Filter, regeneration and soot-removing systems and applications
AssigneeStarfire Systems, Inc.
InventorWalter J. Sherwood
Life of this patent
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Abstract
The invention provides a filter system, a regeneration system, a combined soot-removing system and applications for the systems. The filter system may act as a purifier and a muffler for heavy and light duty diesel vehicles. The invention is a unique dual pass filter system that removes particulates and nitrogen oxides in successive passes before the gas exits the filter. The regeneration system includes an electric-powered heat source for safety and better control of the regeneration process. A motor vehicle application is also disclosed.
Claims28
A filter system for removing soot from exhaust of an exhaust producing device, the filter system comprising one or more attachable units for varying the size of the filter system, each unit including:
- a housing;
- a particulate filter section positioned within the housing;
- and
- a nitrogen oxide filter section having a gas-impervious inner cylinder spaced within the particulate filter section and a nitrogen-oxide removing catalyst positioned within the inner cylinder.
A filter system for removing soot from exhaust of an exhaust producing device, the filter system comprising one or more attachable units for varying the size of the filter system, each unit including:
- means for housing filter components;
- means for filtering particulates positioned within the means for housing;
- and
- means for filtering nitrogen oxide including means for directing passage of gas, spaced within the means for filtering particulates, longitudinally through means for catalytically removing nitrogen oxide positioned within the means for directing passage of gas.
A filter system for removing soot from exhaust of an exhaust producing device, the filter system comprising one or more attachable units for varying the size of the filter system, each unit including:
- a housing having an outer metal shell and a coupling adapted to attach a unit to an adjacent unit;
- a particulate filter positioned within the housing;
- a porous cylinder for supporting an inner portion of the particulate filter;
- a gas-impervious inner cylinder spaced within the porous cylinder;
- and
- a nitrogen-oxide removing catalyst positioned within the inner cylinder,
- wherein exhaust gases pass radially through the particulate filter and longitudinally through the inner cylinder containing the nitrogen-oxide removing catalyst.
Dependencies are inferred from the claim text.