Electrically heatable honeycomb structure used in exhaust system for motor car, has electric resistor of layer stack in secondary region that is set larger than electric resistor of layer stack in primary region

摘要

The structure has an electrically heatable layer stack (5) that is partially formed from electrically conductive metal sheets (8) in bushing portion (6) in primary region (9). A honeycomb portion (10) is compressed in a secondary region (11) to avoid flow of exhaust gas. A contact surface (7) is provided within specific portion (4) and sheet stack in secondary region is electrically conductively connected. An electric resistor of layer stack in secondary region is set larger than electric resistor of layer stack in primary region.