EXHAUST-GAS TREATMENT DEVICE

摘要

An exhaust-gas treatment device includes a honeycomb body wound and/or stacked with at least partially structured sheet-metal layers forming channels through which an exhaust gas can flow in axial direction from an inlet side to an outlet side. A first section of the sheet-metal layers ends flush at a first end surface associated with at least one of the sides and a second section of the sheet-metal layers ends at a second end surface associated with at least one of the sides. A spacing is provided between the first and second end surfaces because a first axial length of the first section is greater than a second axial length of the second section. The spacing forms a receptacle receiving a heating body, producing a simple electrically heatable exhaust-gas treatment device into which a heating body can be integrated during or after production of the honeycomb body.

主权项

1. An exhaust-gas treatment device, comprising:
a honeycomb body through which an exhaust gas can flow; said honeycomb body having an inlet side, an outlet side, an axial direction and at least partially structured, wound or stacked sheet-metal layers forming channels configured to conduct an exhaust gas flow in said axial direction from said inlet side to said outlet side; said honeycomb body having a first end surface associated at least with said inlet side or said outlet side and a second end surface associated at least with said inlet side or said outlet side; said sheet-metal layers including a first section of sheet-metal layers ending flush at said first end surface and a second section of sheet-metal layers ending at said second end surface; said first section of sheet-metal layers having a first length in said axial direction, said second section of sheet-metal layers having a second length in said axial direction, said first length being greater than said second length defining a spacing between said first and second end surfaces; said spacing forming a receptacle; and a heating element disposed in said receptacle.