Funding
- Biofuel Research Team (BRTeam)
- Agricultural Biotechnology Research Institute of Iran (ABRII)
- Iranian Biofuel Society (IBS)
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Improving fuel combustion in engines and consequently reducing environmentally-unfavorable emissions is of prominent importance in addressing some of the main challenges of the current century, i.e., global warming and climate change. Fuel additives are considered as efficient way for improving fuel properties and to diminish engine emissions. In line with this, the present research was focused on the simultaneous application of water (3, 5, and 7 wt.%) and cerium oxide nano particles (90 ppm) as metal-based additive into biodiesel/diesel fuel blend (B5) and their impacts on the performance and emission characteristics of a single cylinder four stroke diesel engine were investigated. The findings revealed that the aqueous nano-emulsion of cerium oxide improved the overall combustion quality. More specifically, the brake specific fuel consumption (bsfc) of B5 containing 3% water and 90 ppm cerium oxide (B5W3(m)) was measured 5% and 16% lower than those of neat B5 and neat B5 containing 3% water (B5W3), respectively. Moreover, the B5W3(m) fuel blend increased brake thermal efficiency (bte) by over 23 and 11% compared with B5W3 and B5, respectively. B5W3(m) also considerably reduced CO, HC, and NOx emissions by 51, 45, and 27% compared with B5W3. To the best of our knowledge, this is the first report exploring the impacts of low-level water containing cerium oxide in B5 on engine performance and emission characteristics. (C) 2017 Elsevier Ltd. All rights reserved.
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