Electrically heatable honeycomb body for exhaust gas treatment having a plurality of heating elements
AssigneeVitesco Technologies GmbH
InventorsPeter Hirth, Christoph Pabst
Life of this patent
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Abstract
A honeycomb body includes: a first end face; a second end face, the honeycomb body being configured to permit gas flow through the honeycomb body from the first end face to the second end face in a flow direction; and a plurality of at least partially structured sheet metal layers, layered one on top of the other and entwined with each other to form gas-permeable channels. At least one of the plurality of sheet metal layers is reinforced or replaced by at least two elongate electrical heating elements arranged approximately parallel to one another with a spacing one behind the other in the flow direction and extending transversely to the flow direction.
Claims10
A honeycomb body (1), comprising:
- a first end face (8);
- a second end face (9), the honeycomb body (1) being configured to permit gas flow through the honeycomb body (1) from the first end face (8) to the second end face (9) in a flow direction (S);
- and
- a plurality of at least partially structured sheet metal layers (2, 3), layered one on top of the other and entwined with each other to form gas-permeable channels (4),
- wherein at least one of the plurality of sheet metal layers (2, 3) is replaced by at least two elongate electrical heating elements (11, 12) arranged approximately parallel to one another with a spacing one behind the other in the flow direction and extending transversely to the flow direction, and
- wherein the honeycomb body (1) comprises alternately arranged smooth (2) and corrugated (3) sheet metal layers intertwined with each other, and wherein at least one smooth sheet metal layer (2) is replaced by the heating elements (11, 12), such that the heating elements (11, 12) are sandwiched between two corrugated sheet metal layers.
A honeycomb body (1), comprising:
- a first end face (8);
- a second end face (9), the honeycomb body (1) being configured to permit gas flow through the honeycomb body (1) from the first end face (8) to the second end face (9) in a flow direction (S);
- and
- a plurality of at least partially structured sheet metal layers(2, 3), layered one on top of the other and entwined with each other to form gas-permeable channels (4),
- wherein at least one of the plurality of sheet metal layers(2, 3) is replaced by at least two elongate electrical heating elements (11, 12) arranged approximately parallel to one another with a spacing one behind the other in the flow direction and extending transversely to the flow direction, and
- wherein the honeycomb body (1) comprises alternately arranged ones of the smooth (2) and corrugated (3) sheet metal layers intertwined with each other, and wherein at least one corrugated sheet metal layer (3) is replaced by the heating elements (11, 12), such that the heating elements (11, 12) are sandwiched between two smooth sheet metal layers.
Dependencies are inferred from the claim text.