Invention Grant
- Patent Title: Dosing and mixing assemblies for exhaust aftertreatment system
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Application No.: US17642620Application Date: 2020-06-30
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Publication No.: US11773763B2Publication Date: 2023-10-03
- Inventor: Corine Chauvin , Korneel De Rudder , Anil C. Agar , Bart Schellens
- Applicant: Donaldson Company, Inc.
- Applicant Address: US MN Bloomington
- Assignee: Donaldson Company, Inc.
- Current Assignee: Donaldson Company, Inc.
- Current Assignee Address: US MN Minneapolis
- Agency: Merchant & Gould P.C.
- Priority: EP 197416 2019.09.13
- International Application: PCT/US2020/040293 2020.06.30
- International Announcement: WO2021/050157A 2021.03.18
- Date entered country: 2022-03-11
- Main IPC: F01N3/28
- IPC: F01N3/28 ; F01N3/20

Abstract:
A dosing and mixing assembly for an exhaust aftertreatment device includes a conduit arrangement defining overlapping, coaxial flow paths that join at a common flow path. The conduit arrangement defines a mixing region upstream of the overlapping, coaxial flow paths, an impact region at the overlapping, coaxial flow paths, and a merge region where the coaxial flow paths join. The outer of the coaxial flow paths insulates the inner of the flow paths at least as the impact region. Reactant can be dispensed into the inner flow path along a spray path that intersects the impact region of the conduit arrangement. A spray protector can be provided at or upstream of the mixer to inhibit swirling of reactant at the doser nozzle.
Public/Granted literature
- US20220341357A1 DOSING AND MIXING ASSEMBLIES FOR EXHAUST AFTERTREATMENT SYSTEM Public/Granted day:2022-10-27
Information query
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