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US 2017/0284265 A1Published application
Scr device
AssigneeFord Global Technologies, LLC
InventorXiaogang Zhang
Life of this patent
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Abstract
Methods and systems are provided for an SCR device configured to store an amount of urea. In one example, a system may include rotating a plurality of plates in the SCR as exhaust gas flows through the SCR.
Claims20
A system comprising:
- a hollow cylindrical selective catalytic reduction device located along an exhaust passage comprising a plurality of plates configured to rotate via a rotatable rod as exhaust gas flows through of the device;
- and
- a passage configured to flow urea into the device, where the urea pools in a lower portion of the device.
A method comprising:
- rotating a plurality of plates in an SCR device as exhaust gas flows into the SCR device;
- and
- adjusting an amount of urea delivered to the SCR device based on a rotational speed of the plates.
An exhaust system comprising:
- an exhaust pipe;
- an SCR device comprising a hollow cylindrical body with first and second circular surfaces opposite one another with a curved surface located therebetween, and where the exhaust pipe is physically coupled to the curved surface via an inlet and an outlet at axially different heights;
- a plurality of plates located inside the SCR device physically coupled to a rotatable rod located along a rotational axis aligned with a center of the first and second surfaces;
- and
- a passage configured to flow urea to the SCR device, where the urea pools in a lower portion below a central axis of the SCR device.
2 more elements
Dependencies are inferred from the claim text.