Canister for adsorbing evaporated fuel

Details Canister for adsorbing evaporated fuel Canister for adsorbing evaporated fuel

1992-08-05

1993-05-04

Nozick, Bernard

Gas separation

With separating media bypass or system gas pressure relief

Valved bypass means

55387, 123519, B01D 5000

Patent

active

052078086

ABSTRACT:
A canister for adsorption of evaporated fuel in an automobile. The canister operates to decrease leakage of the evaporated fuel when the atmosphere temperature rises or the canister is left as it is for a long time. To this end, the canister according to the invention comprises a first container provided in adjacent to an inlet for evaporated fuel and incorporating therein a liquid-phase component adsorbent, a second container provided on the downstream of the first container and on the side or the top of the first container and filled with an adsorbent, and a third container disposed between the second container and an atmosphere port and filled with an adsorbent. Further, the first, second and third container are integrally formed. With such structure, liquid-phase components of the evaporated fuel are collected by the adsorbent in the first container so that a life span of the adsorbent in the second container can be elongated. Further, since the third container is filled with the adsorbent, the evaporated fuel forcibly discharged from the adsorbent of the second container is collected by the adsorbent in the third container when the atmosphere temperature rises or the canister is left for a long time. Therefore, the evaporated fuel can be prevented from being discharged into the atmosphere.

REFERENCES:
patent: 4448594 (1984-05-01), Kozawa
patent: 4684382 (1987-08-01), Abu-Isa

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