CAJ | 학술논문

为了有效降低柴油机颗粒捕集器（DPF）再生过程产生的二次污染物，优化了催化氧化反应器（DOC）辅助DPF再生的燃油喷射规律。采用AM ESim建立了DOC和DPF模型，在Simulink中建立了发动机排放和DPF再生控制模型，将两个软件耦合搭建联合仿真平台。对模型进行了验证，提出了先缓后急的燃油喷射规律。结果表明：660是较为理想的DPF再生温度，优化后的燃油喷射规律能够大幅降低DPF再生的二次污染。
위료유효강저시유궤과립포집기（DPF）재생과정산생적이차오염물，우화료최화양화반응기（DOC）보조DPF재생적연유분사규률。채용AM ESim건립료DOC화DPF모형，재Simulink중건립료발동궤배방화DPF재생공제모형，장량개연건우합탑건연합방진평태。대모형진행료험증，제출료선완후급적연유분사규률。결과표명：660시교위이상적DPF재생온도，우화후적연유분사규률능구대폭강저DPF재생적이차오염。
In order to reduce the secondary pollution of DPF regeneration effectively ,the fuel injection law for DPF regenera‐tion aided with DOC was optimized .The DOC and DPF models were established with AMESim .And the engine emission and DPF regeneration control models were built with Simulink .Then the coupling simulation of two softwares was conducted .The coupled model was verified and the first slow and then fast fuel injection strategy was proposed .The results show that the ap‐propriate temperature for DPF regeneration is 660℃ and the optimized fuel injection can greatly reduce the secondary pollution of DPF regeneration .