| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel vapor processing apparatus that can improve fuel vapor desorption efficiency and can reduce the residual amount or the blow-through amount of fuel vapor. <P>SOLUTION: The fuel vapor processing apparatus 10 includes: a casing 12 having a tank port 17, a purge port 18 and an atmospheric port 19 and having a first adsorption chamber 46 and a second adsorption chamber 48 adjoining to each other at least in a linear flow direction of a gas passage formed therein; and an adsorption material 50 filled in each of adsorption chambers 46, 48, 33. A spacing chamber 40 is formed between the first adsorption chamber 46 and the second adsorption chamber 48. The first adsorption chamber 46 is formed to have a passage cross-sectional area smaller than the passage cross-sectional area of the second adsorption chamber 48. The spacing chamber 40 includes a primary space part 57 having an equivalent passage cross-sectional area to that of the second adsorption chamber 48 and continuously extending from the adsorption chamber 48 to the first adsorption chamber 46. <P>COPYRIGHT: (C)2013,JPO&INPIT |
