# US 11,994,054 B2 · Reductant tank assembly with multiple connection tank header > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,994,054 B2 - Document ID: US11994054B2 - Status: Granted - Kind: B2 - Application number: 18/132,675 - Filed: 2023-04-10 - Published: 2023-08-03 - Granted: 2024-05-28 - Earliest claimed: 2021-10-08 - Assignees: Cummins Emission Solutions Inc. - Applicants: Cummins Emission Solutions Inc. - Inventors: Joe V. Hill; Bolaji Suberu - Web page: https://patentgrep.com/patent/US11994054B2 ## CPC - B01D 29/52: in parallel connection - F01N 3/2066: {Selective catalytic reduction [SCR]} - B01D 35/027: rigidly mounted in or on tanks or reservoirs (B01D35/04 takes precedence) - B01D 53/9431: {Processes characterised by a specific device} - F01P 3/20: Cooling circuits not specific to a single part of engine or machine (F01P3/22 takes precedence) - B01D 2201/204: Systems for applying vacuum to filters - F01N 2610/02: the substance being ammonia or urea - 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 2610/1433: Pumps - F01N 2900/18: said parameters being related to the system for adding a substance into the exhaust - F01N 2900/1806: Properties of reducing agent or dosing system - F01P 3/12: Arrangements for cooling other engine or machine parts - F01P 2060/00: Cooling circuits using auxiliaries - F01P 2060/16: Outlet manifold - Y02T 10/12: Improving ICE efficiencies - 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) - 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) - F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A header assembly for an aftertreatment system includes: a header including: a suction port, and a return port; a first splitting device configured to receive a first flow of reductant from the suction port and to split the first flow into a first inlet flow and a second inlet flow; a second splitting device configured to receive a first outlet flow and a second outlet flow and to provide a second flow to the return port of the header; a first inlet line configured to direct the first inlet flow to a first dosing module; a second inlet line configured to direct the second outlet flow to a second dosing module; a first outlet line configured to direct the first outlet flow to the second splitting device; and a second outlet line configured to direct the second outlet flow to the second splitting device. ## Claims ### Claim 1 A header assembly for an aftertreatment system, the header assembly comprising: a header configured to be directly attached to a wall of a reductant tank, the header comprising: a suction port extending through the header from a first surface of the header on a reductant tank side to a second surface of the header opposite the first surface, and a return port extending through the header from the first surface of the header to the second surface of the header; a first splitting device configured to receive a first flow of reductant from the suction port of the header and to split the first flow into a first inlet flow and a second inlet flow; a second splitting device configured to receive a first outlet flow and a second outlet flow and to provide a second flow to the return port of the header; a first inlet line coupled to the first splitting device and configured to direct the first inlet flow from the first splitting device to a first dosing module; a second inlet line coupled to the first splitting device and configured to direct the second inlet flow from the first splitting device to a second dosing module; a first outlet line coupled to the second splitting device and configured to direct the first outlet flow from the first dosing module to the second splitting device; and a second outlet line coupled to the second splitting device and configured to direct the second outlet flow from the second dosing module to the second splitting device. ### Claim 2 (depends on 1) The header assembly of claim 1, further comprising a suction line coupled to the suction port and the first splitting device and configured to direct the first flow from the header to the first splitting device. ### Claim 3 (depends on 2) The header assembly of claim 2, further comprising a return line coupled to the return port and the second splitting device and configured to direct the second flow from the second splitting device to the header. ### Claim 4 (depends on 1) The header assembly of claim 1, further comprising: a first inline filter coupled to the first inlet line and configured to filter the first inlet flow; and a second inline filter coupled to the second inlet line and configured to filter the second inlet flow. ### Claim 5 (depends on 1) The header assembly of claim 1, further comprising a heating system configured to heat the header. ### Claim 6 (depends on 5) The header assembly of claim 5, wherein the heating system comprises a coolant circulation system, the coolant circulation system comprising: a coolant line coupled to the header. ### Claim 7 (depends on 5) The header assembly of claim 5, wherein the heating system comprises an electric heater. ### Claim 8 (depends on 5) The header assembly of claim 5, wherein the first splitting device is directly connected to the suction port and the second splitting device is directly connected to the return port. ### Claim 9 (depends on 5) The header assembly of claim 5, wherein the first splitting device and the second splitting device are located in the header. ### Claim 10 (depends on 5) The header assembly of claim 5, wherein each of a first distance between the header and the first splitting device and a second distance between the header and the second splitting device are in a range of 10 millimeters to 100 millimeters, inclusive.