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US 10,385,746 B2Granted
Diesel Particulate filter regeneration system
AssigneeFord Global Technologies, LLC
InventorXiaogang Zhang
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for regeneration of a particulate filter including a filter body having a filter paper looped along a plurality of rolling guides. At least one rolling guide may be a roller heater having a motor and a heater. Activation of the roller heater based on a pressure difference across the particulate filter regenerates the particulate filter during a regeneration phase and positions a regenerated section of the filter paper for trapping soot in a subsequent soot loading phase.
Claims15
A particulate filter, comprising:
- a filter body;
- a first rolling guide and a roller heater each housed within the filter body;
- a particulate-trapping material extending from the first rolling guide to the roller heater;
- an exhaust inlet, the particulate-trapping material extending across the exhaust inlet, where the exhaust inlet is positioned upstream of the particulate-trapping material;
- an exhaust outlet, where the exhaust outlet extends in a direction perpendicular to the exhaust inlet;
- and
- a cavity, where the cavity is surrounded by the filter body, and where the cavity is surrounded by the particulate-trapping material, the cavity aligned with the exhaust outlet and the cavity directly accessible from an exterior of the filter body via the exhaust outlet.
4 more elements
A system, comprising:
- a particulate filter including a body having an inlet at a top surface of the body and an outlet on a vertical surface of the body, the vertical surface perpendicular to the top surface, wherein the body surrounds a cavity;
- a filter paper looped across a plurality of rolling guides inside the body, a first rolling guide of the plurality of rolling guides including a motor and a heater, the filter paper extending across the inlet, where the first rolling guide is offset from an opening of the outlet, and where the outlet is positioned below the inlet and above the first rolling guide, and wherein the filter paper surrounds the outlet and the cavity, the cavity being directly accessible from an exterior of the body via the outlet;
- an exhaust pipe coupled to the particulate filter with exhaust from the exhaust pipe entering the particulate filter through the inlet, exhaust flowing across the filter paper, and exhaust flowing out of the particulate filter through the outlet, exhaust flow through the inlet being perpendicular to exhaust flow through the outlet.
Dependencies are inferred from the claim text.