201458 Materiah of DPF 角地机持气后处夏旋抛丝银■ 能地展注铺时鲜 蒙素生境N出，足应 红速源里复 ,-400+0 INOD 4LO-C +XIl, lw道=-划0 指安 ,1图eot4d3-onetidde can: 小e线aaa如：心地然事 的凡冷大复 大汽单 窗凡冷复 量控业道■旋地通 地精晨再生系峡 4C45 4145 4345 Active DPE Schematis (Possibly 典型的柴油机排气后处理方案 真型的州铺林帅气后处速方需 DPF 物凡冷木 434g 包日冷大军 445 @R冷大司 4452014/5/8 5 37/45 同济大学汽车学院 Main reaction of NH3-SCR: Difficulties of the SCR system: High cost: is about 3% ~ 5% of Vehicle cost ; Space problem: converter and storage tank of urea(尿素存储罐) require more space. So it's difficult to promote SCR in the light vehicle. But heavy vehicles have been widely applied successfully in Europe. 38/45 同济大学汽车学院 Objective: (1) oxidant can convert most of the hydrocarbons in soluble organic fraction (SOF), so as to reduce particulate emissions;(氧化剂可以转化可溶性有机组分中的大部分碳氢化 合物，从而达到降低微粒排放的效果)。 (2) to further reduce HC and CO emissions, such as ethanal(乙醛). 5. Diesel Particulate Filter of Aftertreatment System 柴油机排气后处理装置颗粒捕捉器 Requirement (1) high filtration efficiency;高过滤效率 (2) low exhaust resistance;低排气阻力 (3) high temperature resistant.耐高温 39/45 同济大学汽车学院 Materials of DPF (颗粒捕捉器的过滤材料) (1) ceramic honeycomb carrier; 陶瓷蜂窝载体 (2) ceramic fiber braid; 陶瓷纤维编织物 (3) the metal fiber braid. 金属纤维编制物 40/45 同济大学汽车学院 Wall flow diesel particulate filter (壁流式柴油机颗粒过滤器) 41/45 同济大学汽车学院 DPF regeneration method: (1) electric heating regeneration;电加热再生 (2) burner heating regeneration;燃烧器加热再生 (3) counter blowing regeneration;反吹式再生 (4) continuous catalyst regeneration.连续催化再生 42/45 同济大学汽车学院 DPF regeneration system (颗粒捕捉器再生系统) 43/45 同济大学汽车学院 DPF 44/45 同济大学汽车学院 Typical aftertreatment system of diesel engine emissions (典型的柴油机排气后处理方案) 45/45 同济大学汽车学院