Hydrocarbon adsorber for air induction systems

An inlet conduit for an engine air induction system, comprising:

• a plurality of openings located about the inlet conduit;
• a hydrocarbon vapor-adsorbent member disposed on an exterior surface of the inlet conduit, the hydrocarbon vapor-adsorbent member covering the plurality of openings;
• and
• a covering member secured over the hydrocarbon vapor-adsorbent member, the covering member sealing the hydrocarbon vapor-adsorbent member to the inlet conduit, wherein hydrocarbon vapors present in the air induction system after engine shut-down are substantially retained in the hydrocarbon vapor-adsorbent member until air flows through the air induction system after the engine starts, wherein the hydrocarbon vapor-adsorbent member comprises carbon containing media and wherein the carbon containing media further comprises a wood based carbon held within a pouch defined by woven or non-woven cloth fabric and the plurality of openings are disposed about an entire peripheral portion of the inlet conduit and the hydrocarbon vapor-adsorbent member and the covering member are disposed about an entire peripheral portion of the conduit.

A radial seal filter, comprising:

• a ring of filtration media;
• a closed end;
• an open end configured to sealingly engage an inlet conduit of an air induction system;
• and
• a hydrocarbon vapor-adsorbent member removably secured to the closed end, and hydrocarbon vapors present in the air induction system after engine shut-down are substantially retained in the hydrocarbon vapor-adsorbent member until air flows through the air induction system after the engine starts, wherein the hydrocarbon vapor-adsorbent member comprises carbon containing media and the carbon containing media is held within a pouch comprising woven or non-woven cloth fabric.

An air induction system for an engine, the system comprising:

• an intake conduit;
• a radial seal filter removable secured to the inlet conduit, the radial seal filter comprising:
• a ring of filtration media;
• a closed end;
• and an open end configured to sealingly engage the intake conduit;
• and
• a hydrocarbon vapor-adsorbent member fixedly secured to the intake conduit, and the hydrocarbon vapor-adsorbent member is located within the radial seal filter when the radial seal filter is secured to the inlet conduit and hydrocarbon vapors present in the air induction system after engine shut-down are substantially retained in the hydrocarbon vapor-adsorbent member until air flows through the air induction system after the engine starts, wherein the hydrocarbon vapor-adsorbent member comprises carbon containing media and the carbon containing media is held within a pouch comprising. woven or non-woven cloth fabric.

A radial seal filter, comprising:

• a ring of filtration media having a first end and a second end, the ring of filtration media defining a central cavity;
• a closed end secured to the second end such that fluid flow into or out of the central cavity occurs only at the first end or through an opening into the central cavity bounded by the first end or through the ring of filtration media;
• and
• a hydrocarbon vapor-adsorbent member secured to the closed end such that the hydrocarbon vapor-adsorbent member is disposed in the central cavity and spaced from an inner surface of the ring of filtration media.