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US 8,800,276 B2Granted
Mixing system
AssigneeFord Global Technologies, LLC
InventorsMichael Levin, Furqan Zafar Shaikh
Life of this patent
Estimating the term…
Abstract
A mixing system is provided. The mixing system includes a housing defining a boundary of a mixing conduit including an expansion section with an injector mount and a reductant diverter extending into the conduit upstream of the injector mount in the expansion section. The mixing system further includes an atomizer with openings positioned in the housing and a helical mixing element positioned in the housing.
Claims17
A mixing system, comprising:
- a housing defining a boundary of a mixing conduit including an expansion section with an injector mount;
- a reductant diverter extending into the mixing conduit upstream of the injector mount in the expansion section;
- an atomizer with openings positioned in the housing;
- and
- a helical mixing element positioned in the housing including a double helix with smaller outlet cross-sectional area than inlet cross-sectional area.
2 more elements
A system, comprising:
- a mixing conduit housing including an expansion section having an injector mount;
- a reductant diverter upstream of the injector mount angled parallel with the housing in the expansion section;
- an atomizer downstream of the expansion section including fins extending only between a first and a second support extension and not fully spanning the housing;
- and
- a double-helix-shaped mixing element having unequal inlet and outlet cross-sectional areas, and positioned downstream of the atomizer, where helical mixing surfaces of the double-helix-shaped mixing element facing oncoming flow have a central groove.
2 more elements
A system, comprising:
- a mixing conduit housing including an expansion section having an injector mount;
- a reductant diverter upstream of the injector mount angled parallel with the housing in the expansion section;
- an atomizer downstream of the expansion section including fins extending only between a first and a second support extension and not fully spanning the housing;
- and
- a double-helix-shaped mixing element having unequal inlet and outlet cross-sectional areas, and positioned downstream of the atomizer, where the double-helix-shaped mixing element includes a first helical mixing surface and a second helical mixing surface, each of the helical mixing surfaces spirally extending axially through a portion of the housing with a pitch of the helical mixing surfaces decreasing in a downstream direction.
2 more elements
Dependencies are inferred from the claim text.