基于柴油机台架，通过改变来流温度，探索再生温度对DOC+CDPF后处理系统连续再生速率、温度场分布和气体排放等影响的规律。试验结果表明：CDPF滤饼层捕集阶段，随着颗粒物的沉积，单位沉积质量的压降变化速率增幅约为69.8%。CDPF再生过程中，颗粒物的氧化主要集中在载体的前半部分，再生温度升高，NO₂消耗量增加，再生速率加快，载体出口NO_x总量略有下降，CO和THC下降幅度分别为99%和80%~90%。此外，再生时CDPF中心的轴向温度由前向后先上升后下降，载体边缘的轴向温度由前向后不断上升，再生温度越高，轴向温度梯度越大；径向温度由中心向边缘不断减小，且距离载体入口的距离越小，再生温度越高，径向温度梯度越大。

Based on the diesel engine bench, the influence of regeneration temperature on continuous regeneration rate, temperature field distribution and gas emission was explored by changing the inflow temperature. The test results show that the change rate of pressure drop per unit deposition mass increases by about 69.8% with the deposition of particles in the capture stage of CDPF filter cake layer. During CDPF regeneration, the oxidation of particles is mainly concentrated in the first half of carrier. With the increase of regeneration temperature, the consumption of NO₂ increases, the regeneration rate accelerates, and the total amount of NO_x at carrier outlet decreased slightly and the decreases of CO and THC were 99% and 80%-90% respectively. In addition, the axial temperature in the center of CDPF increases first and then decreases from front to back, and the axial temperature at the edge of carrier increases continuously from front to back. The higher regeneration temperature has the greater axial temperature gradient. The radial temperature decreases from center to edge, and the smaller distance from carrier inlet, the higher regeneration temperature and the greater radial temperature gradient.