Abstract: A method and device for regeneration of a particulate filter situated on an exhaust line of an engine. The method determines a soot burden on the filter based on knowledge of a differential pressure ?P at ends of the filter and triggers combustion of the soot when the burden reaches a predetermined level. A pressure Pdownstream downstream from the filter is modeled without use of a pressure sensor and Pupstream is determined without use of a pressure sensor using the relationship Pupstream=?P+Pdownstream. The burden is determined by the relationship ?P=f (Qvol, mass of soot), with Qvol=K×(Qair+?fuel×Qcarb)×N×Tupstream/Pupstream, where K is a constant, Qair denotes a mass flow of air, ?fuel denotes a density of the fuel, Qcarb denotes a volumetric quantity of fuel, N denotes an rpm of the engine, and Tupstream denotes an absolute temperature measured upstream from the filter.

Abstract: The invention relates to a method for the regeneration of a particulate filter (7) arranged on an exhaust line (5) of an engine (3) of a motor vehicle (1), wherein the charge of said filter (7) is evaluated by means of a model wherein P=f(Qvol, soot mass), and P=Pup?Pdown, and Qvol=K*(Qair+pfuel*Qcarb)*N*Tup/Pup, or Pup et Pdown are the pressures measured respectively upstream and downstream from said particulate filter (7). The inventive method is characterized in that Pdown is modelled and in that Pup is determined by means of the relation Pup=P+Pdown.