Regeneration of nitrogen oxides storage catalyst involves carrying out regeneration during at least portion of regeneration time with reduced exhaust gas return rate and/or with exhaust gas return

摘要

Process for carrying out NOx regeneration of a NOx storage catalyst arranged in the exhaust gas channel (12) of an I.C. engine (10) comprises carrying out the regeneration during at least a portion of the regeneration time with a reduced exhaust gas return rate and/or with exhaust gas return. An Independent claim is also included for a device for carrying out NOx regeneration of a NOx storage catalyst arranged in the exhaust gas channel of an I.C. engine comprising a control unit (22) integrated in an engine control device (20).