Evaporated fuel adsorbing canister preventing diffusion of fuel

Details Evaporated fuel adsorbing canister preventing diffusion of fuel Evaporated fuel adsorbing canister preventing diffusion of fuel

1996-07-05

1998-04-28

Spitzer, Robert

Gas separation: apparatus

Solid sorbent apparatus

Plural solid sorbent beds

96130, 96131, 96144, 96152, 123519, B01D 5304

Patent

active

057439435

ABSTRACT:
A canister which can control the diffusion of evaporated fuel to surely prevent the evaporated fuel from blowing through into the atmosphere has a main chamber having therein a first adsorbent layer for adsorbing evaporated fuel and including an evaporated fuel lead-in port and a purge port, a subchamber having therein a second adsorbent layer for adsorbing evaporated fuel and including an atmospheric air lead-in port, and an air chamber communicating with the main chamber and the subchamber are provided in a casing of a canister. The air chamber is divided into three parts: a first chamber at the side of the main chamber, a second chamber at the side of the subchamber and a third chamber between the first and second chambers. A nonlinear communication passage is formed inside of the third chamber by dividing the third chamber with a partition wall having its both ends opened to the first chamber and the second chamber respectively. Since the communication passage can be sufficiently long, a canister with both diffusion prevention and low pressure loss can be obtained.

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