METHOD FOR OPERATING A PARTICLE FILTER IN THE EXHAUST GAS TRAIN OF AN INTERNAL COMBUSTION ENGINE IN A MOTOR VEHICLE

摘要

The invention relates to a method for operating a particle filter (4) in the exhaust gas train of an internal combustion engine (1) of a motor vehicle, involving recurring soot combustion processes for the particle filter (4). According to the invention, the mass of non-combustible ash residues remaining after soot combustion is reduced in the particle filter (4) by supplying the particle filter (4) with a reducing substance along with the exhaust gas of the filter and is reacted with the ash residues such that the ash residues are chemically transformed and at least non-metal components of the ash residues are removed from the particle filter with the exhaust gas. Application: in passenger cars in particular.