Soot Distribution Characteristics and Its Influence Factors in Burner-Type Regeneration Diesel Particulate Filter

The burner-type regeneration diesel particulate filter is one of the most widely used filters. Using AVL FIRE, a 3D model (DPF) was established, and simulation analyses were carried out. effects exhaust parameters (temperature, mass flow rate, soot load) structural (channel density, inlet/outlet channel ratio, length–diameter ratio) on distribution (soot concentration thickness) analyzed. results show that characteristics regenerative DPF with burner are as follows: first rapidly rises to maximum value then decreases low value, dust thickness gradually increases increase in location. With rate load, increase. temperature, ash decreased. When temperature exceeds 750 K, begins regenerate. Among parameters, has greatest influence distribution. ratio inlet outlet channel, density have little effect soot, density. In addition 2.1, rising also accelerated. decreased channels. more than 250, change basically same. channels 1.3,