黄粉莲，田茂盛，申立中，董诚，毕玉华.柴油/汽油反应活性控制压燃发动机喷油协调控制与排放特性研究[J].内燃机工程,2020,41(2):54-61.
柴油/汽油反应活性控制压燃发动机喷油协调控制与排放特性研究
Study on Dual-Fuel Injection Coordination Control and Emission Performance of Diesel-Gasoline Reactivity Controlled Compression Ignition Engines
DOI：10.13949/j.cnki.nrjgc.2020.02.008
关键词:柴油机  反应活性控制压燃  汽油  协调控制  排放
Key Words:diesel engine  reactivity controlled compression ignition（RCCI）  gasoline  coordination control  emission
基金项目:云南省科技计划项目（2019FB073）
作者单位
黄粉莲，田茂盛，申立中，董诚，毕玉华 昆明理工大学 云南省内燃机重点实验室，昆明 650500 
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摘要:对某4缸高压共轨柴油机进气道进行改造，搭建了柴油/汽油双燃料反应活性控制压燃（reactivity controlled compression ignition， RCCI）发动机专用试验台架，设计了柴油/汽油双燃料RCCI燃烧汽油喷射控制策略，实现了全工况下汽油与柴油的协调喷射控制，系统地研究了不同运行工况下，不同汽油替代率对柴油机燃烧与排放性能的影响规律。结果表明：采用柴油/汽油双燃料 RCCI燃烧控制策略，发动机可在其运行工况范围内实现高效清洁燃烧，随着汽油替代率的增加，发动机缸内最高压力逐渐增大，缸压峰值出现时刻推迟，放热率峰值降低，燃烧持续期延长，燃油消耗率降低，有效热效率升高，全碳氢、CO排放增加，NOx和碳烟排放降低。
Abstract:4-cylinder high pressure common rail diesel engine test bench was modified to have reactivity controlled compression ignition(RCCI) combustion. A coordination-control strategy of injection for RCCI combustion was developed to adjust gasoline and diesel injections at the whole operating conditions. The effects of different gasoline fraction on the combustion and emissions of diesel engine operated with RCCI mode at different operating conditions were studied. The results show that the diesel/gasoline RCCI combustion control strategy can achieve an efficient and clean combustion. With the increase of gasoline fraction, the peak in-cylinder pressure increases gradually and appears late, the peak heat release rate decreases, the combustion duration is prolonged, the brake specific fuel consumption(BSFC) declines, and the effective thermal efficiency becomes great. And the emissions of hydrocarbon and CO increases remarkably due to the unburned fuel at low load operating conditions. Operating with the RCCI mode, the engine has higher volatility and better overall fuel-air mixing, resulting in improved combustion and reduced nitrogen oxide(NOx) and soot emissions. A good trade-off between NOx and soot emissions is achieved perfectly.
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