Catalytic converter with electrically heatable heating plate

[0039]The following description of the preferred embodiment(s) is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses.

[0040]FIG. 1 shows a sectional view through a layer stack 1. The layer stack 1 is formed from a plurality of corrugated metal foils 2 and a plurality of smooth metal foils 3 which are stacked on top of one another in alternating fashion. A plurality of flow ducts 6 through which exhaust gas may flow are formed between the metal foils 2, 3. The metal foils 2, 3 shown in FIG. 1 are by way of example and do not limit the choice of the metal foils.

[0041]The upper edge layer 4 and the lower edge layer 5 are both formed by smooth metal foils 3. On their respective outer sides, they have an insulating layer which electrically insulates the layer stack to the top and bottom. For this purpose, an electrically insulating material is applied for example to the edge layers 4, 5.

[0042]FIG. 2 shows a detail view of one of the edge lay