Method and exhaust-gas treatment device for regenerating an exhaust-gas purification component and motor vehicle having the exhaust-gas treatment device

An exhaust-gas treatment device for a secondary exhaust tract of an exhaust system of an internal combustion engine, the exhaust-gas treatment device comprising:

• an exhaust-gas purification component having a purification structure within a housing, said purification structure being a particle separator or a particle filter, said purification structure having flow passages for exhaust gas, said purification structure having a purification structure total volume, said purification structure having at least one sub-volume being a sub-volume of said purification structure total volume;
• at least one ignition having at least one igniter disposed in said at least one sub-volume, at least one capacitor connected to said at least one igniter, at least one electrical energy source connected to said at least one capacitor and at least one controller connected to said at least one capacitor;
• said at least one sub-volume being defined as a space through which electrical current flows and being configured to be directly heated by the electrical current flow to an ignition temperature of at least 900° C. upon supplying the electrical energy so that not all of the exhaust gas and not all of the purification component are heated by the electrical energy;
• and
• said at least one sub-volume being configured to heat at least part of an accumulated soot in said at least one sub-volume to a temperature of at least 900° C. to convert at least accumulated particles in said at least one sub-volume as a result of an increase in temperature of said at least one sub-volume starting a particle burn-off reaction in said at least one sub-volume oxidizing the particles and extending the particle burn-off reaction to a larger volume of said exhaust-gas purification component.

A vehicle, comprising:

• an exhaust-gas treatment device for a secondary exhaust tract of an exhaust system of an internal combustion engine, said exhaust-gas treatment device including an exhaust-gas purification component having a purification structure within a housing, said purification structure being a particle separator or a particle filter, said purification structure having flow passages for exhaust gas, said purification structure having a purification structure total volume, said purification structure having at least one sub-volume being a sub-volume of said purification structure total volume, and at least one ignition having at least one igniter disposed in said at least one sub-volume, at least one capacitor connected to said at least one igniter, at least one electrical energy source connected to said at least one capacitor and at least one controller connected to said at least one capacitor;
• said at least one sub-volume being defined as a space through which electrical current flows and being configured to be directly heated by the electrical current flow to an ignition temperature of at least 900° C. upon supplying the electrical energy so that not all of the exhaust gas and not all of the purification component are heated by the electrical energy;
• said at least one sub-volume being configured to heat at least part of an accumulated soot in said at least one sub-volume to a temperature of at least 900° C. to convert at least accumulated particles in said at least one sub-volume as a result of an increase in temperature of said at least one sub-volume starting a particle burn-off reaction in said at least one sub-volume oxidizing the particles and extending the particle burn-off reaction to a larger volume of said exhaust-gas purification component;
• and
• said exhaust-gas purification component configured to be regenerated by:
• i) charging said at least one capacitor to store electrical energy therein;
• and
• ii) heating said at least one sub-volume to at least 900° C. through a supply of at least a part of the electrical energy stored in said at least one capacitor.

A vehicle, comprising:

• an internal combustion engine;
• an exhaust system associated with said internal combustion engine and having a radial catalytic converter, said radial catalytic converter having a main exhaust gas tract, a secondary exhaust gas tract, first and second end sides and ducts through which exhaust gas flows radially;
• an exhaust-gas treatment device including an exhaust-gas purification component being an impactor associated with said second end side of said radial catalytic converter, said impactor having an impactor total volume, said impactor having at least one sub-volume being a sub-volume of said impactor total volume;
• at least one ignition having at least one igniter disposed in said at least one sub-volume, at least one capacitor connected to said at least one igniter, at least one electrical energy source connected to said at least one capacitor and at least one controller connected to said at least one capacitor;
• said at least one sub-volume being defined as a space through which electrical current flows and being configured to be directly heated by the electrical current flow to an ignition temperature of at least 900° C. upon supplying the electrical energy so that not all of the exhaust gas and not all of the purification component are heated by the electrical energy;
• and
• said at least one sub-volume being configured to heat at least part of an accumulated soot in said at least one sub-volume to a temperature of at least 900° C. to convert at least accumulated particles in said at least one sub-volume as a result of an increase in temperature of said at least one sub-volume starting a particle burn-off reaction in said at least one sub-volume oxidizing the particles and extending the particle burn-off reaction to a larger volume of said exhaust-gas purification component.