US Patent 11339699 Apparatus for the aftertreatment of exhaust gases

An apparatus for aftertreatment of exhaust gases of an internal combustion engine, with a housing through which the exhaust gas can flow from an inlet to an outlet, a flow path spatially delimited in a radial direction and through which gases can flow in an axial direction arranged inside the housing, a catalytic converter in the flow path, and a heating element arranged in the flow path for electrically heating the exhaust gas. An annular gap through which gases can flow is formed between the flow path and the inner wall of the housing. The distribution of the exhaust gas mass flow between the flow path and the annular gap is influenced by a control element.