# US 2019/0170039 A1 · Electrically heatable honeycomb body for exhaust gas treatment having a plurality of heating elements > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170039 A1 - Document ID: US20190170039A1 - Status: Published application - Kind: A1 - Application number: 16/322,807 - Filed: 2017-07-18 - Published: 2019-06-06 - Earliest claimed: 2016-08-04 - Assignees: Continental Automotive GmbH - Applicants: Continental Automotive GmbH - Inventors: Peter HIRTH; Christoph PABST - Web page: https://patentgrep.com/patent/US20190170039A1 ## CPC - F01N 3/2013: {using electric or magnetic heating means} - B01D 53/94: by catalytic processes - F01N 3/027: using electric or magnetic heating means - F01N 3/281: {Metallic honeycomb monoliths made of stacked or rolled sheets, foils or plates} - H05B 3/06: Heater elements structurally combined with coupling elements or holders - F01N 2240/16: an electric heater, i.e. a resistance heater - F01N 2330/02: Metallic plates or honeycombs, e.g. superposed or rolled-up corrugated or otherwise deformed sheet metal - F01N 2330/38: flow channels with means to enhance flow mixing,(e.g. protrusions or projections) - F01N 2590/08: for heavy duty applications, e.g. trucks, buses, tractors, locomotives - H05B 2203/005: using multiple resistive elements or resistive zones isolated from each other - H05B 2203/016: Heaters using particular connecting means - Y02A 50/20: Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters - Y02T 10/12: Improving ICE efficiencies - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## 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. ## Claims ### Claim at position 1 1-10. (canceled) ### Claim 11 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 reinforced or replaced by at least two elongate electrical healing 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. ### Claim 12 (depends on 11) The honeycomb body (1) as claimed in claim 11, 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 reinforced or replaced by heating elements (11, 12). ### Claim 13 (depends on 11) The honeycomb body (1) as claimed in claim 11, 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 reinforced or replaced by heating elements (11,12). ### Claim 14 (depends on 11) The honeycomb body (1) as claimed in claim 11, wherein the heating elements (11, 12) are heating conductors (14) with a metal jacket (16) surrounding them in an electrically insulated manner. ### Claim 15 (depends on 11) The honeycomb body (1) as claimed in claim 11, wherein the heating elements (11,12) have a round or flattened cross section (Q). ### Claim 16 (depends on 11) The honeycomb body (1) as claimed claim 11, wherein the electrical heating elements (11,12) have an electrically conductive cross section (q) of 0.02 to 3 mm2. ### Claim 17 (depends on 11) The honeycomb body (1) as claimed in claim 11, wherein the heating elements (11, 12) are configured for operating voltages of 24 to 48 V and configured to collectively receive an electrical power of 500 to 5000 W. ### Claim 18 (depends on 11) The honeycomb body (1) as claimed in claim 11, further comprising, in the sheet metal layers (2, 3), openings (5) and/or flow-guiding elements (6) configured to divert the gas into regions (7) of the honeycomb body (1) at least partially blocked by the healing elements (11,12), and out of said at least partially blocked regions. ### Claim 19 (depends on 11) The honeycomb body (1) as claimed in claim 11, wherein the honeycomb body (1) comprises at least three heating elements (11, 12, 13), each of which having different spacings (A1, A1) with respect to one another in the flow direction (S). ### Claim 20 (depends on 11) The honeycomb body (1) as claimed in claim 11, wherein the sheet metal layers (2,3) are connected to each other and/or to the heating elements (11,12) at least in partial regions by connections (19) produced by a joining technique. ### Claim 21 (depends on 20) The honeycomb body (1) according to claim 20, wherein the joining technique is soldering.