Method and system of purging evaporative emission control...

Details Method and system of purging evaporative emission control... Method and system of purging evaporative emission control...

2006-10-03

2006-10-03

Moulis, Thomas (Department: 3747)

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

C123S519000, C123S520000

Reexamination Certificate

active

07114492

ABSTRACT:
Method and system of purging evaporative emission control canister using heated purge air comprises a scrubber containing an activated carbon fiber material or carbon monolith selected to adsorb butane and/or pentane isomer vapors in low concentrations in air passing through the scrubber and to desorb the adsorbed butane and/or pentane isomers when purged with exhaust heated purge air. A method for reducing bleed emission to almost zero mg per day uses exhaust heated air purging of the scrubber.

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