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An exhaust gas post treatment system for an internal combustion engine, including an intake device for taking hydrocarbons into an exhaust gas pipe carrying the exhaust process gas from the internal combustion engine and a treatment device through which exhaust process gas flows downstream of the in

An exhaust gas post treatment system for an internal combustion engine, including an intake device for taking hydrocarbons into an exhaust gas pipe carrying the exhaust process gas from the internal combustion engine and a treatment device through which exhaust process gas flows downstream of the intake location and which increases the exhaust process gas temperature by oxidation of the hydrocarbons taken in. An exhaust gas post treatment system and a method for operating the same, in that the treatment device has catalytically coated components, the hydrocarbons are at least partly evaporated in the intake device and are modified chemically by cracking reactions and/or by partial oxidation, and the proportion of platinum, at least in a subregion of the catalytic coating of the components, is less than 50% of the overall mass of all the catalytically active substances in this sub region of the coating.

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1. An exhaust gas aftertreatment device for an internal combustion engine, comprising an introduction device comprising a burner, a fuel-and-air supply device, a combustion chamber, an exhaust gas line, an injection device for injecting hydrocarbons into the exhaust gas line, and an outlet, whereint

1. An exhaust gas aftertreatment device for an internal combustion engine, comprising an introduction device comprising a burner, a fuel-and-air supply device, a combustion chamber, an exhaust gas line, an injection device for injecting hydrocarbons into the exhaust gas line, and an outlet, whereinthe injection device is configured to inject a quantity of hydrocarbons that is injected separately from any fuel output by the fuel-and-air supply device,the introduction device is configured to at least partially evaporate and chemically modify the hydrocarbons injected from the injection device by at least one of crack reactions and partial oxidation, while suppressing ignition of the injected hydrocarbons,the introduction device is configured for joining to an exhaust pipe carrying a process exhaust gas output from an internal combustion engine for introducing the at least partially evaporated and chemically modified hydrocarbons into the process exhaust gas, andthe introduction device is free of a catalytic coating between at least the combustion chamber and the outlet. 2. The exhaust gas aftertreatment device according to claim 1, wherein an outlet of the injection device is arranged within the exhaust gas line. 3. The exhaust gas aftertreatment device according to claim 1, wherein an outlet of the injection device is arranged downstream from the combustion chamber. 4. An exhaust gas aftertreatment device for an internal combustion engine, comprising an introduction device comprising a burner, a fuel-and-air supply device, a combustion chamber, an exhaust gas line, an injection device for injecting hydrocarbons into the exhaust gas line, and an outlet, whereinthe injection device is configured to inject a quantity of hydrocarbons that is injected separately from any fuel output by the fuel-and-air supply device,the introduction device is configured to at least partially evaporate and chemically modify the hydrocarbons injected from the injection device by at least one of crack reactions and partial oxidation, while suppressing ignition of the injected hydrocarbons,the introduction device is configured for joining to an exhaust pipe carrying a process exhaust gas output from an internal combustion engine for introducing the at least partially evaporated and chemically modified hydrocarbons into the process exhaust gas, andthe introduction device is configured to output the partially evaporated and chemically modified hydrocarbons, via the introduction device outlet, without the partially evaporated and chemically modified hydrocarbons having been reacted by a catalytic coating. 5. The exhaust gas aftertreatment device according to claim 4, further comprising a Venturi device arranged in the exhaust gas line in the region of an outlet of the injection device, the arrangement of the Venturi device being one that promotes intermixing of hydrocarbons injected from the injection device with a burner exhaust gas while suppressing ignition thereof. 6. The exhaust gas aftertreatment device according to claim 4, wherein an outlet of the injection device is arranged within the exhaust gas line. 7. The exhaust gas aftertreatment device according to claim 4, wherein an outlet of the injection device is arranged downstream from the combustion chamber. 8. An exhaust gas aftertreatment system for an internal combustion engine, comprising an introduction device for introducing hydrocarbons into an exhaust pipe carrying a process exhaust gas output from an internal combustion engine, anda treatment device downstream of an outlet of the introduction device, the treatment device configured for the process exhaust gas to flow therethrough and to increase the process exhaust gas temperature by oxidation of hydrocarbons introduced from the introduction device, whereinthe introduction device comprises a burner, a fuel-and-air supply device, a combustion chamber, an exhaust gas line, an injection device for injecting hydrocarbons into the exhaust gas line, and the outlet that opens into the exhaust pipe,the treatment device comprises at least one catalytically coated component, the catalytic coating comprising a platinum fraction that, at least in a part-region of the catalytic coating, amounts to less than 50% of the overall mass of all catalytically active substances in the part-region of the catalytic coating,the injection device is configured to inject a quantity of hydrocarbons that is injected separately from any fuel output by the fuel-and-air supply device,the introduction device is configured to at least partially evaporate and chemically modify the hydrocarbons injected from the injection device by at least one of crack reactions and partial oxidation, while suppressing ignition of the injected hydrocarbons, andthe system is configured such that the hydrocarbons partially evaporated and chemically modified by the introduction device first contact a catalytic coating while in the presence of process exhaust gas output from the internal combustion engine. 9. The exhaust gas aftertreatment system according to claim 8, wherein the part-region of the catalytic coating of the at least one catalytically coated component of the treatment device comprises at least 20% of the overall mass of the catalytic coating on the at least one catalytically coated component. 10. The exhaust gas aftertreatment system according to claim 8, wherein the part-region comprises an entirely catalytically coated component, a partially catalytically coated component, or a plurality of catalytically coated components. 11. The exhaust gas aftertreatment system according to claim 8, wherein the part-region comprises a zonal coating of a catalytically coated component, the zonal coating comprising a front section of the catalytically coated component in a flow direction of the process exhaust gas. 12. The exhaust gas aftertreatment system according to claim 8, wherein a Venturi device is arranged in the exhaust gas line in the region of an outlet of the injection device. 13. The exhaust gas aftertreatment system according to claim 8, further comprising the exhaust pipe, wherein the burner, the exhaust gas line, and the injection device are arranged as an integrated housing, andthe housing is joined to the exhaust pipe. 14. The exhaust gas aftertreatment system according to claim 8, wherein a quenching device, a Venturi device, or a combination thereof, is present in the region of the introduction device outlet. 15. The exhaust gas aftertreatment system according to claim 8, further comprising a gas-conducting device having an outlet for issuing process exhaust gas into the exhaust gas line at a location upstream of the introduction device outlet. 16. The exhaust gas aftertreatment system according to claim 8, wherein the platinum fraction, at least in the part-region of the catalytic coating, amounts to less than 5% of the overall mass of all catalytically active substances, at least in a part-region of the treatment device. 17. The exhaust gas aftertreatment system according to claim 8, wherein a Venturi device is arranged in the exhaust gas line in the region of an outlet of the injection device, and a Venturi device is arranged in the region of the introduction device outlet. 18. The exhaust gas aftertreatment system according to claim 8, wherein the injection device has an atomizer nozzle. 19. The exhaust gas aftertreatment system according to claim 18, wherein the atomizer nozzle of the injection device is a pressurized atomizer nozzle, or an airstream atomizer nozzle. 20. The exhaust gas aftertreatment system according to claim 8, further comprising the exhaust pipe, wherein the exhaust gas line projects into the exhaust pipe, with the introduction device outlet positioned in the exhaust pipe. 21. The exhaust gas aftertreatment system according to claim 20, wherein the exhaust gas line is introduced concentrically into the exhaust pipe with the introduction device outlet arranged for introducing hydrocarbons into the exhaust pipe in a flow direction of the process exhaust gas through the exhaust pipe. 22. The exhaust gas aftertreatment system according to claim 8, wherein the at least one catalytically coated component comprises a catalyst substrate, a particle filter, or a combination thereof. 23. The exhaust gas aftertreatment system according to claim 22, wherein the catalytic coating of the at least one catalytically coated component comprises a unitary coating, a zonal coating, or a combination thereof. 24. The exhaust gas aftertreatment system according to claim 23, wherein the at least one catalytically coated component comprises both a catalytically coated catalyst substrate and a catalytically coated particle filter downstream of the catalyst substrate, andthe catalytic coating of at least the catalyst substrate is configured to oxidize a quantity of partially evaporated and chemically modified hydrocarbons output from the introduction device, to thereby increase the process exhaust gas temperature to a temperature necessary for the regeneration of the particle filter. 25. The exhaust gas aftertreatment system according to claim 8, wherein the catalytic coating of the part-region comprises a noble metals fraction having a total noble metal mass, based on the at least one catalytically coated component volume, in the range from 0.1-10 g/L. 26. The exhaust gas aftertreatment system according to claim 25, wherein the noble metals fraction amounts, in the overall mass of all catalytically active substances of the part-region of the treatment device, to more than 10%. 27. The exhaust gas aftertreatment system according to claim 25, wherein the catalytic coating comprises a palladium fraction that amounts to at least 50% of the overall mass of all noble metals in the part-region of the treatment device. 28. The exhaust gas aftertreatment system according to claim 25, wherein the platinum content of the catalytic coating of the part-region amounts to less than 1% of the overall mass of all catalytically active substances of the part-region of the treatment device. 29. A method for operating an exhaust gas aftertreatment system for an internal combustion engine according to claim 8, comprising injecting hydrocarbons into the exhaust gas line from the injection device;generating a basic thermal power with the burner, the basic thermal power having a lower limit sufficient to supply an energy quantity for evaporating a hydrocarbon quantity; andat least partially evaporating and chemically modifying a quantity of hydrocarbons injected from the injection device by at least one of crack reactions and partial oxidation, while also suppressing ignition of the hydrocarbon quantity. 30. The method according to claim 29, further comprising oxidizing, by the catalytically active coating of the part-region of the treatment device, a quantity of the hydrocarbons injected from the injection device after the injected hydrocarbons have been at least partially evaporated and chemically modified. 31. The method according to claim 29, further comprising furnishing, by the burner, a basic thermal power sufficient to additionally heat the process exhaust gas to a stipulated temperature.