Combustion and emission characteristics of high-compression-ratio diesel engine fueled with bio oil-ethanol blended fuel
- Authors
- Kim, T.Y.; Lee, S.H.; Jang, Y.W.; Kim, H.S.; Kang, K.Y.
- Issue Date
- 2014
- Publisher
- Korean Society of Mechanical Engineers
- Keywords
- Bio oil; Biomass; Diesel engine; Ethanol; Fast pyrolysis; High compression ratio
- Citation
- Transactions of the Korean Society of Mechanical Engineers, B, v.38, no.6, pp.501 - 511
- Journal Title
- Transactions of the Korean Society of Mechanical Engineers, B
- Volume
- 38
- Number
- 6
- Start Page
- 501
- End Page
- 511
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/13064
- DOI
- 10.3795/KSME-B.2014.38.6.501
- ISSN
- 1226-4881
- Abstract
- Bio-oil derived from biomass through fast pyrolysis process has the potential to displace a significant amount of petroleum fuels. However, the use of bio-oil in a diesel engine is very limited because of its poor properties, e.g., its low energy density, low cetane number, and high viscosity. Therefore, bio-oil should be emulsified or blended with other fuels that have high centane numbers. Because bio-oil has poor miscibility with petroleum fuels, the most suitable candidate fuels for direct mixing are alcohol fuels. In this study, bio-oil was blended with ethanol, and two types of cetane improvers were added to a blended fuel to improve the self-ignition property. The two types of cetane improvers, PEG 400 and 2-EHN, made it possible for bio-oil blended fuels to combust in a diesel engine with a maximum bio-oil content of 15 wt%. A high-compression-ratio piston is also proposed for the combustion of bio-oil in a diesel engine. © 2014 The Korean Society of Mechanical Engineers.
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