Vapor-adsorbent underhood blanket, system and method of reducing evaporative fuel emissions from a vehicle
AssigneeHoneywell International Inc.
InventorsGary Zulauf, Ronald P. Rohrbach
Life of this patent
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Abstract
A filter blanket, for placement on an underside of a vehicle hood, and for use in recycling residual engine vapors from within an engine's intake system, includes a filter element and a cover. The filter element includes a plurality of wicking fibers. Each of the wicking fibers has an internal cavity formed therein, and a longitudinally extending slot formed therein extending from the internal cavity to the outer fiber surface. The filter blanket also includes a hydrocarbon-absorbing material disposed within the internal cavities of the fibers. The filter blanket may be used in conjunction with a routing duct, as part of a fuel vapor recycling system.
Claims19
A vapor-adsorbent filter blanket, comprising:
- a filter element for placement on an underside of a vehicle hood, said filter element comprising a plurality of wicking fibers and comprising a hydrocarbon-adsorbent material;
- and
- a cover for placement below the filter element, the cover having a plurality of pore apertures formed therein for transmitting air therethrough and into the filter element, wherein
- each of the wicking fibers has an outer surface;
- each of the wicking fibers further has a longitudinally extending internal cavity formed therein, and has a longitudinally extending slot formed therein extending from the internal cavity to the outer fiber surface;
- and
- wherein said hydrocarbon-absorbent material is disposed within the internal cavities of the fibers.
A vapor-adsorbent filter blanket, comprising:
- a filter element for placement on an underside of a vehicle hood, said filter element comprising a plurality of fibers and also comprising a hydrocarbon-adsorbent material;
- said fibers comprising a plurality of wicking fibers, wherein
- each of the wicking fibers havine an outer surface;
- each of the wicking fibers further having a longitudinally extending internal cavity formed therein, and having a longitudinally extending slot formed therein extending from the internal cavity to the outer fiber surface;
- and
- wherein at least some of said hydrocarbon-absorbent material is disposed within the internal cavities of the fibers;
- and
- a cover for covering placement below the filter element, the cover having a plurality of pore apertures formed therein for transmitting air therethrough and into the filter element.
Dependencies are inferred from the claim text.