Optimized Regeneration Conditions of Ceramic Honeycomb Diesel Particulate Filters

Modeling thermal regeneration of wall‐flow diesel particulate traps

“…Other factors may also play an important role, such as the nature and composition of the accumulated particulate. For practical purposes, trap backpressure is used as an indication of maximum permissible trap loading on-road by means of rule of thumb approaches (Weaver, 1984;Higuchi et al, 1983;Wade et al, 1983;Shadev et al, 1984). The lack of knowledge of the effect of soot composition and accumulation mode on backpressure characteristics limits the accuracy obtainable by this technique.…”

A finite-volume-based two-dimensional wall-flow diesel particulate filter regeneration model

“…This is discussed in more detail when considering thermal equilibrium discussions in sub-section 5.3.2. Figure 7 shows the comparison of 1-D model result (Equation 19) with the experimental data from [33]. <Figure 7>…”

“…A comparison between the 2-D model and the experimental results by [33] at different DPF locations is shown in Figure 8. The measurement locations T 1 to T 5 are shown in Figure 9.…”

“…In addition, the 2-D model predicts a slower initial heating rate compared with the experimental data for locations T 2 and T 3 . The difference could be due to the heat liberated from the PM soluble organic fraction (SOF) vaporization during the initial heating up period, since the diesel PM used in [33] was not preheated prior to the DPF regeneration process. In addition, the model predicts a faster temperature reduction rate after the PM oxidation.…”

“…Experimental data from [33] were used to validate the 2-D wall-flow DPF regeneration model. A grid density of 60 by 60 in both x-and y-directions was used in the simulation.…”