Method and device for cleaning an exhaust gas flow of a combustion engine

The method involves arranging a throttle device (8) in an exhaust gas partial flow (6''), and arranging another throttle device (7) in a main-exhaust gas flow (6'). The throttle devices are controlled by a controlling and/or regulating device based on reference exhaust gas amount and/or reference exhaust gas pressure and/or reference-air-fuel-ratio and/or reference exhaust gas temperature in the main flow and/or in the partial flow. The main flow is locked or throttled by the latter throttle device, and the partial flow is retained in a defined amount by the former throttle device. An independent claim is also included for a device for cleaning exhaust gas flow of an internal combustion engine.