Combustion performance and emission characteristics of a diesel engine burning biodiesel blended with n-butanol

The combustion and emission characteristics of a four-cylinder direct injection diesel engine fueled with 0%, 10%, 20% or 30% blends of n-butanol and biodiesel were characterized at the loads of 0.13–1.13 MPa brake mean effective pressure (BMEP) and the speed of 1800 rpm. With the main injection tim...

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Bibliographic Details
Published in:Fuel (Guildford) 2019-12, Vol.258, p.115887, Article 115887
Main Authors: Xiao, Helin, Guo, Fengyun, Li, Shengjun, Wang, Ru, Yang, Xiaolong
Format: Article
Language:English
Subjects:
1,3-Butadiene
Acetaldehyde
Benzene
Biodiesel fuels
Biofuels
Blends of n-butanol and biodiesel
Burning
Butadiene
Butanol
Combustion
Delay
Diesel
Diesel engine
Diesel engines
Emission
Emission measurements
Emissions
Engine cylinders
Heat release rate
Heat transfer
Ignition
Injection
Pressure
Soot
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Summary:The combustion and emission characteristics of a four-cylinder direct injection diesel engine fueled with 0%, 10%, 20% or 30% blends of n-butanol and biodiesel were characterized at the loads of 0.13–1.13 MPa brake mean effective pressure (BMEP) and the speed of 1800 rpm. With the main injection time and rotation speed constant in the bench test, the cylinder pressure, heat release rate, ignition delay and the regulated or unregulated emissions were measured. The peak of HRR maximized at 0.38 MPa BMEP. The ignition delay period was prolonged in the case of n-butanol. But the combustion duration was shorten with the rising of n-butanol ratio. When n-butanol was added, more HC, NOx and acetaldehyde and less CO, 1,3-butadiene and benzene were emitted. For soot emissions, the addition of n-butanol would reduce the formation of soot. In conclusion, the addition of n-butanol improves the combustion performance while there has different changes about emission characteristics.
ISSN:0016-2361
1873-7153
DOI:10.1016/j.fuel.2019.115887