Device for preventing outflow of a fuel vapor from a fuel tank
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United States of America Patent
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Oct 10, 1989
Grant Date -
N/A
app pub date -
Feb 1, 1988
filing date -
Feb 2, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for preventing an outflow of a fuel vapor from a fuel tank comprising a breather pipe which connects the upper interior of the fuel tank to a charcoal canister. A float-valve assembly is mounted on the upper wall of the fuel tank. This assembly comprises a breather passage connected to the charcoal canister via the breather pipe, a normally closed solenoid valve arranged in the breather passage, and a float normally allowing the breather passage to be open to the interior of the fuel tank. When the replenishment of the fuel tank is carried out, the solenoid valve is opened to feed fuel vapor in the fuel tank into the charcoal canister.
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