Abstract
The safe soot limit is crucial for the optimization and regeneration management of Diesel Particulate Filters (DPF). Coupled exhaust after-treatment and stress models can largely substitute the ‘inherently’ destructive and cost-intensive experiments with, however, increased time/computational needs. The target of this work is to demonstrate that the role of DPF geometrical and thermomechanical properties on soot mass limit can be analyzed systematically with efficient solvers and advanced meshing methodologies. Application examples for cases of uncontrolled DPF regeneration mode with and without accumulated ash are discussed. The soot limit is not directly correlated with peak temperature as often assumed.
