Abstract
This paper discusses the result obtained from the investigation on the performance, emission, and combustion characteristics of multi-cylinder SI engines using ethanol-n butanol-unleaded gasoline blends (EB5, EB10, EB15, and EB20) as fuel. The tests were conducted at 10 Nm and 15 Nm load conditions. The speed varied between 1200 and 2400 rpm. Increased blend percentage increases brake thermal efficiency, and the brake thermal efficiency of 16.7%, 17.8%, 18.3%, and 19.2% are achieved for EB5, EB10, EB15, and EB20, respectively, at 15 Nm and 2400 rpm. The tremendous reduction in hydrocarbon and carbon monoxide emissions is observed with an increase in load and speed conditions with blends. The lowest hydrocarbon and carbon monoxide emissions of 164 ppm and 0.01569%, respectively, are obtained at 15 Nm and 2400 rpm. However, oxides of nitrogen emissions increased in all blends and load conditions. The EB20 blend produced the highest in-cylinder pressure of 27.2 bar at 15 Nm and 2400 rpm.
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Abbreviations
- BMEP:
-
Brake mean effective pressure
- BP:
-
Brake power
- BSFC:
-
Brake specific fuel consumption
- bTDC:
-
Before top dead center
- BTE:
-
Brake thermal efficiency
- CA:
-
Crank angle
- CO:
-
Carbon monoxide
- CO2 :
-
Carbon dioxide
- CR:
-
Compression ratio
- EB:
-
Ethanol-butanol
- EB0:
-
Pure gasoline
- EB5:
-
5% Ethanol-butanol—95% gasoline
- EB10:
-
10% Ethanol-butanol—90% gasoline
- EB15:
-
15% Ethanol-butanol—85% gasoline
- EB20:
-
20% Ethanol-butanol—80% gasoline
- HC:
-
Hydrocarbon
- NO:
-
Nitrogen oxide
- NOx:
-
Oxides of nitrogen
- O2 :
-
Oxygen
- ppm:
-
Parts per million
- RON:
-
Research octane number
- RPM:
-
Revolution per minute
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Palani, T., Esakkimuthu, G.S., Dhamodaran, G. et al. Experimental study on dual oxygenates (ethanol, n-butanol) with gasoline on MPFI engine performance and emission characteristics. Int. J. Environ. Sci. Technol. 21, 245–254 (2024). https://doi.org/10.1007/s13762-023-04852-6
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DOI: https://doi.org/10.1007/s13762-023-04852-6