Patent ID: 8404011

Claim:
A method for the regeneration of a particle filter arranged in an exhaust gas train of an internal combustion engine, the method comprising: branching off, upstream of an exhaust gas turbine of an exhaust gas turbocharger, a predetermined amount of the exhaust gas stream to be heated in a regeneration mode; heating the branched-off exhaust gas stream by a heater; mixing the heated branched-off exhaust gas stream with a residual gas stream from the exhaust gas turbine at a feed point upstream of the particle filter, the residual gas stream being at a lower temperature than the heated branched-off exhaust gas stream; supplying the mixed exhaust gas stream to the particle filter; actuating by a control device at least one of a throttle device and a shut-off device in the branched-off exhaust gas stream or in the residual exhaust gas stream downstream of the exhaust gas turbine such that, as a function of at least one of predetermined operating parameters and regeneration parameters, a predetermined amount of exhaust gas is branched off at predetermined times from the residual exhaust gas stream upstream of the exhaust gas turbine, wherein if an oxygen content of the branched-off exhaust gas stream to be heated falls below a predetermined oxygen limit value during the regeneration mode, the control device at least one of shuts off and throttles the residual exhaust gas stream downstream of the branching point but upstream of the feed point by the at least one of the throttle device and the shut-off device such that a predetermined amount of exhaust gas is branched off from the exhaust gas stream upstream of the exhaust gas turbine as a function of the oxygen content of the exhaust gas stream and is sent to the at least one heater to the heat the branched-off exhaust gas stream.