20240018890. DOSING AND MIXING ASSEMBLIES FOR EXHAUST AFTERTREATMENT SYSTEM simplified abstract (Donaldson Company, Inc.)

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DOSING AND MIXING ASSEMBLIES FOR EXHAUST AFTERTREATMENT SYSTEM

Organization Name

Donaldson Company, Inc.

Inventor(s)

Corine Chauvin of Caen (FR)

Korneel De Rudder of Winksele (BE)

Anil C. Agar of Leuven (BE)

Bart Schellens of Overijse (BE)

DOSING AND MIXING ASSEMBLIES FOR EXHAUST AFTERTREATMENT SYSTEM - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240018890 titled 'DOSING AND MIXING ASSEMBLIES FOR EXHAUST AFTERTREATMENT SYSTEM

Simplified Explanation

The abstract describes a dosing and mixing assembly for an exhaust aftertreatment device. The assembly includes a conduit arrangement with overlapping, coaxial flow paths that join at a common flow path. The arrangement also includes a mixing region upstream of the overlapping flow paths, an impact region at the overlapping flow paths, and a merge region where the flow paths join. The outer flow path insulates the inner flow path at least at the impact region. Reactant can be dispensed into the inner flow path along a spray path that intersects the impact region.

  • The dosing and mixing assembly is designed for an exhaust aftertreatment device.
  • The assembly includes a conduit arrangement with overlapping, coaxial flow paths.
  • The flow paths join at a common flow path.
  • The arrangement has a mixing region upstream of the overlapping flow paths.
  • An impact region is located at the overlapping flow paths.
  • A merge region is where the flow paths join.
  • The outer flow path provides insulation to the inner flow path at the impact region.
  • Reactant can be dispensed into the inner flow path along a spray path.
  • The spray path intersects the impact region of the conduit arrangement.

Potential applications of this technology:

  • Exhaust aftertreatment systems in vehicles, such as cars, trucks, and buses.
  • Industrial exhaust systems in factories and power plants.
  • Marine exhaust systems in ships and boats.

Problems solved by this technology:

  • Efficient mixing of reactant with exhaust gases for effective aftertreatment.
  • Insulation of the inner flow path to prevent heat loss or reaction interference.
  • Controlled dispensing of reactant along a specific spray path.

Benefits of this technology:

  • Improved exhaust gas treatment efficiency.
  • Enhanced reduction of harmful emissions.
  • Better control and optimization of reactant dosing.
  • Increased durability and reliability of the aftertreatment device.


Original Abstract Submitted

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.

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