Abstract
The continuous rise in the cost of fossil fuels as well as in environmental pollution has attracted research in the area of clean alternative fuels for improving the performance and emissions of internal combustion (IC) engines. In the present work, n-butanol is treated as a bio-fuel and investigations have been made to evaluate the feasibility of replacing diesel with a suitable n-butanol-diesel blend. In the current research, an experimental investigation was carried out on a variable compression ratio CI engine with n-butanol-diesel blends (10–25% by volume) to determine the optimum blending ratio and optimum operating parameters of the engine for reduced emissions. The best results of performance and emissions were observed for 20% n-butanol-diesel blend (B20) at a higher compression ratio as compared to diesel while keeping the other parameters unchanged. The observed deterioration in engine performance was within tolerable limits. The reductions in smoke, nitrogen oxides (NO x ), and carbon monoxide (CO) were observed up to 56.52, 17.19, and 30.43%, respectively, for B20 in comparison to diesel at rated power. However, carbon dioxide (CO2) and hydrocarbons (HC) were found to be higher by 17.58 and 15.78%, respectively, for B20. It is concluded that n-butanol-diesel blend would be a potential fuel to control emissions from diesel engines.
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Abbreviations
- BSEC:
-
Brake specific energy consumption
- BSFC:
-
Brake specific fuel consumption
- BTE:
-
Brake thermal efficiency
- CA btdc:
-
Crank angle before top dead centre
- CI:
-
Compression ignition
- CO:
-
Carbon monoxide
- CN:
-
Cetane number
- CO2 :
-
Carbon dioxide
- HC:
-
Hydrocarbons
- IC:
-
Internal combustion
- NO x :
-
Nitrogen oxides
- PM:
-
Particulate matter
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The authors are grateful to MNIT Jaipur and SKIT, Jaipur, for providing the facilities during the course of this study.
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Nayyar, A., Sharma, D., Soni, S.L. et al. Experimental investigation of performance and emissions of a VCR diesel engine fuelled with n-butanol diesel blends under varying engine parameters. Environ Sci Pollut Res 24, 20315–20329 (2017). https://doi.org/10.1007/s11356-017-9599-8
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DOI: https://doi.org/10.1007/s11356-017-9599-8