APPARATUS AND METHOD FOR HEATING A DEVICE FOR EXHAUST GAS AFTER-TREATMENT

The invention relates to a device for heating an exhaust gas after-treatment unit in a vehicle which, besides a combustion engine, also comprises an electric motor as a drive source, wherein at leastone electric heating element (1, 7) is provided, which, in order to heat a honeycomb body (5) through which exhaust gas can flow, is arranged in a cavity (6) formed in the honeycomb body (5), whereinthe honeycomb body (5) is formed from a plurality of metal films stacked one on top of the other, which metal films form a plurality of flow channels between one another, wherein a flow can pass through the flow channels along an axial direction, and wherein the honeycomb body (5) has a cavern (6) running in the radial direction, which cavern receives a heating element (1, 7). The invention additionally relates to a method for heating. 本发明涉及一种用于加热车辆中的排气后处理单元的设备，该车辆除了内燃发动机之外还包括电动马达作为驱动源，其中提供至少一个电加热元件(1，7)，该至少一个电加热元件布置在形成于蜂窝体(5)中的腔体(6)中，以便加热排气能够流过的蜂窝体(5)，其中，该蜂窝体(5)由彼此上下堆叠的多个金属箔片形成，这些金属箔片在它们之间形成多个流动通道，流体能够沿轴向方向穿过这些流动通道，其中