Abstract: An emission control device for air intake system includes an extending conduit (400) and an adsorbing element (300) disposed about the conduit, wherein the adsorbing element comprises a substrate and an adsorbent material disposed substantially throughout the substrate. When the conduit includes an indentation portion (403) and an opening (404) located about the indentation portion, the adsorbing element may be disposed on at least a portion of the indention to cover at least a portion of the opening, and the closure element (105) may be used to secure the adsorbing element to the indentation portion. The air intake tube of the air intake system may be designed to include an indentation portion and an opening located about the indentation portion such that an adsorbent sheet with adsorbent material disposed substantially therethrough may wrap around at least a portion of the indentation and cover at least a portion of the opening.

Abstract: An air intake emission control device includes a self -forming adsorbing element (200) comprising a front edge (301), a back edge (302), side edges (303) extending between the front and back edges and defining an air intake flow path, and a first locking component (301a) on the front edge, back edge, or both. The device further includes a second locking component (403) configured to engage the first locking component and retain the self-forming adsorbing element in a predetermined structure. The second locking component may be located on the adsorbing element itself such that the adsorbing element is self-formed and self-locked in the predetermined structure. Alternatively, the device may include an end cap (401) and the second locking structure may be located on the end cap. The device may be placed in air intake ductwork, in an extending conduit positioned between the an air intake ductwork and the air outlet ductwork, or both.