| 摘要 |
The present invention relates to a structure of a canister, which collects a fuel evaporated in a fuel tank and purges the evaporated fuel by an engine. The structure of the canister includes: the canister; a three way valve including two inlets and one outlet, whose one end is connected to the canister and the other end is connected to the canister through a supply line connected to the outlet; a first line wherein outer air flows inside through one end and the other end is connected to one among the inlets of the three way valve; and a second line connected to a heat generator in order for the outer air flowing inside to be heated, wherein the outer air flows inside through one end and the other end is connected to the other one among the inlets of the three way valve. The outer air flowing inside through the first line cools the canister when the fuel is collected. The three way valve is controlled in order for the outer air heated through the second line to be heated when the fuel is purged. A fourth line is additionally connected in order for the outer air passing through the three way valve to be supplied to a fuel tank, and a case including a phase transition substance, which absorbs the heat when the outer air of a predetermined temperature or greater, is connected to the forth line. The structure of the canister improves performance of the canister by maintaining an optimal temperature according to the collection or purge of the canister. The structure of the canister additionally includes the fourth line capable of cooling the outer air by using the phase transition substance and can suppress increase in an evaporated gas by cooling the fuel tank when the heated outer air is supplied to the three way valve. |
