Evaporative fuel control canister containing absorbent swelling by absorbing liquid fuel
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United States of America Patent
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Dec 22, 1992
Grant Date -
N/A
app pub date -
Sep 11, 1991
filing date -
Sep 12, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An evaporative fuel control canister for use in an internal combustion engine includes a canister main body having a vapor absorbing chamber and a liquid separate chamber. The vapor absorbing chamber has a first portion filled with a vapor absorbing material, and a second spatial portion. The liquid separate chamber has an expansible and contractible member containing a liquid absorbing material. The vapor absorbing chamber is adjacent to the liquid separate chamber in a ventilation state. The canister includes a vapor passage coupling a fuel tank and the liquid separate chamber, and a purge passage coupling the internal combustion engine and the liquid separate chamber. The purge passage has a first opening positioned in the expansible and contractible member, and a second opening positioned in the second spatial portion. The canister includes stopper members for maintaining a surface of the expansible and contractible member at a position which the extensible and contractible member does not reach the second opening so that the second spatial portion is always maintained.
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