Back to results
US 2017/0362977 A1Published application
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.
Claims20
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;
- and
- an exhaust inlet, the particulate-trapping material extending across the exhaust inlet.
2 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;
- 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;
- and
- 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.
1 more element
A method, comprising:
- during a soot loading phase, trapping soot from an exhaust stream of an engine via a filter paper loop inside a filter body of a particulate filter, the exhaust stream flowing through the filter paper and exiting through an outlet of the particulate filter;
- and
- responsive to a pressure difference across the particulate filter above a threshold, initiating regeneration of the particulate filter by activating a roller heater inside the filter body to move the filter paper loop past a heater of the roller heater.
Dependencies are inferred from the claim text.