| 摘要 |
<p>PROBLEM TO BE SOLVED: To increase a value of ratio L/D, where L is defined as the length of adsorbent layer and D is defined as the effective section diameter D, without making a size of a casing into a large-sized one.SOLUTION: A drain side cartridge 50 mounted within the second chamber 30 has a first sub-chamber 52 and a second sub-chamber 53 communicated with each other in U-shape through an elliptical base part 57 and containing honeycomb active carbon 51 therein. The first sub-chamber 52 is formed with a communicating port 60 at a small-diameter part 52b, and the first sub-chamber 52 and an intermediate cartridge 70 are communicated with each other through the communicating port 60 and a flow passage 32. The second sub-chamber 53 is communicated with a drain port 18 through an upper end opening part 62. Evaporated fuel from the intermediate cartridge 70 flows through the flow passage 32 into the first sub-chamber 52 from the communicating port 60 and then is adsorbed into the active carbon 51, further flows through the second sub-chamber 53 and is adsorbed into the active carbon 51. Finally, air is discharged into surrounding atmosphere through the opening part 62 and the drain port 18.</p> |
