# US 9,038,374 B2 · Delivery device and tank configuration for a reducing agent and motor vehicle having a tank configuration > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,038,374 B2 - Document ID: US9038374B2 - Status: Granted - Kind: B2 - Application number: 13/417,500 - Filed: 2012-03-12 - Published: 2012-07-26 - Granted: 2015-05-26 - Earliest claimed: 2009-09-11 - Assignees: EMITEC Gesellschaft fuer Emissionstechnologie mbH - Applicants: Rolf Brück; Jan Hodgson; Sven Schepers - Inventors: Rolf Brück; Jan Hodgson; Sven Schepers - Web page: https://patentgrep.com/patent/US9038374B2 ## CPC - F01N 3/2066: {Selective catalytic reduction [SCR]} - B60K 13/04: concerning exhaust - F01N 13/16: Selection of particular materials - B60K 2015/03427: {for heating fuel, e.g. to avoiding freezing} - F01N 2610/10: the substance being heated, e.g. by heating tank or supply line of the added substance - F01N 2610/1406: Storage means for substances, e.g. tanks or reservoirs - F01N 2610/1426: Filtration means - F01N 2610/1473: Overflow or return means for the substances, e.g. conduits or valves for the return path - F01N 2900/1814: Tank level - 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 - Y10T 137/6416: With heating or cooling of the system - 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) - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A delivery device for a reducing agent includes a metallic housing, at least one externally mounted metal suction pipe and an external pressure port. A metallic base plate, at which at least one pump and ducts are provided, is disposed inside the housing. The suction pipe, the housing, the metallic base plate, and the pump are in heat-conducting contact with each other. An elongate heating element is disposed next to the suction pipe. A tank configuration for a reducing agent and a motor vehicle having a tank configuration, are also provided. ## Claims ### Claim 1 A tank configuration, comprising: a reducing agent tank having a tank opening and a tank bottom; a delivery device for a reducing agent, said delivery device closing off said tank opening and said delivery device including: a metallic housing disposed at least partially within said reducing agent tank and having an outside, at least one metallic suction pipe fastened to said outside of said metallic housing inside said reducing agent tank and extending toward said tank bottom and said metallic housing having an external pressure line port and an interior; a separate metallic base plate disposed in said metallic housing and extending through said interior of said metallic housing; at least one pump and ducts mounted on said metallic base plate and fluidically connected through said metallic base plate; said at least one metallic suction pipe, said metallic housing, said metallic base plate and said at least one pump being in heat-conducting contact with one another by metallic connecting points; and an elongate heating element disposed parallel to said at least one metallic suction pipe; said metallic housing and said at least one metallic suction pipe configured to transfer heat from said elongate heating element to the environment of the delivery device inside said reducing agent tank. ### Claim 2 (depends on 1) The tank configuration according to claim 1, wherein said ducts are formed in said metallic base plate, and said at least one suction pipe, said at least one pump and said line port are fluidically connected by said ducts in said metallic base plate. ### Claim 3 (depends on 1) The tank configuration according to claim 1, which further comprises a metallic filter housing connected in heat-conducting fashion to said base plate, and a filter configured to be disposed in said metallic filter housing. ### Claim 4 (depends on 3) The tank configuration according to claim 3, wherein said at least one suction pipe and said heating element extend together into said metallic filter housing. ### Claim 5 (depends on 1) The tank configuration according to claim 1, which further comprises a metallic coarse filter formed on said at least one suction pipe for particles larger than 30 μm. ### Claim 6 (depends on 5) The tank configuration according to claim 5, wherein said at least one suction pipe has a suction end, and said metallic coarse filter includes a pot-shaped screen surrounding said suction end. ### Claim 7 (depends on 1) The tank configuration according to claim 1, which further comprises a reducing agent tank having a reducing agent fill level, and at least one level sensor electrode fastened to said suction pipe for determining said reducing agent fill level. ### Claim 8 (depends on 1) The tank configuration according to claim 1, wherein said heating element is a PTC (positive temperature coefficient) heating element. ### Claim 9 (depends on 1) The tank configuration according to claim 1, wherein said at least one suction pipe includes an inner conduit pipe and an outer holding pipe, and said heating element is disposed between said inner conduit pipe and said outer holding pipe. ### Claim 10 (depends on 9) The tank configuration according to claim 9, wherein said metallic housing and said outer holding pipe are formed in one piece. ### Claim 11 (depends on 1) The tank configuration according to claim 1, wherein said metallic housing and said at least one suction pipe are formed in one piece. ### Claim 12 (depends on 1) The tank configuration according to claim 1, which further comprises a return line having a return valve, said return valve configured to be operated as a heater for heating reducing agent. ### Claim 13 (depends on 1) The tank configuration according to claim 1, wherein more than 50% of said metallic housing is disposed below said tank opening. ### Claim 14 (depends on 1) A motor vehicle, comprising: an internal combustion engine; an exhaust system associated with said internal combustion engine and constructed to perform a selective catalytic reduction of nitrogen oxide compounds; and a tank configuration according to claim 1. ### Claim 15 (depends on 1) The tank configuration according to claim 1, wherein said metallic housing and said at least one metallic suction pipe are configured to transfer enough heat from said elongate heating element to melt ice inside said reducing agent tank. ### Claim 16 (depends on 1) The tank configuration according to claim 1, which further comprises a clamp pressing said elongate heating element against said suction pipe.