Emitec Gesellschaft Fuer Emissionstechnologie Mbh

Continental Automotive Gmbh

Thomas Haerig

Peter Hirth

Ferdi Kurth

Rolf Brueck

A method for influencing a fluid flow in a fluid line is provided. The fluid line has a wall and a honeycomb body arranged in the fluid line with a fluid inlet side and a fluid outlet side. The honeycomb body has a honeycomb structure with a cross section area and with ducts through which the fluid flow can flow from the fluid inlet side to the fluid outlet side. The honeycomb body has an outer boundary. The honeycomb structure has a circumferential outer zone close to the boundary and a central zone arranged within the outer zone. The outer zone includes at most 70% of the cross section area. The method includes providing the fluid flow upstream of the honeycomb body, entry of the fluid flow into the honeycomb body, and at least partial redirection of the fluid flow outwards in a radial direction.

Method for influencing a fluid flow

An electrically heatable honeycomb body assembly includes an electrical connection of sheet metal layers at a connection pin. A honeycomb body has a metal casing with an inner periphery, through which the connection pin is led in a bushing and electrically insulated. The sheet metal layers are alternately coarsely structured and finely structured or smooth sheets together forming a stack with uppermost and lowermost layers and channels for an axial gas flow between the layers. The connection pin runs radially approximately perpendicular to the layers and is metallically connected to at least two or all of the layers through at least one intermediate piece. The uppermost sheet metal layer preferably runs approximately parallel to the metal casing over at least 35% of the inner periphery and is separated therefrom only by an air gap. Simple production of an operationally safe and very uniformly electrically heatable honeycomb body is provided.

Electrically heatable honeycomb body assembly having an electrical connection of a plurality of sheet metal layers

A honeycomb body includes sheet metal layers forming a central current path to a radial connecting pin. A metal casing has an inner periphery and a feedthrough guiding and insulating the pin. The layers are alternate coarsely structured and finely structured or smooth sheets forming a stack with uppermost and lowermost layers forming axial gas channels. The pin is metallically connected to two or all of the layers directly or through an intermediate piece by an electrically conductive or welded connection. The current path has an electrical resistance per unit length in the connection region being greater than an average electrical resistance per unit length in the stack. The uppermost layer runs approximately parallel to the casing over 35% or 40% of the inner periphery and is separated from the casing by an air gap. Simple manufacture of a highly uniform, reliably operating, electrically heatable honeycomb body is thus possible.

Electrically heatable honeycomb body with multiple sheet metal layers electrically connected with a connecting pin

An electrical connection for an electrical component or electrically heatable honeycomb body, in an exhaust system of an internal combustion engine includes an electrical conductor passing through a metallic jacket of the exhaust system, a bushing and an insulating layer and having an outer connection section with circular cross section. The connection section has a contact surface for connection to a supply line connection piece. The bushing and/or electrical conductor near the bushing can absorb torques up to 3.6, 4.5 or 7 Nm per cmof contact surface acting on the connection section and/or an internal or external thread in circumferential direction, by shaping the electrical conductor near the bushing or using structures and/or changes to the cross section or a form-locking construction of the electrical conductor and the bushing. Damage to electrical exhaust components due to external torques, disassembly and maintenance can thus be avoided.

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Neunkirchen-Seelscheid, Germany

Thomas Haerig