Exhaust gas heater

An exhaust gas system for an internal combustion engine, the exhaust gas system comprising:

• at least one exhaust gas treatment unit;
• and,
• at least one exhaust gas heater arranged in an exhaust gas main flow direction upstream relative to said at least one exhaust gas treatment unit;
• said at least one exhaust gas heater defining a longitudinal axis and including:
• a carrier arrangement for accommodating an exhaust gas can flow therethrough in the direction of said longitudinal axis;
• at least one heating conductor supported on said carrier arrangement;
• said carrier arrangement including a carrier housing having a housing base arranged on a first axial side of said at least one heating conductor and extending transversely to the exhaust gas heater longitudinal axis, said housing base having a multiplicity of exhaust gas throughflow openings formed therein, said carrier arrangement further including a multiplicity of carrier elements on said housing base for supporting said at least one heating conductor:
• said at least one heating conductor being made of bent flat material defining a heating conductor profile;
• said heating conductor profile being meandering at least in regions thereof;
• and,
• said at least one heating conductor having flat end faces lying opposite from each other and having heating conductor broad sides lying opposite each other;
• said at least one heating conductor defining at least one heating conductor meandering field and having a plurality of mutually parallel meandering sections longitudinally extending in a direction of a meandering section longitudinal direction (M);
• each two mutually adjacent meandering sections having respective meandering section end regions and being connected to each other at one of said meandering section end regions thereof via a corresponding meandering section connecting section transverse to said meandering section longitudinal direction (M) and, between said meandering section end regions thereof and in at least a portion thereof, being configured with a multiplicity of consecutive wave crests in the meandering section longitudinal direction (M) for providing an undulating structure of said mutually adjacent meandering sections meandering sections;
• at least one of said carrier elements including a carrier pin fixed on said housing base, a carrier sleeve supported on said carrier pin and electrically insulating material interposed therebetween;
• and
• said carrier sleeve being fixed to one of said mutually adjacent meandering sections at one of said wave crests by material connection.