Exhaust Gas Aftertreatment Device for a Combustion Engine

An exhaust gas aftertreatment device for a combustion engine, the exhaust gas aftertreatment device comprising:

• a guide element configured to receive exhaust gas of the combustion engine can flow, the guide element comprising
• a dosage device, arranged at least at one feed point, configured to feed a reduction agent for the exhaust gas aftertreatment into the guide element;
• at least one interference element arranged upstream of the feed point in the guide element, wherein the at least one interface element is configured to generate turbulence in the flow the exhaust gas that is intermixed with the reduction agent;
• at least one first guide portion configured to pass the exhaust gas in a first flow direction;
• at least one second guide portion configured to pass the exhaust gas in a second flow direction that is contrary to the first flow direction;
• wherein the at least one first guide portion and the at least one second guide portion are fluidically connected with each other via a third guide portion of the guide element, wherein the third guide portion redirects the exhaust gas from the first flow direction into the second flow direction, wherein the feed point and the interference element have at least one flow through opening for the exhaust gas are arranged in the third guide portion, and
• wherein at least one particle filter and at least one SCR catalytic converter are arranged in the aftertreatment device, wherein during operation of the combustion engine the at least one particle filter is flown through by exhaust gas of the combustion engine in the first flow direction, and the at least one SCR catalytic converter is flown through by exhaust gas of the combustion engine in the second flow direction.