Effects of EGR rates on combustion and emission characteristics in a diesel engine with n-butanol/PODE3-4/diesel blends

作者: Haozhong Huang , Zhongju Li , Wenwen Teng , Rong Huang , Qingsheng Liu

DOI: 10.1016/J.APPLTHERMALENG.2018.09.126

关键词:

摘要: Abstract An experimental investigation is conducted on the influence of EGR (Exhaust Gas Recirculation) rates (0–40%) combustion and emission characteristics n-butanol/diesel/PODE3-4 blends at low-temperature mode in diesel engine. The results show that identical rate, compared to D100 (diesel fuel), peak values both mean cylinder pressure heat release rate BD20 (20% butanol 80% volume) are increased, ignition delay extended, brake thermal efficiency enhanced. Concerning blended with PODE3-4, shortened, while increase. At below 30%, as grows, effects soot, CO HC not significant, NOx sharply reduced; when above it emissions CO, drastically rise. As total particulate matter (PM) number concentrations four fuels firstly decline then rise, PM mass keep stable rise drastically. proportion added PODE3-4 particle geometric diameters further decrease.

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