Hydrocarbon emission scavenger
AssigneeMultisorb Technologies, Inc.
InventorsThomas J. Hurley, Samuel A. Incorvia
Life of this patent
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Abstract
A hydrocarbon adsorber and a thermoplastic resin combined and formed to a porous scavenger for insertion into the air intake system of a motor vehicle engine. The resulting porous scavenger adsorbs volatile hydrocarbon molecules from raw fuel remaining in the air intake when the engine is shut off. The adsorbed molecules are then stripped or purged from the scavenger and reintroduced into the air intake when the engine is next started.
Claims15
A hydrocarbon emission scavenger comprising:
- a generally ring shaped porous body comprising approximately 60-90% by weight of a thermoplastic resin and approximately 10-40% by weight of a hydrocarbon adsorbing material bound in the body;
- and
- a porous resin barrier ring disposed inside the body.
A hydrocarbon emission scavenger comprising a sintered porous body composed of 60-90% by weight of a thermoplastic resin and approximately 10-40% by weight of a hydrocarbon adsorbing material bound in the body, a porous resin barrier ring disposed inside the body;
- the porous body adsorbing hydrocarbon in a load cycle and releasing adsorbed hydrocarbon in a purge cycle and the porous body having a substantially constant Butane working capacity of at least about 2 grams after multiple load/purge cycles.
Dependencies are inferred from the claim text.