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A process for coating a carrier body, in particular a honeycomb body through which a fluid can flow, with a coating material which is applied to the carrier body, provides a spatial temperature distribution of the coating material in the carrier body being inhomogeneous during application and/or aft

A process for coating a carrier body, in particular a honeycomb body through which a fluid can flow, with a coating material which is applied to the carrier body, provides a spatial temperature distribution of the coating material in the carrier body being inhomogeneous during application and/or after application. A carrier body has a spatially inhomogeneous coating thickness and an apparatus is provided for the inhomogeneous coating of a carrier body. Efficient catalysis is ensured and superfluous coating material is saved at locations where it is not required.

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What is claimed is: 1. A process for coating a carrier body, which process comprises the following steps: applying a coating material to the carrier body, the carrier body being a honeycomb body through which a fluid can flow and which is a catalytic converter for purifying exhaust gasses of an int

What is claimed is: 1. A process for coating a carrier body, which process comprises the following steps: applying a coating material to the carrier body, the carrier body being a honeycomb body through which a fluid can flow and which is a catalytic converter for purifying exhaust gasses of an internal combustion engine; and providing an inhomogeneous spatial temperature distribution of the coating material in the carrier body during and/or after the applying step, resulting in a spatially inhomogeneous coating thickness distribution in the carrier body, the temperature distribution being provided with a temperature difference of at least 2° C. 2. The process according to claim 1, which further comprises making the spatial temperature distribution inhomogeneous in an axial direction of the carrier body. 3. The process according to claim 1, which further comprises making the spatial temperature distribution inhomogeneous in a radial direction of the carrier body. 4. The process according to claim 1, which further comprises providing a temperature difference in the temperature distribution by at least one of local cooling and local heating of the carrier body. 5. The process according to claim 1, which further comprises providing a temperature difference in the temperature distribution by at least one of local cooling and local heating of the coating material. 6. The process according to claim 1, which further comprises at least one of heating and cooling at least one of the coating material and the carrier body at various locations. 7. The process according to claim 1, which further comprises locally heating the carrier body by electromagnetic radiation. 8. The process according to claim 1, which further comprises locally heating the carrier body by electromagnetic induction or microwaves. 9. The process according to claim 1, which further comprises locally heating at least one of the carrier body and the coating material by thermal radiation. 10. The process according to claim 1, which further comprises at least one of heating the carrier body by local heat contact and cooling the carrier body by local refrigeration contact. 11. The process according to claim 1, which further comprises locally heating or cooling at least one of the carrier body and the coating material with a stream of fluid. 12. The process according to claim 1, which further comprises carrying out the applying step by applying the coating material in liquid form. 13. The process according to claim 1, which further comprises carrying out the applying step by applying the coating material as a suspension. 14. The process according to claim 1, which further comprises carrying out the applying step by applying a washcoat as the coating material. 15. The process according to claim 1, wherein the coating material includes catalytically active substances. 16. The process according to claim 1, wherein the coating material includes precious metals. 17. A process for coating a carrier body, which process comprises the following steps: applying a coating material to the carrier body, the carrier body being a honeycomb body through which a fluid can flow and which is a catalytic converter for purifying exhaust gasses of an internal combustion engine; providing an inhomogeneous spatial temperature distribution of the coating material in the carrier body during and/or after the applying step, resulting in a spatially inhomogeneous coating thickness distribution in the carrier body; and placing the carrier body, prior to the step of applying the coating material, at a temperature different than a temperature of the coating material. 18. The process according to claim 17, which further comprises providing a temperature difference of at least 5° C. in the temperature distribution. 19. The process according to claim 17, which further comprises providing a temperature difference of at least 15° C. in the temperature distribution. 20. A process for coating a carrier body, which process comprises the following steps: applying a coating material to the carrier body, the carrier body being a honeycomb body through which a fluid can flow and which is a catalytic converter for purifying exhaust gasses of an internal combustion engine; providing an inhomogeneous spatial temperature distribution of the coating material in the carrier body during and/or after the applying step, resulting in a spatially inhomogeneous coating thickness distribution in the carrier body; and providing the carrier body with a spatially inhomogeneous temperature distribution before the step of applying the coating material.