Fuel tank cap with charcoal canister
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United States of America Patent
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Sep 26, 2017
Issued Date -
N/A
app pub date -
Dec 8, 2014
filing date -
Sep 1, 2014
priority date (Note) -
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Abstract
The fuel tank cap with a charcoal canister includes a fuel tank inner cap and a fuel tank outer cap. A filling room with an upper opening is disposed in the center of the fuel tank inner cap. The fuel tank outer cap is disposed above the fuel tank inner cap. The fuel-absorption substrate is filled in the filling room, and a containing room is disposed at the bottom of the filling room. The fuel vapor can be absorbed by the filled charcoal completely, and the little liquid fuel entering from the fuel tank can be stored by the containing room and recycled back to the fuel tank when the gasoline engine stops. The filtering performance of charcoal powder can be enhanced since it is exempted from long-time fuel soaking.
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